Applied Physics Letters · 2016 · 47 citations · 17 references
Natural SciencesMaterials EngineeringMaterials ScienceCrystal StructureMagnetic MaterialsThin FilmsFerromagnetic MaterialsFerromagnetismMagnetic CharacterizationMagnetic Properties Of SolidsMagnetic Thin FilmsMagnetism In SolidsEpitaxial Magnetic FilmsFerrite Thin FilmsFerromagnetic ResonanceMagnetic Materials CharacterizationMagnetic PropertiesMagnetization In Thin FilmsSaturationSaturation Magnetization
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.
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On the Theory of Ferromagnetic Resonance Absorption
C. Kittel · Physical Review · 1948 · 2.7K citations