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In this investigation, the incorporation of Gd3+ ions into ZMF-spinel ferrites through the citrate sol-gel auto-combustion method significantly modified their structural, magneto-optical, and gamma-ray attenuation properties. Doping levels were varied across samples labeled ZMF0 to ZMF4 with Gd3+ concentrations ranging from 0.000 to 0.100. Advanced characterization techniques such as XRD, SEM, TEM, FT-IR, Raman spectroscopy, and XPS, alongside UV-vis spectroscopy and VSM measurements, highlighted the profound impact of Gd3+ doping. Notably, the incorporation of Gd3+ led to nano-sized cubic structures with an optimized crystallite size of 19.82 nm in the ZMF4 sample, and a notable reduction in the band gap from 3.21 eV to 2.99 eV was observed, indicative of enhanced electronic properties. Magnetic analysis revealed a transition towards superparamagnetic behavior, with a decrease in coercivity and squareness ratios, suggesting applications in areas such as data storage and optical waveguides. Furthermore, the study leveraged FLUKA Monte Carlo simulations to assess the gamma-ray shielding efficiency of these materials. It was found that increasing Gd3+ concentration or sample thickness markedly improved radiation attenuation, highlighting the material's enhanced shielding capabilities against a range of photon energies. The most significant findings included the optimized sample (ZMF4) displaying superior magneto-optical characteristics and outstanding gamma-ray shielding performance, especially at higher Gd3+ levels. This investigation underlines the critical role of Gd3+ doping in advancing the functional properties of ZMF-spinel ferrites for technological and radiation protection applications, showcasing the potential of tailored nanomaterials in addressing complex challenges in material science. Highlights: Gd3+ ion doping in ZMF-spinel ferrites reduced crystallite sizes to an optimal 19.82 nm, significantly enhancing their magneto-optical properties. Spectral analysis showed a noticeable blue shift in band edge absorption, with optical band gaps narrowing from 3.21 eV to 2.99 eV, indicating improved electronic properties. Magnetic assessments revealed a transition to soft magnetic behavior and identified superparamagnetic regions, broadening potential technological applications. FLUKA Monte Carlo simulations demonstrated that increased Gd3+ concentration and sample thickness significantly boost the material's gamma-ray shielding efficiency. The study's comprehensive analysis establishes ZMF-spinel ferrites doped with Gd3+ ions as promising candidates for advanced applications, including radiation protection and energy systems. [ABSTRACT FROM AUTHOR]

Phosphors that exhibit tunable broadband emissions are highly desired in multi-functional LEDs, including pc-WLEDs and pc-NIR LEDs. In this work, broadband emissions were obtained and modulated in the unexpectedly wide spectral range of 517–609 nm for (Lu0.99−xGdxBi0.01)2WO6 phosphors by tuning the Gd3+ content (x = 0–0.99). The effects of Gd3+ doping on phase constituents, particle morphology, crystal structure, and photoluminescence were systematically investigated. Broadband green emission was obtained from Gd3+-free (Lu0.99Bi0.01)2WO6 phosphors (x = 0), whose emission intensity was enhanced by 50% with 5 at% Gd3+ (x = 0.05). The phase transition happened when x > 0.50 and the broadband red-NIR emission was obtained when x = 0.75–0.99. Three luminescence centers were proved to be responsible for the broadband green emissions via crystal structure, spectral fitting and fluorescence decay analysis. A pc-WLED with a high color rendering index (Ra = 91.3), a stable emission color, and a low color temperature (3951 K) was fabricated from the (Lu0.94Gd0.05Bi0.01)2WO6 broadband green phosphor, and an LED device that simultaneously emits high color rendering index white light and NIR light was obtained with the (Gd0.99Bi0.01)2WO6 broadband red-NIR phosphor. Night vision and noninvasive imaging were also demonstrated using the latter LED device. [ABSTRACT FROM AUTHOR]

