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Title: High energy products in exchange-coupled nanocomposite films

Abstract

Several systems of nanocomposite thin films have been prepared by plasma sputtering and heat treatment. By choosing suitable multilayer structures of the as-deposited films and subsequent heat-treatment processes, the nanostructures of the films have been tailored. The thermal processing is the key to control the morphology. Appropriate heat-treatment processes have been found for the systems studied, which result in the desired nanostructures. For the first time a nearly ideal nanostructure with the soft-phase grains embedded homogeneously in the hard phase grains has been obtained for the FePt-Fe{sub 1{minus}x}Pt{sub x} (x{approximately}0.3) system. Effective intergrain exchange coupling has been realized. As a consequence, high energy products up to 50 MGOe have been achieved.

Authors:
; ; ;
Publication Date:
Research Org.:
Univ. of Nebraska, Lincoln, NE (US)
Sponsoring Org.:
USDOE; National Science Foundation (NSF)
OSTI Identifier:
20000748
DOE Contract Number:  
FG02-86ER45262
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; COMPOSITE MATERIALS; THIN FILMS; HEAT TREATMENTS; LAYERS; MICROSTRUCTURE; IRON ALLOYS; PLATINUM ALLOYS; MAGNETIC PROPERTIES; PERMANENT MAGNETS

Citation Formats

Liu, J.P., Liu, Y., Skomski, R., and Sellmyer, D.J. High energy products in exchange-coupled nanocomposite films. United States: N. p., 1999. Web. doi:10.1109/20.800486.
Liu, J.P., Liu, Y., Skomski, R., & Sellmyer, D.J. High energy products in exchange-coupled nanocomposite films. United States. doi:10.1109/20.800486.
Liu, J.P., Liu, Y., Skomski, R., and Sellmyer, D.J. Wed . "High energy products in exchange-coupled nanocomposite films". United States. doi:10.1109/20.800486.
@article{osti_20000748,
title = {High energy products in exchange-coupled nanocomposite films},
author = {Liu, J.P. and Liu, Y. and Skomski, R. and Sellmyer, D.J.},
abstractNote = {Several systems of nanocomposite thin films have been prepared by plasma sputtering and heat treatment. By choosing suitable multilayer structures of the as-deposited films and subsequent heat-treatment processes, the nanostructures of the films have been tailored. The thermal processing is the key to control the morphology. Appropriate heat-treatment processes have been found for the systems studied, which result in the desired nanostructures. For the first time a nearly ideal nanostructure with the soft-phase grains embedded homogeneously in the hard phase grains has been obtained for the FePt-Fe{sub 1{minus}x}Pt{sub x} (x{approximately}0.3) system. Effective intergrain exchange coupling has been realized. As a consequence, high energy products up to 50 MGOe have been achieved.},
doi = {10.1109/20.800486},
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}
}