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Al2O3 additions to Fe‐Nd‐B magnets: Can pinning be achieved? (abstract)

Publication Type

Journal Article

Authors

Ramesh, Ramamoorthy, G Thomas, B.M Ma

DOI

10.1063/1.340798

Abstract

One of the aspects currently under investigation in Fe‐Nd‐B magnets is that of the temperature dependence of iHc and Br, which are quite high. In this paper a method to overcome this is suggested. It is well known that pinning of domain walls by a second phase, whose magnetic properties are vastly different from those of the matrix, can be very effective when the particle size is about equal to the wall width. With this knowledge, 300‐Å nominal size Al2O3 particles have been added to Fe‐Nd‐B in order to improve its iHc as well as the temperature dependence. For a 1 wt. % addition, a 10% increase in the iHc was noted. Results of magnetic property measurements, microstructural observations as well as Lorentz microscopy will be presented in this paper. © 1988, American Institute of Physics. All rights reserved.

Journal

Journal of Applied Physics

Volume

Year of Publication

1988

ISSN

00218979

Notes

cited By 1

Research Areas

Ramesh Lab