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Structure and magnetic properties of annealed metastable FeAg/Pt films

Structure and magnetic properties of annealed metastable FeAg/Pt films FeAg and FeAg/Pt films were prepared by dc magnetron sputtering at room temperature. The effects of Ag volume fraction in FeAg films and postannealing temperature and time on structure and magnetic properties of FeAg and FeAg/Pt films have been investigated. The results show that the as-deposited FeAg films are metastable. After annealing at 300°C, the phase separation of metastable FeAg films happened and the highest coercivity is obtained in Fe50Ag50/Pt film. With increasing annealing temperature, the ordering and the magnetic properties of the Fe50Ag50/Pt films were improved. When the Fe50Ag50/Pt films are annealed at 600°C for different annealing times, a long annealing time enhances the ordering of the metastable Fe50Ag50/Pt films and affects the orientation development. When the films are annealed for a long time, the grain size and the magnetic domain size also increase, which lead to an increase of correlation length due to the growth of FePt grains. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Physics A: Materials Science Processing Springer Journals

Structure and magnetic properties of annealed metastable FeAg/Pt films

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References (28)

Publisher
Springer Journals
Copyright
Copyright © 2010 by Springer-Verlag
Subject
Physics; Surfaces and Interfaces, Thin Films; Optical and Electronic Materials; Condensed Matter Physics; Operating Procedures, Materials Treatment; Characterization and Evaluation of Materials; Nanotechnology
ISSN
0947-8396
eISSN
1432-0630
DOI
10.1007/s00339-010-6102-5
Publisher site
See Article on Publisher Site

Abstract

FeAg and FeAg/Pt films were prepared by dc magnetron sputtering at room temperature. The effects of Ag volume fraction in FeAg films and postannealing temperature and time on structure and magnetic properties of FeAg and FeAg/Pt films have been investigated. The results show that the as-deposited FeAg films are metastable. After annealing at 300°C, the phase separation of metastable FeAg films happened and the highest coercivity is obtained in Fe50Ag50/Pt film. With increasing annealing temperature, the ordering and the magnetic properties of the Fe50Ag50/Pt films were improved. When the Fe50Ag50/Pt films are annealed at 600°C for different annealing times, a long annealing time enhances the ordering of the metastable Fe50Ag50/Pt films and affects the orientation development. When the films are annealed for a long time, the grain size and the magnetic domain size also increase, which lead to an increase of correlation length due to the growth of FePt grains.

Journal

Applied Physics A: Materials Science ProcessingSpringer Journals

Published: Nov 23, 2010

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