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Nonlinear optical and magnetic properties of BiFeO3 harmonic nanoparticles
- Source :
- Journal of Applied Physics, Journal of Applied Physics, American Institute of Physics, 2014, 116 (11), pp.114306. ⟨10.1063/1.4895836⟩, Journal of Applied Physics, Vol. 116, No 11 (2014) P. 114306
- Publication Year :
- 2014
- Publisher :
- HAL CCSD, 2014.
-
Abstract
- Second Harmonic Generation (SHG) from BiFeO3 nanocrystals is investigated for the first time to determine their potential as biomarkers for multiphoton imaging. Nanocrystals are produced by an auto-combustion method with 2-amino-2-hydroxymethyl-propane-1,3-diol as a fuel. Stable colloidal suspensions with mean particle diameters in the range 100–120 nm are then obtained after wet-milling and sonication steps. SHG properties are determined using two complementary experimental techniques, Hyper Rayleigh Scattering and nonlinear polarization microscopy. BiFeO3 shows a very high second harmonic efficiency with an averaged hdi coefficient of 79612 pm/V. From the nonlinear polarization response of individual nanocrystals, relative values of the independent dij coefficients are also determined and compared with recent theoretical and experimental studies. Additionally, the particles show a moderate magnetic response, which is attributed to gamma-Fe2O3 impurities. A combination of high nonlinear optical efficiency and magnetic response within the same particle is of great interest for future bio-imaging and diagnostic applications.
- Subjects :
- [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Materials science
[PHYS.PHYS]Physics [physics]/Physics [physics]
Analytical chemistry
General Physics and Astronomy
Nanoparticle
Nonlinear optics
Second-harmonic generation
ddc:500.2
Magnetic hysteresis
Molecular physics
symbols.namesake
Microscopy
Harmonic
symbols
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Particle
Rayleigh scattering
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- Language :
- English
- ISSN :
- 00218979 and 10897550
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics, Journal of Applied Physics, American Institute of Physics, 2014, 116 (11), pp.114306. ⟨10.1063/1.4895836⟩, Journal of Applied Physics, Vol. 116, No 11 (2014) P. 114306
- Accession number :
- edsair.doi.dedup.....50497d45ebf47892aaa38e12dcc541df