Crystallographic and magnetic investigation on W-type-hexaferrite single crystals in the solid solution series SrZn2-xCoxFe16O27

Author

Graetsch, Heribert ; Haberey, Florian ; Leckebusch, Rudolf ; Rosenberg, Mihai S. ; Sahl, Kurt

Author_Institution

Ruhr-Universität Bouchum, Bouchum, West Germany

Volume

20

Issue

3

fYear

1984

fDate

5/1/1984 12:00:00 AM

Firstpage

495

Lastpage

500

Abstract

The saturation magnetization and the magnetocrystalline anisotropy were measured on single crystals in the solid solution series SrZn2-xCoxFe16O27(SrZn2-xCox-W) at 298 K and 6 K. Lattice constants and Curie-temperatures are also given as a function of the composition. The magnetocrystalline anisotropy changes from uniaxial to planar dependent on temperature and cobalt substitution at $x \\approx 0.5$ for 6 K and $x \\approx 0.85$ for 298 K. The six-fold anisotropy in the basal plane of the planar W-hexaferrites increases strongly with increasing cobalt content. Crystals with a low Co substitution (x = 0.33 and 0.67) have an anomalous discontinuity in their hard direction magnetization curves; indicating a first-order magnetization process.

Keywords

Ferrite materials/devices; Anisotropic magnetoresistance; Cobalt; Crystallography; Crystals; Iron; Lattices; Magnetic anisotropy; Perpendicular magnetic anisotropy; Saturation magnetization; Solids;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1984.1063119

Filename

1063119