Presentation Information
[10p-PB3-25]Dependence of the Magnetic Domain Structure on Crystallinity and Substituent Elements
in Yttrium Iron Garnet single crystals
〇Tsuyoshi Sato1, Xiaoxi Liu2 (1.Carlit Co., Ltd., 2.Shinshu Univ.)
Keywords:
YIG,Y3Fe5O12,Yttrium Iron Garnet
Yttrium iron garnet (Y3Fe5O12, YIG) is a valuable magneto-optical material and also plays an important role in magnonics and quantum information processing. In YIG, Fe3+ ions occupy both tetrahedral and octahedral sites, and strong antiferromagnetic superexchange between these sublattices leads to ferrimagnetic ordering. Because substituting specific lattice sites with other elements enables tuning of magnon properties, precise control of crystal defects and crystallographic orientation is essential for device applications. In this study, we developed a dedicated polarized-light microscope to observe magnetic domain structures in YIG single crystals. Using this system, we evaluated the relationship between domain patterns, crystal quality, and the effects of elemental substitution.