In this study, the Gd3+-doped Ni–Zn–Co ferrite was prepared by the solid-phase method. The chemical formula is called Ni0.10Zn0.30Co0.60Fe2-xGdxO4. The doping amount x ranges from 0 to 0.1, and the doping amount change of each sample is 0.02. The (XRD) and FTIR results showed that the sample is a cubic spinel structure. The size of the lattice parameters ranged from (8.3790 ~ 8.4037)Å. It can be observed by the SEM the morphology of the sample is hexahedral structure, the EDS results showed that the prepared samples contained Ni, Zn, Co, Fe, Gd, and O elements. Besides this, the approximate equimolar ratios of the different elements are determined, which is consistent with the nominal composition of the proposed chemical formula of the compound. The M-H loop shows the soft magnetic properties of the sample, the (Ms) is between (77.56 ~ 92.78)emu/g and (Hc) is between (49.20 ~ 57.38)Oe, (Mr) is between (5.16 ~ 7.38) emu/g, and the trend of (Ms) and (Hc) values is approximate, indicating that the magnetism of the Ni–Zn–Co ferrite can be fine-tuned by tailoring their composition. [ABSTRACT FROM AUTHOR]

The present work focuses on developing Gd-doped Mn spinel nanoferrites and their potential application in the photodegradation of water pollutants. The impact of Gd3+ ion substitution on structural, electronic, and magnetic characteristics of manganese ferrites has been studied. Nanocrystalline samples of MnGdxFe2-xO4 (x = 0.0 to 0.10, in step size of 0.02) ferrites were prepared via sol–gel self-ignition route. The Rietveld, XPS, HRTEM, and SAED characterization methods confirmed the formation of phase pure ferrite nanoparticles (~ 8–22 nm) in the cubic spinel structure. The Gd3+ content in these nanoferrites responded to a systematic reduction in the size of nanocrystallites and an upsurge in the density of nanoferrites. The XPS study revealed fine assimilation of constituent elements in the fcc lattice and ruled out impurities in the nanoferrites. The Fe and the Gd ions were found to be in Fe3+ and Gd3+ states, respectively. While a major fraction of the Mn ions were found to be in the Mn2+ state, a small fraction of Mn4+ ions was observed on the surface of nanoparticles. The nanoferrites were found to exhibit a soft ferromagnetic state from 300 to 20 K limits. The highest saturation magnetization was observed for x = 0.02 (MS = 66.6 emu/g at 20 K). The observed magnetic properties can be understood with the competing (Fe3+ and Mn2+)A–O2−–[Fe3+, Mn2+, and Gd3+]B superexchange interactions and magnetocrystalline anisotropy. Due to the small band gap energy of Gd-doped Mn ferrites than that of the pure Mn ferrite, they have demonstrated excellent photocatalytic activity for the degradation of methylene blue (MB) dye under visible light illumination. As much as 96.35% of the MB dye was found to get degraded in 70 min of light illumination over synthesized nanoparticles and the photodegradation reaction followed pseudo-first-order kinetics. The increased optical absorbance due to lower band gap, suppressed recombination rate of charge carriers, and enhanced charge mobility make them effective visible light active photocatalysts. This study revealed that the electronic, optical, and magnetic properties of MnFe2O4 nanoferrites could be easily tuned by varying the Gd3+ content and the prepared Gd-doped MnFe2O4 nanomaterials have boundless potential to be utilized in the future making promising active photocatalysts and degradation of harmful industrial dyes for enhanced protection in the fields of environment and health care. [ABSTRACT FROM AUTHOR]

A series of Si4+ or Gd3+ doped KBa0.9BP2O8:0.1Eu3+ phosphors emitting orangish-red light were successfully synthesized via a conventional high-temperature solid-state method in air atmosphere. The crystal structure and luminescence properties of the phosphors were characterized. The effects of calcination temperature and different ions (Si4+ or Gd3+) co-doping amount on the crystal structure and spectra properties of the phosphors were investigated. The excitation spectra includes a series of spikes in 310–500 nm with the maximum excitation peak of wavelength at 394 nm that matches with the near ultraviolet (UV) LED chips. Under the near UV excitation at 394 nm, the maximum and the sub-strong emission peak appears orange light at 594 nm and red light at 614 nm, which belongs to 5D0 → 7F1 and 5D0 → 7F2 transition of Eu3+, respectively. The results indicate Si4+ or Gd3+ have no obvious influence on the emission peak positions of phosphors, but leads to the change of R/O value. Furthermore, doping Si4+ or Gd3+ both can enhance the luminous intensity of phosphors. [ABSTRACT FROM AUTHOR]

