Magnetocrystalline anisotropy in epitaxially grown (Gd,Tm,Y)3(Fe,Ga)5O12garnet thin films

摘要: Single‐crystal thin films of gallium‐substituted mixed garnets (Gd,Tm,Y)3(Fe,Ga)5O12, grown by liquid phase epitaxy, have been used as drive layer materials in contiguous disk bubble devices; a critical parameter for the selection specific composition is value magnetocrystalline anisotropy constant K1. We measured values K1 series epitaxial on (100) and (111) oriented gadolinium gallium garnet substrates. were both ferrimagnetic resonance with an inductive hysteresigraph, whereas only measurements employed films. The each composition, obtained different methods from orientations, agree reasonably well other are consistent what would be expected linear extrapolation K1’s pure rare‐earth iron after empirical correction substitution.