Promotion of L10 ordering in Pt-rich nonepitaxially grown FePt films

Y. L. Li; T. F. Feng; Q. Chen; A. P. Huang; Z. Y. Chen

doi:10.1016/j.matlet.2011.05.104

Promotion of L1₀ ordering in Pt-rich nonepitaxially grown FePt films

Y. L. Li
, T. F. Feng
, Q. Chen
, A. P. Huang
, Z. Y. Chen^*

^*Corresponding author for this work

School of Physics

Beihang University

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

5 Scopus citations

Abstract

Multilayer Fe/Pt films with atomic ratios Fe_xPt_100-x (x=36∼58) were deposited directly onto quartz glass substrates at room temperature through magnetron sputtering. Post-annealing from 300 °C to 600 °C was carried out to investigate the effect of varied compositions on the L1₀ ordering process. The result, which is different from that of co-sputtering growth, shows an obvious promotion of the phase transformation for slightly Pt-rich off-stoichiometric compositions with x between 40 and 50. The in-plane coercivity of Fe₄₈Pt₅₂ can reach 4.1 kOe even after annealing at 300 °C. This facilitated atomic diffusion and ordering might be related to the lattice expansion due to excessive Pt content.

Original language	English
Pages (from-to)	2589-2591
Number of pages	3
Journal	Materials Letters
Volume	65
Issue number	17-18
DOIs	https://doi.org/10.1016/j.matlet.2011.05.104
State	Published - Sep 2011

Keywords

Magnetic recording materials
Phase transformation
Sputtering
Thin films

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10.1016/j.matlet.2011.05.104

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title = "Promotion of L10 ordering in Pt-rich nonepitaxially grown FePt films",

abstract = "Multilayer Fe/Pt films with atomic ratios FexPt100-x (x=36∼58) were deposited directly onto quartz glass substrates at room temperature through magnetron sputtering. Post-annealing from 300 °C to 600 °C was carried out to investigate the effect of varied compositions on the L10 ordering process. The result, which is different from that of co-sputtering growth, shows an obvious promotion of the phase transformation for slightly Pt-rich off-stoichiometric compositions with x between 40 and 50. The in-plane coercivity of Fe48Pt52 can reach 4.1 kOe even after annealing at 300 °C. This facilitated atomic diffusion and ordering might be related to the lattice expansion due to excessive Pt content.",

keywords = "Magnetic recording materials, Phase transformation, Sputtering, Thin films",

author = "Li, \{Y. L.\} and Feng, \{T. F.\} and Q. Chen and Huang, \{A. P.\} and Chen, \{Z. Y.\}",

year = "2011",

month = sep,

doi = "10.1016/j.matlet.2011.05.104",

language = "英语",

volume = "65",

pages = "2589--2591",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

number = "17-18",

}

TY - JOUR

T1 - Promotion of L10 ordering in Pt-rich nonepitaxially grown FePt films

AU - Li, Y. L.

AU - Feng, T. F.

AU - Chen, Q.

AU - Huang, A. P.

AU - Chen, Z. Y.

PY - 2011/9

Y1 - 2011/9

N2 - Multilayer Fe/Pt films with atomic ratios FexPt100-x (x=36∼58) were deposited directly onto quartz glass substrates at room temperature through magnetron sputtering. Post-annealing from 300 °C to 600 °C was carried out to investigate the effect of varied compositions on the L10 ordering process. The result, which is different from that of co-sputtering growth, shows an obvious promotion of the phase transformation for slightly Pt-rich off-stoichiometric compositions with x between 40 and 50. The in-plane coercivity of Fe48Pt52 can reach 4.1 kOe even after annealing at 300 °C. This facilitated atomic diffusion and ordering might be related to the lattice expansion due to excessive Pt content.

AB - Multilayer Fe/Pt films with atomic ratios FexPt100-x (x=36∼58) were deposited directly onto quartz glass substrates at room temperature through magnetron sputtering. Post-annealing from 300 °C to 600 °C was carried out to investigate the effect of varied compositions on the L10 ordering process. The result, which is different from that of co-sputtering growth, shows an obvious promotion of the phase transformation for slightly Pt-rich off-stoichiometric compositions with x between 40 and 50. The in-plane coercivity of Fe48Pt52 can reach 4.1 kOe even after annealing at 300 °C. This facilitated atomic diffusion and ordering might be related to the lattice expansion due to excessive Pt content.

KW - Magnetic recording materials

KW - Phase transformation

KW - Sputtering

KW - Thin films

UR - https://www.scopus.com/pages/publications/79959570612

U2 - 10.1016/j.matlet.2011.05.104

DO - 10.1016/j.matlet.2011.05.104

M3 - 文章

AN - SCOPUS:79959570612

SN - 0167-577X

VL - 65

SP - 2589

EP - 2591

JO - Materials Letters

JF - Materials Letters

IS - 17-18

ER -

Promotion of L1₀ ordering in Pt-rich nonepitaxially grown FePt films

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Keywords

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