Growth and magnetic behavior of bismuth substituted yttrium iron garnet nanoparticles
Source abstract
Abstract
Crystal growth and the magnetic properties of bismuth substituted yttrium iron garnet (Bi-YIG) nanoparticles were studied with particular focus on the bismuth composition dependence of the magnetic properties of the particles and the effects of annealing on the garnet phase formation. The Bi-YIG nanoparticles of 47–67 nm in size can be chemically synthesized when they are annealed at 650–850 °C. Both the lattice constant and the magnetization of the garnet nanoparticles linearly increase when the bismuth composition in the Bi-YIG particles increases. We have found that chemically synthesized nanoparticles transform from the amorphous to the garnet phase when annealed at temperatures below 650 °C, while the onset of magnetic moment of iron in the garnet nanoparticles is observed slightly above 650 °C. According to Mossbauer effect measurements, the hyperfine fields of 57Fe at the tetrahedral and octahedral sites in the garnet are 39 and 48 T, respectively.
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Research context
OpenAlex topics: Magneto-Optical Properties and Applications · Photonic Crystals and Applications · Photorefractive and Nonlinear Optics
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References (24)
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