Structure and magnetic properties of annealed metastable FeAg/Pt films

Y. S. Yu; Haibo Li; W. L. Li; Mei Liu; L. P. Yue; W. D. Fei; D. J. Sellmyer

doi:10.1007/s00339-010-6102-5

Structure and magnetic properties of annealed metastable FeAg/Pt films

Y. S. Yu, Haibo Li, W. L. Li, Mei Liu, L. P. Yue, W. D. Fei, D. J. Sellmyer

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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 Fe ₅₀Ag₅₀/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.

Original language	English (US)
Pages (from-to)	301-307
Number of pages	7
Journal	Applied Physics A: Materials Science and Processing
Volume	103
Issue number	2
DOIs	https://doi.org/10.1007/s00339-010-6102-5
State	Published - May 2011
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)

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title = "Structure and magnetic properties of annealed metastable FeAg/Pt films",

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 Fe 50Ag50/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.",

author = "Yu, {Y. S.} and Haibo Li and Li, {W. L.} and Mei Liu and Yue, {L. P.} and Fei, {W. D.} and Sellmyer, {D. J.}",

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AU - Yu, Y. S.

AU - Li, Haibo

AU - Li, W. L.

AU - Liu, Mei

AU - Yue, L. P.

AU - Fei, W. D.

AU - Sellmyer, D. J.

PY - 2011/5

Y1 - 2011/5

N2 - 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 Fe 50Ag50/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.

AB - 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 Fe 50Ag50/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.

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Structure and magnetic properties of annealed metastable FeAg/Pt films

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