A study of Nd-substituted Sr hexaferrite prepared by hydrothermal synthesis

Author

Wang, J.F. ; Ponton, C.B. ; Harris, I.R.

Author_Institution

Sch. of Metall. & Mater. Sci., Univ. of Birmingham, UK

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2928

Lastpage

2930

Abstract

Nd-substituted Sr hexaferrite (Sr_1-xNd_xFe₁₂O₁₉) plate-like particles were synthesized hydrothermally and then calcined at temperatures ranging from 1100°C to 1250°C for 2 h in air. The effects of the Nd-Sr ratio and the calcination temperature on the phase stability and magnetic properties were investigated. Nd substitution up to a Nd-Sr ratio of 1/8 increases the coercivity without causing any significant deterioration in either the saturation magnetization or the remanence.

Keywords

coercive force; ferrites; heat treatment; magnetic particles; magnetisation; neodymium compounds; remanence; strontium compounds; (SrNd)Fe₁₂O₁₉; 1100 to 1250 degC; Nd-Sr ratio; Nd-substituted Sr hexaferrite; calcination temperature; coercivity; hydrothermal synthesis; magnetic properties; phase stability; plate-like particles; remanence; saturation magnetization; Calcination; Coercive force; Iron; Magnetic properties; Neodymium; Remanence; Saturation magnetization; Stability; Strontium; Temperature distribution;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.803071

Filename

1042413