Magnetic nonuniformity and thermal hysteresis of magnetism in a manganite thin film

Surendra Singh; M. R. Fitzsimmons; T. Lookman; J. D. Thompson; H. Jeen; A. Biswas; M. A. Roldan; M. Varela

doi:10.1103/PhysRevLett.108.077207

Magnetic nonuniformity and thermal hysteresis of magnetism in a manganite thin film

Surendra Singh
, M. R. Fitzsimmons
, T. Lookman
, J. D. Thompson
, H. Jeen
, A. Biswas
, M. A. Roldan
, M. Varela

Computational Earth Science, Earth and Environmental Sciences Division, Los Alamos National Laboratory
Homi Bhabha National Institute
University of Florida
Oak Ridge National Laboratory
Complutense University

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53 引用（Scopus）

摘要

We measured the chemical and magnetic depth profiles of a single crystalline (La _1-xPr _x) _1-yCa _yMnO _3-δ (x=0.52±0.05, y=0.23±0.04, δ=0.14±0.10) film grown on a NdGaO ₃ substrate using x-ray reflectometry, electron microscopy, electron energy-loss spectroscopy, and polarized neutron reflectometry. Our data indicate that the film exhibits coexistence of different magnetic phases as a function of depth. The magnetic depth profile is correlated with a variation of chemical composition with depth. The thermal hysteresis of ferromagnetic order in the film suggests a first-order ferromagnetic transition at low temperatures.

源语言	英语
文章编号	077207
期刊	Physical Review Letters
卷	108
期	7
DOI	https://doi.org/10.1103/PhysRevLett.108.077207
出版状态	已出版 - 17 2月 2012
已对外发布	是

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abstract = "We measured the chemical and magnetic depth profiles of a single crystalline (La 1-xPr x) 1-yCa yMnO 3-δ (x=0.52±0.05, y=0.23±0.04, δ=0.14±0.10) film grown on a NdGaO 3 substrate using x-ray reflectometry, electron microscopy, electron energy-loss spectroscopy, and polarized neutron reflectometry. Our data indicate that the film exhibits coexistence of different magnetic phases as a function of depth. The magnetic depth profile is correlated with a variation of chemical composition with depth. The thermal hysteresis of ferromagnetic order in the film suggests a first-order ferromagnetic transition at low temperatures.",

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AU - Singh, Surendra

AU - Fitzsimmons, M. R.

AU - Lookman, T.

AU - Thompson, J. D.

AU - Jeen, H.

AU - Biswas, A.

AU - Roldan, M. A.

AU - Varela, M.

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N2 - We measured the chemical and magnetic depth profiles of a single crystalline (La 1-xPr x) 1-yCa yMnO 3-δ (x=0.52±0.05, y=0.23±0.04, δ=0.14±0.10) film grown on a NdGaO 3 substrate using x-ray reflectometry, electron microscopy, electron energy-loss spectroscopy, and polarized neutron reflectometry. Our data indicate that the film exhibits coexistence of different magnetic phases as a function of depth. The magnetic depth profile is correlated with a variation of chemical composition with depth. The thermal hysteresis of ferromagnetic order in the film suggests a first-order ferromagnetic transition at low temperatures.

AB - We measured the chemical and magnetic depth profiles of a single crystalline (La 1-xPr x) 1-yCa yMnO 3-δ (x=0.52±0.05, y=0.23±0.04, δ=0.14±0.10) film grown on a NdGaO 3 substrate using x-ray reflectometry, electron microscopy, electron energy-loss spectroscopy, and polarized neutron reflectometry. Our data indicate that the film exhibits coexistence of different magnetic phases as a function of depth. The magnetic depth profile is correlated with a variation of chemical composition with depth. The thermal hysteresis of ferromagnetic order in the film suggests a first-order ferromagnetic transition at low temperatures.

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DO - 10.1103/PhysRevLett.108.077207

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VL - 108

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

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ER -

Magnetic nonuniformity and thermal hysteresis of magnetism in a manganite thin film

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