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- W2090934577 abstract "We have measured the ferromagnetic resonance of three garnet films with the approximate composition ${R}_{2}mathrm{Eu}{mathrm{Fe}}_{4}{mathrm{O}}_{12}$, where $R=mathrm{Y}mathrm{or}mathrm{Lu}$ and $M=mathrm{Al}mathrm{or}mathrm{Ga}$, grown by liquid-phase epitaxy on 001 and {111} gadolinium gallium garnet substrates. The anisotropy has a growth-induced component which anneals out at 1250ifmmode^circelsetextdegreefi{}C. Measurements from $0.04{T}_{C}$ to $0.92{T}_{C}$ on a {111} film with ${T}_{C}=404 ifmmode^circelsetextdegreefi{}$K show that this component is proportional to the calculated uniaxial anisotropy of a ${mathrm{Eu}}^{3+}$ ion in garnet, up to $0.75{T}_{C}$. This proportionality is predicted by the site-preference theory of the growth-induced anisotropy. The calculation is based on the Wolf-Van Vleck model of europium iron garnet, extended to include spin-correlation effects on the $d$ sublattice in a heuristic manner. Anisotropic exchange is found to be the dominant source of the anisotropy. We find site preferences of about 20% in all three films. The calculation also accounts reasonably well for the temperature dependence of the magnetostriction of europium iron garnet." @default.
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- W2090934577 date "1973-02-01" @default.
- W2090934577 modified "2023-09-25" @default.
- W2090934577 title "Growth-Induced Magnetic Anisotropy of Epitaxial Films of Mixed Garnets Containing Europium" @default.
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- W2090934577 doi "https://doi.org/10.1103/physrevb.7.1070" @default.
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