Magnetic hardening in nanograin Sm-Co 2:17 magnets

Author

Corte-Real, Michelle ; Chen, Zhongmin ; Okumura, Hideyuki ; Hadjipanayis, George

Author_Institution

Dept. of Phys. & Astron., Delaware Univ., Newark, DE, USA

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

3306

Lastpage

3308

Abstract

The magnetic hardening behavior of high coercivity nanograin Sm-Co magnets has been examined through a detailed investigation into their magnetic and microstructural properties. We examined the effects of various substitutions like Zr, Fe and Cu, on the magnetic behavior. Initial magnetization and remanence curves are characteristic of domain wall pinning type or single domain particle behavior. A correlation of results indicates that the reversal is controlled by the pinning of interaction domain walls at local anisotropy minima

Keywords

cobalt alloys; coercive force; magnetic domain walls; nanostructured materials; permanent magnets; remanence; samarium alloys; Sm₂Co₁₇; domain wall pinning; high coercivity nanograin magnets; local anisotropy minima; magnetic hardening; magnetization; remanence; single domain particle; substitution; Coercive force; Iron; Magnetic anisotropy; Magnetic domain walls; Magnetic domains; Magnetic properties; Magnetization; Magnets; Perpendicular magnetic anisotropy; Zirconium;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908779

Filename

908779