Yttrium iron garnet (YIG) is a kind of synthetic garnet, with chemical composition Y3Fe2(FeO4)3, or Y3Fe5O12. It is a ferrimagnetic material[1] with a Curie temperature of 560 K.[2] YIG may also be known as yttrium ferrite garnet, or as iron yttrium oxide or yttrium iron oxide, the latter two names usually associated with powdered forms.[3]
In YIG, the five iron(III) ions occupy two octahedral and three tetrahedral sites, with the yttrium(III) ions coordinated by eight oxygen ions in an irregular cube. The iron ions in the two coordination sites exhibit different spins, resulting in magnetic behavior.[2] By substituting specific sites with rare-earth elements, for example, interesting magnetic properties can be obtained.[4]
^ abVladimir Cherepanov; Igor Kolokolov & Victor L'Vov (1993). "The Saga of YIG: Spectra, Thermodynamics, Interaction and Relaxation of Magnons in a Complex Magnet". Physics Reports. 229 (3): 84–144. Bibcode:1993PhR...229...81C. doi:10.1016/0370-1573(93)90107-o.
^Holm, U., Sohlstrom, H., & Brogardh, T. (1984). "YIG-Sensor Design for Fiber Optical Magnetic-Field Measurements". Proceedings of the Society of Photo-Optical Instrumentation Engineers, 514, 333–336.