Spin reorientation transition induced by surface reconstruction in epitaxial Fe/Co bilayers

H. C. Lyu; Y. C. Zhao; J. Qi; G. Yang; J. X. Shen; J. Y. Zhang; B. K. Shao; Z. Z. Zhu; Y. Sun; B. G. Shen; W. D. Qin; Y. Q. Guo; S. G. Wang

doi:10.1016/j.jmmm.2021.168019

Spin reorientation transition induced by surface reconstruction in epitaxial Fe/Co bilayers

H. C. Lyu
, Y. C. Zhao^*
, J. Qi
, G. Yang
, J. X. Shen
, J. Y. Zhang
, B. K. Shao
, Z. Z. Zhu
, Y. Sun
, B. G. Shen
, W. D. Qin
, Y. Q. Guo
, S. G. Wang

^*Corresponding author for this work

University of Science and Technology Beijing
CAS - Institute of Physics
University of Cambridge
Beijing Normal University

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

1 Scopus citations

Abstract

Surface reconstruction is a common physical phenomenon, driving the atoms near the surface to form a different spacing or symmetry from the bulk atoms to minimize the free enthalpy of the system. The formation of an asymmetric (7 × 2) reconstruction was observed on (1 1 2)-oriented Fe surface, which may be related to the anisotropic strain distribution induced by lattice mismatch. The influence of reconstruction on in-plane magnetic anisotropy has been studied in epitaxial Fe/Co bilayers grown by molecular beam epitaxy. The evolutions of Co layer thickness-dependent magnetic anisotropy for reconstructed and unreconstructed configurations were investigated by magneto-optic Kerr effect technique. The most significant difference caused by reconstruction took place when t_Co = 3 nm, showing a reconstruction-dependent in-plane spin reorientation transition with a rotation of 90°, which can be attributed to the dramatically enhanced magnetic interface anisotropy of Fe/Co bilayers.

Original language	English
Article number	168019
Journal	Journal of Magnetism and Magnetic Materials
Volume	533
DOIs	https://doi.org/10.1016/j.jmmm.2021.168019
State	Published - 1 Sep 2021
Externally published	Yes

Keywords

Magnetic anisotropy
Magnetic interface anisotropy
Spin reorientation transition
Surface reconstruction

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10.1016/j.jmmm.2021.168019

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@article{7fc5697395b44dfca8876efbb9f8b603,

title = "Spin reorientation transition induced by surface reconstruction in epitaxial Fe/Co bilayers",

abstract = "Surface reconstruction is a common physical phenomenon, driving the atoms near the surface to form a different spacing or symmetry from the bulk atoms to minimize the free enthalpy of the system. The formation of an asymmetric (7 × 2) reconstruction was observed on (1 1 2)-oriented Fe surface, which may be related to the anisotropic strain distribution induced by lattice mismatch. The influence of reconstruction on in-plane magnetic anisotropy has been studied in epitaxial Fe/Co bilayers grown by molecular beam epitaxy. The evolutions of Co layer thickness-dependent magnetic anisotropy for reconstructed and unreconstructed configurations were investigated by magneto-optic Kerr effect technique. The most significant difference caused by reconstruction took place when tCo = 3 nm, showing a reconstruction-dependent in-plane spin reorientation transition with a rotation of 90°, which can be attributed to the dramatically enhanced magnetic interface anisotropy of Fe/Co bilayers.",

keywords = "Magnetic anisotropy, Magnetic interface anisotropy, Spin reorientation transition, Surface reconstruction",

author = "Lyu, \{H. C.\} and Zhao, \{Y. C.\} and J. Qi and G. Yang and Shen, \{J. X.\} and Zhang, \{J. Y.\} and Shao, \{B. K.\} and Zhu, \{Z. Z.\} and Y. Sun and Shen, \{B. G.\} and Qin, \{W. D.\} and Guo, \{Y. Q.\} and Wang, \{S. G.\}",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = sep,

day = "1",

doi = "10.1016/j.jmmm.2021.168019",

language = "英语",

volume = "533",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Spin reorientation transition induced by surface reconstruction in epitaxial Fe/Co bilayers

AU - Lyu, H. C.

AU - Zhao, Y. C.

AU - Qi, J.

AU - Yang, G.

AU - Shen, J. X.

AU - Zhang, J. Y.

AU - Shao, B. K.

AU - Zhu, Z. Z.

AU - Sun, Y.

AU - Shen, B. G.

AU - Qin, W. D.

AU - Guo, Y. Q.

AU - Wang, S. G.

PY - 2021/9/1

Y1 - 2021/9/1

N2 - Surface reconstruction is a common physical phenomenon, driving the atoms near the surface to form a different spacing or symmetry from the bulk atoms to minimize the free enthalpy of the system. The formation of an asymmetric (7 × 2) reconstruction was observed on (1 1 2)-oriented Fe surface, which may be related to the anisotropic strain distribution induced by lattice mismatch. The influence of reconstruction on in-plane magnetic anisotropy has been studied in epitaxial Fe/Co bilayers grown by molecular beam epitaxy. The evolutions of Co layer thickness-dependent magnetic anisotropy for reconstructed and unreconstructed configurations were investigated by magneto-optic Kerr effect technique. The most significant difference caused by reconstruction took place when tCo = 3 nm, showing a reconstruction-dependent in-plane spin reorientation transition with a rotation of 90°, which can be attributed to the dramatically enhanced magnetic interface anisotropy of Fe/Co bilayers.

AB - Surface reconstruction is a common physical phenomenon, driving the atoms near the surface to form a different spacing or symmetry from the bulk atoms to minimize the free enthalpy of the system. The formation of an asymmetric (7 × 2) reconstruction was observed on (1 1 2)-oriented Fe surface, which may be related to the anisotropic strain distribution induced by lattice mismatch. The influence of reconstruction on in-plane magnetic anisotropy has been studied in epitaxial Fe/Co bilayers grown by molecular beam epitaxy. The evolutions of Co layer thickness-dependent magnetic anisotropy for reconstructed and unreconstructed configurations were investigated by magneto-optic Kerr effect technique. The most significant difference caused by reconstruction took place when tCo = 3 nm, showing a reconstruction-dependent in-plane spin reorientation transition with a rotation of 90°, which can be attributed to the dramatically enhanced magnetic interface anisotropy of Fe/Co bilayers.

KW - Magnetic anisotropy

KW - Magnetic interface anisotropy

KW - Spin reorientation transition

KW - Surface reconstruction

UR - https://www.scopus.com/pages/publications/85105693927

U2 - 10.1016/j.jmmm.2021.168019

DO - 10.1016/j.jmmm.2021.168019

M3 - 文章

AN - SCOPUS:85105693927

SN - 0304-8853

VL - 533

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

M1 - 168019

ER -

Spin reorientation transition induced by surface reconstruction in epitaxial Fe/Co bilayers

Abstract

Keywords

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