Temperature dependence of anisotropy field in Co-Ti substituted Ba-ferrite particles

Author

Kishimoto, Mikio ; Kitahata, Shin-ichi

Author_Institution

Hitachi Maxwell Ltd., Kyoto, Japan

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

4063

Lastpage

4065

Abstract

Co-Ti substituted Ba-ferrite particles were prepared, and the crystalline and shape anisotropy energies were measured in the temperature range of 78 K to 400 K to determine the crystalline anisotropy field of the particles. The crystalline anisotropy energy and the crystalline anisotropy field at room temperature were about 0.67×10⁶ erg/cm³ and about 4700 Oe, respectively. A similar temperature dependence was observed between the effective anisotropy field and the coercivity. This and a high intrinsic coercivity indicate coherent rotation of the magnetic moment in single-domain particles

Keywords

barium compounds; cobalt compounds; coercive force; ferrites; magnetic anisotropy; magnetic properties of fine particles; titanium compounds; 78 to 400 K; BaCo_0.8Ti_0.8Fe_10.4O₁₉; coercivity; coherent rotation; crystalline anisotropy energy; crystalline anisotropy field; ferrite; magnetic moment; shape anisotropy energies; single-domain particles; temperature dependence; Anisotropic magnetoresistance; Coercive force; Crystallization; Energy measurement; Magnetic field measurement; Particle measurements; Shape measurement; Temperature dependence; Temperature distribution; Temperature measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42523

Filename

42523