Magnetic hexagonal ferrite layer on a nonmagnetic hexagonal mixe

Details Magnetic hexagonal ferrite layer on a nonmagnetic hexagonal mixe Magnetic hexagonal ferrite layer on a nonmagnetic hexagonal mixe

1982-07-06

1984-01-31

Bell, Mark

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

423593, 423594, 423596, 423598, 423599, 501136, 501137, 501138, C04B 3546, C04B 3548, C01F 1102, C01G 1500

Patent

active

044290527

ABSTRACT:
With the fabrication of a substrate material in the form of alkaline-earth gallate single crystals it has become possible to grow monocrystalline barium hexaferrite layers of high quality. These thin barium hexaferrite layers on the alkaline-earth gallate substrates are extremely suited as magnetic devices because of their very high uniaxial anisotropy and their small line width. Such magnetic devices can be used for passive microwave components, e.g. as resonance isolators or filters in the centimeter wavelength range or as components in information storage technology, e.g. in magnetic cylindrical domain devices, especially in the field of very small (submicron) cylindrical domains.

REFERENCES:
patent: 4323618 (1982-04-01), Damen et al.
patent: 4379853 (1983-04-01), Mateika et al.
Mat. Res. Bull. vol. 10, pp. 1255-1258 (1975).
Russian Journal of Inorganic Chemistry, vol. 21, (6), 1976 pp. 903-904, Journal of App. Phys. vol. 49, No. 3, pp. 1578-1580 (1978).
Russian Journal of Inorganic Chemistry, vol. 20, (7) 1975 pp. 1098-1100.
Journal of Crystal Growth, vol. 17, pp. 302-211 (1972) by S. L. Blank, J. W. Nielsen.
"Berichte den Deutschen Keramische Gesellschaft" vol. 54, No. 11, pp. 373-378 (1977).
Proc-IEEE, vol. 63, No. 8, pp. 1176-1195 (1975) A. H. Bobeck et al.

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