Epitaxial growth of NiZn ferrite on barium ferrite particles

Author

Jung, Hong-Sik ; Hong, Yang-Ki

Author_Institution

Dept. of Metall. Eng., Idaho Univ., Moscow, ID, USA

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1675

Lastpage

1677

Abstract

Homogeneous (Ni_0.5Zn_0.5)_xFe_3-xO₄ epitaxial layers were grown on Co-Ni-Ti-Sn substituted barium ferrite (BaFe) by aging neutral suspensions at 95°C under N₂ atmosphere. In all compositions the coercivity (H_c) increased remarkably within 10 minutes, followed by a slow decay for x⩽0.6. No change in full width half maximum (ΔH) of dM/dH versus H curve with reaction time was observed for x⩾0.6. The specific saturation magnetization (σ_s) of composition with x⩽0.6 increased with the reaction time, while rapidly decreased in 10 minutes for x>0.6, followed by an increase. Doping Fe₃O₄ with Ni and Zn has dramatically improved homogeneity of epitaxial layer and thermal stability of composite BaFe. Accordingly, optimized magnetic properties and thermal stability were obtained at x=0.6

Keywords

barium compounds; coercive force; ferrites; liquid phase epitaxial growth; magnetic epitaxial layers; magnetic particles; nickel compounds; surface magnetism; thermal stability; zinc compounds; (Ni_0.5Zn_0.5)_xFe_3-xO ₄ epitaxial layers; (NiZn)Fe₃O₄; 95 C; Co-Ni-Ti-Sn substituted barium ferrite; NiZn ferrite; TEM; aging neutral suspensions; barium ferrite particles; coercivity; doping effect; epitaxial growth; full width half maximum; homogeneity; homogeneous composite; homogeneous epitaxial layers; optimized magnetic properties; specific saturation magnetization; surface anisotropy; thermal stability; Aging; Atmosphere; Barium; Epitaxial growth; Epitaxial layers; Ferrites; Iron; Suspensions; Thermal stability; Zinc;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706668

Filename

706668