Magneto-optic properties of evaporated Mn-Bi-Al films

J. X. Shen; Roger D. Kirby; D. J. Sellmyer

doi:10.1016/0304-8853(89)90236-9

Magneto-optic properties of evaporated Mn-Bi-Al films

J. X. Shen, Roger D. Kirby, D. J. Sellmyer

Physics and Astronomy

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

18 Scopus citations

Abstract

Thin films of Mn₅₀Bi_xAl_y were made using the co-evaporation method. X-ray diffraction measurements confirmed the presence of MnBi, and weak diffraction lines suggested the presence of a second phase, possibly the MnAl τ phase. Hysteresis loops obtained both from polar Kerr rotation measurements and magnetization measurements were found to be anomalous. These measurements showed that the magnetizations of the two phases are parallel to each other and perpendicular to the film surface, and that the signs of the Kerr rotation are opposite for the two phases. Further, the magnetizations of the two phases are not strongly coupled to one another. A simple model calculation which includes the anisotropy energy of each phase is able to reproduce the salient features of the experimental hysteresis loops.

Original language	English (US)
Pages (from-to)	107-111
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	81
Issue number	1-2
DOIs	https://doi.org/10.1016/0304-8853(89)90236-9
State	Published - Sep 1989

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/0304-8853(89)90236-9

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@article{ac1b135e59424c8c9d87fd3c7a92cf81,

title = "Magneto-optic properties of evaporated Mn-Bi-Al films",

abstract = "Thin films of Mn50BixAly were made using the co-evaporation method. X-ray diffraction measurements confirmed the presence of MnBi, and weak diffraction lines suggested the presence of a second phase, possibly the MnAl τ phase. Hysteresis loops obtained both from polar Kerr rotation measurements and magnetization measurements were found to be anomalous. These measurements showed that the magnetizations of the two phases are parallel to each other and perpendicular to the film surface, and that the signs of the Kerr rotation are opposite for the two phases. Further, the magnetizations of the two phases are not strongly coupled to one another. A simple model calculation which includes the anisotropy energy of each phase is able to reproduce the salient features of the experimental hysteresis loops.",

author = "Shen, {J. X.} and Kirby, {Roger D.} and Sellmyer, {D. J.}",

note = "Funding Information: We are grateful for financial support from the National Science Foundation under Grants INT-8715441 and DMR-8605367. We have benefitted from an equipment grant from the University of Nebraska through Vice Chancellor John K. Yost. Professor Y.J. Wang has provided us assistance and helpful discussions.",

year = "1989",

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doi = "10.1016/0304-8853(89)90236-9",

language = "English (US)",

volume = "81",

pages = "107--111",

journal = "Journal of Magnetism and Magnetic Materials",

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T1 - Magneto-optic properties of evaporated Mn-Bi-Al films

AU - Shen, J. X.

AU - Kirby, Roger D.

AU - Sellmyer, D. J.

N1 - Funding Information: We are grateful for financial support from the National Science Foundation under Grants INT-8715441 and DMR-8605367. We have benefitted from an equipment grant from the University of Nebraska through Vice Chancellor John K. Yost. Professor Y.J. Wang has provided us assistance and helpful discussions.

PY - 1989/9

Y1 - 1989/9

N2 - Thin films of Mn50BixAly were made using the co-evaporation method. X-ray diffraction measurements confirmed the presence of MnBi, and weak diffraction lines suggested the presence of a second phase, possibly the MnAl τ phase. Hysteresis loops obtained both from polar Kerr rotation measurements and magnetization measurements were found to be anomalous. These measurements showed that the magnetizations of the two phases are parallel to each other and perpendicular to the film surface, and that the signs of the Kerr rotation are opposite for the two phases. Further, the magnetizations of the two phases are not strongly coupled to one another. A simple model calculation which includes the anisotropy energy of each phase is able to reproduce the salient features of the experimental hysteresis loops.

AB - Thin films of Mn50BixAly were made using the co-evaporation method. X-ray diffraction measurements confirmed the presence of MnBi, and weak diffraction lines suggested the presence of a second phase, possibly the MnAl τ phase. Hysteresis loops obtained both from polar Kerr rotation measurements and magnetization measurements were found to be anomalous. These measurements showed that the magnetizations of the two phases are parallel to each other and perpendicular to the film surface, and that the signs of the Kerr rotation are opposite for the two phases. Further, the magnetizations of the two phases are not strongly coupled to one another. A simple model calculation which includes the anisotropy energy of each phase is able to reproduce the salient features of the experimental hysteresis loops.

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Magneto-optic properties of evaporated Mn-Bi-Al films

Abstract

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