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Title: Achieving optimum loop shapes in quaternary Pr-Co alloys

Abstract

The magnetic properties and microstructures of a quaternary Pr-Co-Ti-C alloy were investigated. After heat treating at 800 degree sign C, the quaternary alloy developed high coercivity (16.7 kOe) and high energy product (8.6 MGOe). Hysteretic loop shapes exhibiting single-phase magnetic character were achieved which was a problem which previously plagued development of Pr-Co alloys. The optimum microstructure contained 75-100 nm Pr{sub 1}Co{sub 5} hard magnetic grains, 75-100 nm Pr{sub 1}Co{sub 2} second phases, and <10 nm TiC grain boundary precipitates. The important factors in achieving optimum loop shapes in Pr-Co alloys were examined in detail. (c) 2000 American Institute of Physics.

Authors:
 [1];  [2];  [2];  [2]
  1. Lockheed Martin Idaho Technologies, Idaho National Engineering and Environmental Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415-2218 (United States)
  2. Ames Laboratory, Iowa State University, Ames, Iowa 50010 (United States)
Publication Date:
OSTI Identifier:
20216280
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 87; Journal Issue: 9; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PRASEODYMIUM ALLOYS; COBALT ALLOYS; MICROSTRUCTURE; GRAIN BOUNDARIES; SOLIDIFICATION; COERCIVE FORCE; PERMANENT MAGNETS; MAGNETIZATION; TRANSMISSION ELECTRON MICROSCOPY; EXPERIMENTAL DATA

Citation Formats

Branagan, D. J., Kramer, M. J., Tang, Yali, and McCallum, R. W. Achieving optimum loop shapes in quaternary Pr-Co alloys. United States: N. p., 2000. Web. doi:10.1063/1.372825.
Branagan, D. J., Kramer, M. J., Tang, Yali, & McCallum, R. W. Achieving optimum loop shapes in quaternary Pr-Co alloys. United States. doi:10.1063/1.372825.
Branagan, D. J., Kramer, M. J., Tang, Yali, and McCallum, R. W. Mon . "Achieving optimum loop shapes in quaternary Pr-Co alloys". United States. doi:10.1063/1.372825.
@article{osti_20216280,
title = {Achieving optimum loop shapes in quaternary Pr-Co alloys},
author = {Branagan, D. J. and Kramer, M. J. and Tang, Yali and McCallum, R. W.},
abstractNote = {The magnetic properties and microstructures of a quaternary Pr-Co-Ti-C alloy were investigated. After heat treating at 800 degree sign C, the quaternary alloy developed high coercivity (16.7 kOe) and high energy product (8.6 MGOe). Hysteretic loop shapes exhibiting single-phase magnetic character were achieved which was a problem which previously plagued development of Pr-Co alloys. The optimum microstructure contained 75-100 nm Pr{sub 1}Co{sub 5} hard magnetic grains, 75-100 nm Pr{sub 1}Co{sub 2} second phases, and <10 nm TiC grain boundary precipitates. The important factors in achieving optimum loop shapes in Pr-Co alloys were examined in detail. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.372825},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 9,
volume = 87,
place = {United States},
year = {2000},
month = {5}
}