Magnetic bubble layer of thulium-containing garnet

Details Magnetic bubble layer of thulium-containing garnet Magnetic bubble layer of thulium-containing garnet

1982-04-12

1984-02-21

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of inorganic material

156DIG63, 252 6257, 365 33, 428692, 428700, 428702, 428900, G11C 1102, C04B 3550

Patent

active

044330340

ABSTRACT:
Certain Tm-containing iron garnet compositions provide layers having desirably low values of temperature coefficient of bubble collapse field and permit the fabrication of 1.2 .mu.m diameter magnetic bubble devices. The compositions, based on Tm-substitution on dodecahedral sites of [(La,Bi),(Sm,Eu),R].sub.3 (Fe,Al,Ga).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.

REFERENCES:
patent: 4001793 (1977-01-01), Henry
patent: 4138530 (1979-02-01), Breed
patent: 4139905 (1979-02-01), Blank
patent: 4169189 (1979-09-01), Stacey
patent: 4183999 (1980-01-01), Ota
patent: 4263374 (1981-04-01), Glass
patent: 4355072 (1982-10-01), Mateika

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