A Mossbauer study of spring magnets

Author

Sorescu, Monica ; Grabias, A. ; Valeanu, M.

Author_Institution

Dept. of Phys., Duquesne Univ., Pittsburgh, PA, USA

Volume

39

Issue

5

fYear

2003

Firstpage

2959

Lastpage

2961

Abstract

Several compositions of the Nd_xFe_100-x-yB_y system have been prepared in amorphous ribbon form by a melt spinning method. The Nd and B contents x and y increased from 7.3 and 3.6 to 11 and 6, respectively. The alloys were annealed under optimized conditions to obtain a composite material consisting of the hard magnetic Nd₂Fe₁₄B and soft magnetic α-Fe phases. Phase analysis was performed using Mossbauer spectroscopy as the primary technique. The hyperfine magnetic fields and site populations of the component phases were determined and discussed. All spring magnet compositions were checked by hysteresis loop measurements.

Keywords

Mossbauer effect; amorphous magnetic materials; annealing; boron alloys; exchange interactions (electron); ferromagnetic materials; grain size; hyperfine interactions; iron alloys; magnetic hysteresis; melt spinning; nanocomposites; neodymium alloys; permanent magnets; soft magnetic materials; B contents; Mossbauer study; Nd contents; Nd₂Fe₁₄B; Nd_xFe_100-x-yB_y; Nd_xFe_100-x-yB_y system; amorphous ribbon form; component phases; composite material; compositions; exchange coupled material; hard magnetic Nd₂Fe₁₄B phase; hyperfine magnetic fields; hysteresis loop measurements; melt spinning method; optimized conditions; phase analysis; site populations; soft magnetic α-Fe phase; spring magnet compositions; spring magnets; Amorphous magnetic materials; Amorphous materials; Annealing; Iron alloys; Magnetic field measurement; Magnets; Neodymium; Soft magnetic materials; Spinning; Springs;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.815760

Filename

1233272