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We present a systematic study on the properties of Na(Y,Gd)F4-based upconverting nanoparticles (UCNP) doped with 18% Yb3+, 2% Tm3+, and the influence of Gd3+ (10–50 mol% Gd3+). UCNP were synthesized via the solvothermal method and had a range of diameters within 13 and 50 nm. Structural and photophysical changes were monitored for the UCNP samples after a 24-month incubation period in dry phase and further redispersion. Structural characterization was performed by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) as well as dynamic light scattering (DLS), and the upconversion luminescence (UCL) studies were executed at various temperatures (from 4 to 295 K) using time-resolved and steady-state spectroscopy. An increase in the hexagonal lattice phase with the increase of Gd3+ content was found, although the cubic phase was prevalent in most samples. The Tm3+-luminescence intensity as well as the Tm3+-luminescence decay times peaked at the Gd3+ concentration of 30 mol%. Although the general upconverting luminescence properties of the nanoparticles were preserved, the 24-month incubation period lead to irreversible agglomeration of the UCNP and changes in luminescence band ratios and lifetimes. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this study, we successfully synthesized Ce3+-activated gadolinium aluminum garnet phosphors using the sol–gel method, incorporating various Gd3+ substitution levels denoted by the chemical formula (Y0.98−xGdx)3Al5O12:Ce: 0.06 (x = 0, 0.2, 0.4, 0.6). This study allowed us to discern the impact of Gd3+ substitution on garnet phase stability, crystallographic parameters, morphology, and luminescence properties. X-ray diffraction analysis revealed the pronounced sensitivity of the garnet phase to variations in Gd3+ content. Notably, discernible alterations were observed in both the reduction and shift of diffraction peaks, directly correlating with the percentage of Gd3+ doping. X-ray photoelectron spectroscopy revealed distinct core-level photoelectron and Auger transition peaks for yttrium, oxygen, aluminum, and gadolinium (Gd 3d, Gd 4d). Trace amounts of cerium were confirmed by the Ce 3d photoelectron peaks in both spectra, indicating the successful incorporation of the Ce dopant in the materials. Atomic force microscopy revealed that the incorporation of Gd resulted in significant changes, especially in granular formation. Field-emission scanning electron microscopy (FE-SEM) micrographs demonstrated the formation of agglomerated particles alongside a broad and asymmetrical particle size distribution. The particles exhibited an irregular morphology devoid of pores. Photoluminescence analysis revealed the distinctive yellow emission of Ce3+-doped YAG phosphors, attributed to the 5d–4f transition of the Ce3+ ion. Notably, an observed decrease in emission intensity was associated with an increase in Gd3+ content. [ABSTRACT FROM AUTHOR]

In this work, Gadolinium (Gd3+) substituted Co–Cu–Cr (CCC) SFs with the chemical formula Co 0.5 Cu 0.5 Cr 0.5 Gd x Fe 1.5-x O 4 (x = 0.00, 0.05, 0.10, 0.15, and 0.20) were synthesized via the self-combustion process. The single-phase matrix of the Gd3+ substituted CCC SFs was verified using X-ray diffraction (XRD). The crystallite size (D) of Gd3+ doped CCC SFs was reduced from 51.20 nm to 36.27 nm with increasing Gd3+ doping. The addition of Gd3+ in the CCC SFs lattice enhanced specific surface area (S) from 22.11 cm2/g to 28.57 cm2/g. The energy bandgap (E g) was increased from 4.83 eV to 5.40 eV and revealed an inverse relation with crystallite size. The tangent loss (tan δ), dielectric loss (ε ″), dielectric constant (ε ′), and ac conductivity (σ a c ) of Gd3+ doped CCC SFs exhibit frequency-dependent behaviour. The behaviour of these dielectric properties has been analyzed using both Koop's theory and the Maxwell-Wagner model. Moreover, it was found that the ε ′ was enhanced, while σ a c and tan δ w as reduced with the doping of Gd3+ in CCC SFs. The saturation magnetization and microwave operating frequency were increased with the doping of Gd3+ in CCC SFs. Because of their diverse dielectric and magnetic properties, the Gd3+ doped CCC SFs have considerable potential for different applications, including microwave absorption materials, switching high-frequency devices, and microwave frequency-operating devices. [ABSTRACT FROM AUTHOR]

