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Magnetooptic garnet-ferrite films with high-speed response and thermostability

V.V. Randoshkin, A.M. Galkin, Yu.A. Durasova, V.A. Polezhaev, Yu.N. Sazhin, N.N. Sysoev

Moscow University Physics Bulletin 2002. 57. N 5. P. 73

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Annotation

We have studied the effect of temperature on the relationship between the domain wall (DW) velocity $V$ and the active magnetic field strength $H$ in (Bi,Eu)$_3$(Fe,Ga)$_5$O$_{12}$ single-crystal garnet-ferrite films grown by the liquid-phase epitaxy technique from a supercooled solution-melt on (Gd,Ca)$_3$(Mg,Zr,Ga)$_5$O$_{12}$ substrates of different orientation. These films are shown to have a DW velocity of $V>1$ km/s near the moment of momentum compensation point, this rate changing by 34% at $H=200$ Oe in the temperature range $T=25$-$100$$^о$C under study in the case of (110) orientation where orthorhombic magnetic anisotropy is induced.

Authors
V.V. Randoshkin, A.M. Galkin, Yu.A. Durasova, V.A. Polezhaev, Yu.N. Sazhin, N.N. Sysoev
Hydrophysical Research Center, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
Issue 5, 2002

Moscow University Physics Bulletin

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