High temperature 2:17 magnets: relationship of magnetic properties to microstructure and processing

Author

Hadjipanayis, G.C. ; Tang, Wei ; Zhang, Y. ; Chui, S.T. ; Liu, J.F. ; Chen, C. ; Kronmüller, H.

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

3382

Lastpage

3387

Abstract

A comprehensive and systematic study on Sm(Co_balFe_vCu_yZr_x)_z magnets is made to completely understand the effects of composition and processing on their magnetic properties. These studies include the compositions required for the formation of cellular/lamellar microstructure, the effects of compositions (x, y, v, z) and processing (aging temperature and time) on microstructure and magnetic properties, the evolution of microstructure and magnetic properties and the magnetic hardening. All of these effects and results may be summed up as changing microstructure and microchemistry, which leads to a variation of the distribution and amount of Cu at the 1:5 cell boundaries. This becomes the most predominant factor controlling the pinning strength and therefore the coercivity and its temperature dependence

Keywords

ageing; cobalt alloys; coercive force; copper alloys; crystal microstructure; ferromagnetic materials; iron alloys; magnetic anisotropy; permanent magnets; samarium alloys; zirconium alloys; 1:5 cell boundaries; Sm(Co_balFe_vCu_yZr_x) _z magnets; SmCoFeCuZr; aging temperature; cellular/lamellar microstructure; coercivity; composition; hard magnetic materials; high temperature 2:17 magnets; magnetic hardening; magnetic properties; magnetocrystalline anisotropy; microchemistry; permanent magnets; pinning strength; processing; temperature dependence; Aging; Coercive force; Iron; Magnetic materials; Magnetic properties; Magnets; Microstructure; Saturation magnetization; Temperature dependence; Zirconium;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908808

Filename

908808