The use of upconversion (UC) materials is an effective strategy for harvesting the near-infrared (NIR) solar photons in perovskite solar cells. Hexagonal β-NaLuF4:Yb,Er submicron prisms were synthesized by a facile solvothermal method. Gd3+ doping is used to enhance the UC emission intensity. We investigated how the concentration of Gd3+ ions affected the morphological evolution, microstructure, and luminescence performance of NaLuF4:Yb,Er and explored the mechanism for improving luminescence at 980 nm excitation. By incorporating the optimized NaLuF4:Yb,Er,Gd into the perovskite solar cells' (PSCs) hole transport layer, the short-circuit density (Jsc) of UC-PSCs can be enhanced from 19.31 to 21.77 mA cm−2. [ABSTRACT FROM AUTHOR]

Copyright of Journal of the Chinese Society of Rare Earths is the property of Editorial Department of Journal of the Chinese Society of Rare Earths and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The study shows that the addition of gadolinium ions has a significant impact on the structure, morphology, and adsorption properties of Ni-Co spinel ferrite that was synthesized by the sol–gel auto-combustion method. The research also indicates that the higher the Gd content, the greater the increase in the lattice parameter, which suggests that Gd3+ ions uniformly replaced the octahedral Fe3+ ions. The morphology and chemical composition of Gd-doped Ni-Co ferrites have been studied using SEM and EDS. Gd adding to the NiCoFe matrix increases the BET surface area by 50% (from 48 to 72 m2/g) and promotes the formation of mesopores with an average radius from 3.9 to 4.9 nm. The pHPZC values of Gd-doped ferrites are in the range of 7.22–7.39, which means that the ferrite surface will acquire a positive charge at natural pH, so this will promote the adsorption of Congo red anionic dye through electrostatic interaction forces. Langmuir, Freundlich, and Dubinin-Radushkevich models were used to explain the mechanism of CR adsorption on the Ni0.5Co0.5GdxFe2-xO4 adsorbent surface. The ionic-covalent parameter has been estimated to describe the surface acid–base properties. Overall, this study highlights the potential of Gd3+ doping as a promising approach for enhancing the adsorption properties of nickel–cobalt ferrites. [ABSTRACT FROM AUTHOR]

To realize the high-brightness of yellow light-emitting diodes (LEDs), the yellow-emitting phosphor ceramics with high luminous efficiency (LE) are urgently explored. Based on the idea of spectrum regulation, the Lu 3 -x-y Gd y Al 5 O 12 : x Ce3+ (LuGdAG:Ce) phosphor ceramics were prepared via vacuum solid-state sintering. The effect of Gd3+ and Ce3+ content on the structure, luminescence and thermal properties of LuAG:Ce ceramics were investigated. The distortion ratio (D) of CeO 8 and bandgap were effectively modified via Gd3+ doping, resulting in massive red-shifting of Ce3+ emission (513→561 nm). The LEDs lighting encapsulated by LuGdAG:Ce ceramics changes from green to yellow. Importantly, the yellow LEDs with a LE up to 139.0 lm/W@180 W and a warm correlated color temperature (CCT) of 3620 K were achieved based ceramic Ce07Gd9. The LuGdAG:Ce phosphor ceramic has the best of luminescence performance in phosphor-converted yellow LEDs lighting so far, which is considered to be the highly promising color converter. [ABSTRACT FROM AUTHOR]

Re3+ ions (Re = Y, La, Gd)-doped MSi2O2N2:Eu2+ (M = Ca, Sr) phosphors were prepared by the solid-state reaction method. The effects of co-dopants (Y3+, La3+, Gd3+) and Eu2+ doping concentration on the luminescent performance of MSi2O2N2:Eu2+ have been investigated. The co-doping with Re3+ (Re = Y, La, Gd) significantly improved the luminescent performance of MSi2O2N2:Eu2+ (M = Ca, Sr) overall. Re3+ co-doping had a greater enhancing effect on higher Eu2+ concentration samples and the Re3+-doped CaSi2O2N2:Eu2+ phosphors exhibited better luminescence properties than Re3+-doped SrSi2O2N2:Eu2+ ones. In addition, incorporation of Y3+ ions to SrSi2O2N2:Eu2+ showed the strongest emission among the three dopants (Y3+, La3+, and Gd3+), while the Gd3+ doping ions in CaSi2O2N2:Eu2+ exhibited superior luminescence properties compared to Y3+ and La3+. [ABSTRACT FROM AUTHOR]

