Anomalous variation of A-type antiferromagnetic order and two-dimensional ferromagnetic fluctuation in orbital-ordered La1−xEuxMnO3

C. T. Chen; B. N. Lin; Y. Y. Hsu; J. D. Liao; W. H. Cheng; C. Y. Lin; H. C. Ku; J. F. Lee; L. Y. Jang; D. G. Liu

doi:10.1103/PhysRevB.67.214424

Anomalous variation of A-type antiferromagnetic order and two-dimensional ferromagnetic fluctuation in orbital-ordered La_1−xEu_xMnO₃

C. T. Chen
, B. N. Lin
, Y. Y. Hsu
, J. D. Liao
, W. H. Cheng
, C. Y. Lin
, H. C. Ku
, J. F. Lee
, L. Y. Jang
, D. G. Liu

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

19 Citations (Scopus)

Abstract

A-type antiferromagnetic (AF) order with a two-dimensional (2D) ferromagnetic short-range fluctuation was observed in the stoichiometric orthorhombic La_1−xEu_xMnO_3+δ system (0 < x < 1, δ 0 with trivalent Mn³⁺). The observation of strong basal plane ferromagnetic coupling of the A-type AF order with fluctuation above antiferromagnetic Néel temperature T_N strongly indicates a C-type orbital ordering of e_g electrons at higher temperature throughout the whole system. Anomalous decrease of T_N from 139 K for LaMnO₃, to 91 K for La_0.5Eu_0.5MnO₃ and down to 42 K for EuMnO₃ is the result of weaker anisotropic superexchange interaction due to stronger Jahn-Teller lattice distortion in orbital-ordered EuMnO₃ from power x-ray Rietveld analysis and Mn K-edge x-ray absorption near-edge structure spectroscopic study.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.67.214424
Publication status	Published - 2003 Jun 19
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.67.214424

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Chen, C. T., Lin, B. N., Hsu, Y. Y., Liao, J. D., Cheng, W. H., Lin, C. Y., Ku, H. C., Lee, J. F., Jang, L. Y., & Liu, D. G. (2003). Anomalous variation of A-type antiferromagnetic order and two-dimensional ferromagnetic fluctuation in orbital-ordered La_1−xEu_xMnO₃. Physical Review B - Condensed Matter and Materials Physics, 67(21). https://doi.org/10.1103/PhysRevB.67.214424

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title = "Anomalous variation of A-type antiferromagnetic order and two-dimensional ferromagnetic fluctuation in orbital-ordered La1−xEuxMnO3",

abstract = "A-type antiferromagnetic (AF) order with a two-dimensional (2D) ferromagnetic short-range fluctuation was observed in the stoichiometric orthorhombic La1−xEuxMnO3+δ system (0 < x < 1, δ 0 with trivalent Mn3+). The observation of strong basal plane ferromagnetic coupling of the A-type AF order with fluctuation above antiferromagnetic N{\'e}el temperature TN strongly indicates a C-type orbital ordering of eg electrons at higher temperature throughout the whole system. Anomalous decrease of TN from 139 K for LaMnO3, to 91 K for La0.5Eu0.5MnO3 and down to 42 K for EuMnO3 is the result of weaker anisotropic superexchange interaction due to stronger Jahn-Teller lattice distortion in orbital-ordered EuMnO3 from power x-ray Rietveld analysis and Mn K-edge x-ray absorption near-edge structure spectroscopic study.",

author = "Chen, \{C. T.\} and Lin, \{B. N.\} and Hsu, \{Y. Y.\} and Liao, \{J. D.\} and Cheng, \{W. H.\} and Lin, \{C. Y.\} and Ku, \{H. C.\} and Lee, \{J. F.\} and Jang, \{L. Y.\} and Liu, \{D. G.\}",

year = "2003",

month = jun,

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doi = "10.1103/PhysRevB.67.214424",

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T1 - Anomalous variation of A-type antiferromagnetic order and two-dimensional ferromagnetic fluctuation in orbital-ordered La1−xEuxMnO3

AU - Chen, C. T.

AU - Lin, B. N.

AU - Hsu, Y. Y.

AU - Liao, J. D.

AU - Cheng, W. H.

AU - Lin, C. Y.

AU - Ku, H. C.

AU - Lee, J. F.

AU - Jang, L. Y.

AU - Liu, D. G.

PY - 2003/6/19

Y1 - 2003/6/19

N2 - A-type antiferromagnetic (AF) order with a two-dimensional (2D) ferromagnetic short-range fluctuation was observed in the stoichiometric orthorhombic La1−xEuxMnO3+δ system (0 < x < 1, δ 0 with trivalent Mn3+). The observation of strong basal plane ferromagnetic coupling of the A-type AF order with fluctuation above antiferromagnetic Néel temperature TN strongly indicates a C-type orbital ordering of eg electrons at higher temperature throughout the whole system. Anomalous decrease of TN from 139 K for LaMnO3, to 91 K for La0.5Eu0.5MnO3 and down to 42 K for EuMnO3 is the result of weaker anisotropic superexchange interaction due to stronger Jahn-Teller lattice distortion in orbital-ordered EuMnO3 from power x-ray Rietveld analysis and Mn K-edge x-ray absorption near-edge structure spectroscopic study.

AB - A-type antiferromagnetic (AF) order with a two-dimensional (2D) ferromagnetic short-range fluctuation was observed in the stoichiometric orthorhombic La1−xEuxMnO3+δ system (0 < x < 1, δ 0 with trivalent Mn3+). The observation of strong basal plane ferromagnetic coupling of the A-type AF order with fluctuation above antiferromagnetic Néel temperature TN strongly indicates a C-type orbital ordering of eg electrons at higher temperature throughout the whole system. Anomalous decrease of TN from 139 K for LaMnO3, to 91 K for La0.5Eu0.5MnO3 and down to 42 K for EuMnO3 is the result of weaker anisotropic superexchange interaction due to stronger Jahn-Teller lattice distortion in orbital-ordered EuMnO3 from power x-ray Rietveld analysis and Mn K-edge x-ray absorption near-edge structure spectroscopic study.

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

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ER -

Anomalous variation of A-type antiferromagnetic order and two-dimensional ferromagnetic fluctuation in orbital-ordered La_1−xEu_xMnO₃

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