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2. Exceptionally high magnetization of stoichiometric Y3Fe5O12 epitaxial films grown on Gd3Ga5O12.

Author

Gallagher, James C., Yang, Angela S., Brangham, Jack T., Esser, Bryan D., White, Shane P., Page, Michael R., Keng-Yuan Meng, Sisheng Yu, Adur, Rohan, Ruane, William, Dunsiger, Sarah R., McComb, David W., Fengyuan Yang, and Hammel, P. Chris

Subjects
MAGNETIZATION, FERROMAGNETIC resonance, CRYSTALLINE polymers, STOICHIOMETRY, MAGNETIC insulators
Abstract

The saturation magnetization of Y3Fe5O12 (YIG) epitaxial films 4 to 250 nm in thickness has been determined by complementary measurements including the angular and frequency dependencies of the ferromagnetic resonance fields as well as magnetometry measurements. The YIG films exhibit state-of-the-art crystalline quality, proper stoichiometry, and pure Fe3+ valence state. The values of YIG magnetization obtained from all the techniques significantly exceed previously reported values for single crystal YIG and the theoretical maximum. This enhancement of magnetization, not attributable to off-stoichiometry or other defects in YIG, opens opportunities for tuning magnetic properties in epitaxial films of magnetic insulators. [ABSTRACT FROM AUTHOR]

Published
2016
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