Temperature stable magnetic bubble compositions

Details Temperature stable magnetic bubble compositions Temperature stable magnetic bubble compositions

1983-08-15

1985-05-28

Rutledge, L. Dewayne

Static information storage and retrieval

Magnetic bubbles

Magnetic storage material

252 6257, 252 6259, 252 6263, 428693, 428900, G11C 1908, C04B 3540

Patent

active

045204608

ABSTRACT:
Certain Tm-containing iron garnet compositions provide layers having desirably high values of Curie temperature and magnetic anisotropy and permit the fabrication of devices having 1.2 .mu.m diameter magnetic bubbles. The compositions, based on Tm-substitution on dodecahedral sites of [(La,Bi)(Sm,Eu),(Ca,Sr),R].sub.3 (Fe,Si,Ge).sub.5 O.sub.12, are grown by liquid phase epitaxy onto suitable substrates. Bubble devices that incorporate the layers find applications in high density information storage.

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S. L. Blank et al., J. Appl. Phys. 50, 2155, (1979), "Design and development of single-layer, ion-implantable small bubble materials for magnetic bubble devices".

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