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Title: Temperature coefficients of rare earth permanent magnets

Abstract

A new approach for calculating the temperature coefficients of magnetic parameters is proposed in order to more accurately describe high temperature characteristics of magnetic materials. Using this new approach, the true (or instantaneous) temperature coefficient of any magnetic parameter at a specific temperature can be determined and a plot of temperature coefficient vs. temperature can be obtained. This new type of plot is a very useful tool to present temperature characteristics of a magnetic parameter. Data of temperature coefficient as a function of temperature for magnetization, intrinsic coercivity, and maximum energy product are given for several types of rare earth permanent magnets. By applying the same approach, the temperature coefficients of heavy rare earth substituted magnets are calculated for (Sm{sub 1{minus}x}Gd{sub x})Co{sub 5} and (Sm{sub 1{minus}x}Gd{sub x}){sub 2}TM{sub 17} systems with 0 {le} x {le} 1.

Authors:
;
Publication Date:
Research Org.:
Univ. of Dayton Magnetics Lab., OH (US)
OSTI Identifier:
20000752
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MAGNETIC PROPERTIES; MAGNETIC MATERIALS; TEMPERATURE DEPENDENCE; MAGNETIZATION; COERCIVE FORCE; COBALT BASE ALLOYS; SAMARIUM ALLOYS; GADOLINIUM ALLOYS; PERMANENT MAGNETS

Citation Formats

Liu, S., and Kuhl, G.E. Temperature coefficients of rare earth permanent magnets. United States: N. p., 1999. Web. doi:10.1109/20.800495.
Liu, S., & Kuhl, G.E. Temperature coefficients of rare earth permanent magnets. United States. doi:10.1109/20.800495.
Liu, S., and Kuhl, G.E. Wed . "Temperature coefficients of rare earth permanent magnets". United States. doi:10.1109/20.800495.
@article{osti_20000752,
title = {Temperature coefficients of rare earth permanent magnets},
author = {Liu, S. and Kuhl, G.E.},
abstractNote = {A new approach for calculating the temperature coefficients of magnetic parameters is proposed in order to more accurately describe high temperature characteristics of magnetic materials. Using this new approach, the true (or instantaneous) temperature coefficient of any magnetic parameter at a specific temperature can be determined and a plot of temperature coefficient vs. temperature can be obtained. This new type of plot is a very useful tool to present temperature characteristics of a magnetic parameter. Data of temperature coefficient as a function of temperature for magnetization, intrinsic coercivity, and maximum energy product are given for several types of rare earth permanent magnets. By applying the same approach, the temperature coefficients of heavy rare earth substituted magnets are calculated for (Sm{sub 1{minus}x}Gd{sub x})Co{sub 5} and (Sm{sub 1{minus}x}Gd{sub x}){sub 2}TM{sub 17} systems with 0 {le} x {le} 1.},
doi = {10.1109/20.800495},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt2,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}