Zn-Cu-Co ferrite was synthesized by sol–gel method, in which Gd3+ was gradually doped instead of Fe3+, with the chemical formula Zn0.1Cu0.1Co0.8Fe2-xGdxO4 (0 ≤ x ≤ 0.1, in steps of 0.025). XRD, FTIR, SEM, EDS, VSM, and UV–Vis were used to investigate the crystal structure, morphology, and magnetic properties of the synthesized ferrite materials. The phase of the material was found to be a cubic spinel phase with a small amount of GdFeO3. The particles of the material showed a cubic shape structure and Gd3+ was successfully doped into the ferrite. The magnetization of the material decreases with increasing Gd3+ doping, and the coercivity first decreases and then increases, with the maximum coercivity Hc = 261.361Oe when Gd3+ is doped with 0.025. The lower perpendicularity indicates that the material is more suitable for high-frequency components, and the material has the properties of the semiconductor. [ABSTRACT FROM AUTHOR]

Copyright of Journal of the Chinese Society of Rare Earths is the property of Editorial Department of Journal of the Chinese Society of Rare Earths and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Antiferroelectric materials play an important role in dielectric energy storage because of their unique phase transition characteristics, high saturated polarization, and almost zero remanent polarization. However, their low energy storage capacity limits their applications. Here, an integrated strategy for enhancing energy storage density by using the designed composition of antiferroelectric materials is proposed. By doping Pb(Zr0.87Sn0.12Ti0.01)O3 with a new dopant Gd3+, a high recoverable energy storage density of 12.0 J cm−3 at 447 kV cm−1 was achieved, along with a moderate energy storage efficiency of 78%. This result is obtained by co-optimising the breakdown strength and phase-switching the electric field together with the maximum polarization. The enhanced breakdown strength is a result of the grain refinement (as found through simulation by finite element analysis) and an increased band gap. By adjusting the tolerance factor, the antiferroelectric phase was stabilized, which in turn improved the phase-switching field. Finally, the polarization was strengthened from sample Gd0 to Gd2, as the breakdown strength was increased, and there were fewer oxygen vacancies to hinder domain switching, which were caused by increasing cation vacancies due to Gd3+ doping. Moreover, excellent temperature stability in the 30–100 °C range and good fatigue behaviour up to 12 000 cycles were obtained, along with a high discharge energy density of 8.2 J cm−3. Because of these characteristics, the (Pb0.97Gd0.02)(Zr0.87Sn0.12Ti0.01)O3 ceramic is a promising candidate for high-performance pulsed-power capacitor applications. [ABSTRACT FROM AUTHOR]

• The carbon coating and Gd3+-doping were simultaneously applied to promote the electrical conductivity of NaTi 2 (PO 4) 3 via a simple sol-gel approach. • The electronic conductivity of NaTi 2 (PO 4) 3 anode was greatly improved by the carbon coating and Gd3+-doping. • The Gd3+-doped NaTi 2−x Gd x (PO 4) 3 @C nanocomposites presented superior high-rate capabilities for sodium energy storage. [Display omitted] The pristine NaTi 2 (PO 4) 3 negative electrode material has a poor electrical conductivity, which significantly inhibits its application in sodium-ion batteries. Herein, carbon coating and Gd3+ doping are simultaneously applied to promote the electrical conductivity of NaTi 2 (PO 4) 3 through a simple sol-gel approach. The conductive carbon coating promotes apparent conductivity, while Gd3+-doping effectively improves intrinsic conductivity. Therefore, the resulting Gd3+-doped NaTi 2−x Gd x (PO 4) 3 @C (x=1%, 3%, 5%, 7%) composites display superior high-rate capabilities for sodium energy storage. A typical obtained NaTi 1.95 Gd 0.05 (PO 4) 3 @C anode presents high capacities of 105.9 and 93.1 mAh g−1 at 5 and 10 C, respectively. Furthermore, this anode shows a high capacity retention ratio of 95.2% at 20 C over 500 cycles. These results suggest that this carbon coating and doping strategy is highly effective and can be adopted to enhance the battery properties of other electrode materials. [ABSTRACT FROM AUTHOR]

