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This study presents a planar hybrid system consisting of an electric-field-coupled resonator (ELCR) and yttrium iron garnet (YIG) film, designed to investigate the interaction between photons and magnons at room temperature. This hybrid system has been designed and simulated using the commercial electromagnetic full-wave simulator CST Microwave Studio. The phenomenon of anti-crossing between the photon mode of the ELCR and the magnon modes of the YIG was observed by analyzing the |S21|-versus-frequency spectrum under varying strengths of bias magnetic fields. We present a comprehensive theoretical framework that explains the observed anti-crossing effect resulting from photon-magnon coupling (PMC) and provide estimations for the strength of PMC (Δ). Additionally, the interaction between photons and magnons was manipulated through two distinct methods: by adjusting the thickness (tYIG) of the YIG film and by positioning the YIG films along the microstripline. For the ELCR (for tYIG= 25 μm), Δ comes to 58 MHz, while changing tYIGfrom 2 μm to 50 μm, enabling more precise control of the Δ parameter across the span of 17 MHz to 84 MHz. Similarly, the YIG positioning at a different location along the microstripline allowed manipulation of Δ from 5 to 50 MHz. The resultant PMC can be significantly tuned by 400% to 900% in a planar-geometry ELCR-YIG hybrid system. This research offers avenues for developing innovative hybrid systems that afford greater control over the magnitude of PMC in a planar configuration, representing a promising direction for future advancements in hybrid magnonic systems.

Aluminum-doped magnesium ferrite (MAFO) has garnered significant interest due to its recently observed low microwave loss properties, making it invaluable for applications at high-frequency operations, including fields like spintronics and magnonics. This study delves into the optical and dielectric properties of MgAl0.5Fe1.5O4synthesized via a conventional solid-state method followed by sintering at 1350 °C for 6 hours. The X-ray diffraction analysis confirmed the formation of pure, single-phase MAFO spinel ferrite with the lattice constant of 8.313 Å. The Williamson–Hall (W-H) method was employed to determine the crystallite size and strain from X-ray diffraction data, resulting in values of 115.4 nm and 9.37 × 10-4, respectively. UV–visible spectroscopy was used to determine the optical properties, revealing a band gap of 2.38 eV and an average refractive index of 2.09 for the investigated spinel ferrite. The dielectric properties including capacitance, dielectric constant (ε), dielectric loss, ac conductivity, complex impedance, and modulus of MAFO sample were studied as a function of frequency for various temperatures. This comprehensive analysis sheds light on the previously undiscovered traits in the material's transport phenomena and optical attributes, opening an exciting and active field of research into its other physical properties.

Knowledge and awareness regarding oral health problems of tuberculosis patients are lacking among patients, physicians, as well as dental practitioners.

Numerous studies have demonstrated that mass media platforms are playing a crucial role in disseminating information about the COVID-19 pandemic. As media coverage of pandemic using frightening language has been speculated to induce emotional disturbances in people and fluctuations in their resilience level, this study was performed to explore the effect of COVID-19 related news on individual's emotions and resilience. It was hypothesized that altering the type of news would produce varying levels of emotions and resilience in participants. Both the recruitment of participants and the conduction of the study were done online in September when the pandemic hit the peak in India. Randomly assigned participants were exposed to three conditions: positive news ( N  = 56), negative news ( N  = 59), and neutral news ( N  = 60) related to COVID-19. Analyses revealed negative news significantly decreased positive emotions and resilience while positive news significantly reduced negative emotions and vice-versa. These finding suggest strong impact of mass media on individual's emotions and their own self-evaluation on resilience. The study highlights the responsibility of mass media and urges for bringing necessary changes in covering pandemic news and similar other uncertain situations in keeping people's emotions stable and increasing their psychological resilience., Competing Interests: No potential conflict of interest was declared by the authors., (© 2021 Elsevier Ltd. All rights reserved.)