This work’s main purpose is to investigate the effect of Gd3+ substitution on the structural, cation distribution, morphological, and magnetic characteristics of cobalt ferrite nanostructures. The nanostructures were synthesized through the sol-gel auto combustion technique. X-ray diffraction (XRD) analysis with the Rietveld refinement through the Material Analysis Using Diffraction (MAUD) program confirmed a single-phase spinel structure for lower contents of Gd3+. However, for higher concentrations, a trace of second phase GdFeO3 was evident. The crystallite size reduction from 17 to 11 nm with Gd3+ doping confirmed the formation of nanocrystalline Coâ€"Gd ferrite. Cation distribution was another parameter inferred from the experimental data of XRD analyzed by the MAUD program. Fourier-transform infrared spectra confirmed the formation of spinel structure through two prominent vibrational modes observed at the desired wavelength range. FESEM analysis confirmed the data obtained from the XRD about the structure and morphology of the nano samples. Saturation magnetization (M S) of the nano samples evaluated at 10 K showed a decreasing behavior from 94 to 86 emu gâˆ'1 by Gd3+ doping, while a fluctuating trend of M S was observed at room temperature. Coercive field (H C) evaluated at 10 K reached a maximum value of about 1145 kA mâˆ'1 for the sample CoFe1.96Gd0.04O4, and then it decreased. At the same time, H C experienced no considerable change at 300 K. The possible concepts attributed to such a trend of H C were also investigated. Overall, the significant impact of Gd3+ doping on the cobalt ferrite nanoparticles causes Gdâ€"Co ferrite to have a desirable capacity of permanent magnet materials and storage of information with high density. As a result, this ferrite may be a proper candidate to be utilized, especially at lower temperatures. [ABSTRACT FROM AUTHOR]

Quercetin (Qu), a potential bioflavonoid has gained considerable interest as a promising chemotherapeutic drug which can inhibit the proliferation of triple-negative breast cancer (TNBC) cells due to its regulation of the expression of tumor-suppressor gene metastasis and antioxidant property. Notably, Qu exhibits a very negligible cytotoxic effect on normal cells, even with high-dose treatment, while it is shows high affinity to TNBC. However, the efficiency of Qu is limited clinically due to its poor bioavailability, caused by its low aqueous solubility (2.15 μg mL−1 at 25 °C), rapid gastrointestinal digestion and chemical instability in alkaline and neutral media. Herein, polydopamine (PDA)-coated, NH2–PEG–NH2 and hyaluronic acid (HA)-functionalized Gd3+-doped Prussian blue nanocubes (GPBNC) are reported as a multifunctional platform for the codelivery of Qu as a chemotherapeutic agent and GPBNC as a photodynamic (PDT) and photothermal (PTT) agent with improved therapeutic efficiency to overcome theses barriers. PDA, NH2–PEG–NH2 and HA stabilize GPBNC@Qu and facilitate bioavailability and active-targeting, while absorption of near infrared (NIR) (808 nm; 1 W cm−2) induces PDT and PTT activities and dual T1–T2-weighted magnetic resonance imaging (MRI) with high relaxometric parameters (r1 10.06 mM−1 s−1 and r2 24.96 mM−1 s−1 at a magnetic field of 3 T). The designed platform shows a pH-responsive Qu release profile and NIR-induced therapeutic efficiency of ∼79% in 20 minutes of irradiation, wherein N-terminal gardermin D (N-GSDMD) and a P2X7-receptor-mediated pyroptosis pathway induces cell death, corroborating the up-regulation of NLRP3, caspase-1, caspase-5, N-GSDMD, IL-1β, cleaved Pannexin-1 and P2X7 proteins. More interestingly, the increasing relaxivity values of Prussian blue nanocubes with Gd3+ doping have been explained on the basis of Solomon–Bloembergen–Morgan theory, considering inner- and outer-sphere relaxivity, wherein crystal defects, coordinated water molecules, tumbling rate, metal to water proton distance, correlation time, magnetisation value etc. play a significant role. In summary, our study suggests that GPBNC could be a beneficial nanocarrier for theranostic purposes against TNBC, while our conceptual study clearly demonstrates the role of various factors in increasing relaxometric parameters. [ABSTRACT FROM AUTHOR]