Magnetic domain structure and possible low-temperature structural transition in La0.78Ca0.22MnO3 single crystals

D. Mogilyansky; G. Jung; V. Markovich; C. J. van der Beek; Ya M. Mukovskii

doi:10.1016/j.physb.2006.01.232

Magnetic domain structure and possible low-temperature structural transition in La_0.78Ca_0.22MnO₃ single crystals

D. Mogilyansky, G. Jung, V. Markovich, C. J. van der Beek, Ya M. Mukovskii

Department of Physics

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

Abstract

Spontaneous ferromagnetic domain structure in La_0.78Ca_0.22MnO₃ single crystals has been investigated by means of magneto-optical technique. The magnetic domain topology was found to be correlated with the intrinsic twin structure of the investigated crystal. With decreasing temperature the regular network of ferromagnetic domains undergoes significant changes resulting in apparent rotation of the domain walls in the temperature range of 70-150 K. The observed modifications of the domain structure are reversible and the original domain structure can be restored upon heating. The rotation of the domain walls is interpreted in terms of additional twinning of the crystals resulting from the possible low-temperature Jahn-Teller (JT) distortion of the orthorhombic cell.

Original language	English
Pages (from-to)	510-511
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	378-380
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2006.01.232
State	Published - 1 May 2006

Keywords

Jahn-Teller effect
Magnetic domain structure
Magneto-optics
Manganite

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2006.01.232

Cite this

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title = "Magnetic domain structure and possible low-temperature structural transition in La0.78Ca0.22MnO3 single crystals",

abstract = "Spontaneous ferromagnetic domain structure in La0.78Ca0.22MnO3 single crystals has been investigated by means of magneto-optical technique. The magnetic domain topology was found to be correlated with the intrinsic twin structure of the investigated crystal. With decreasing temperature the regular network of ferromagnetic domains undergoes significant changes resulting in apparent rotation of the domain walls in the temperature range of 70-150 K. The observed modifications of the domain structure are reversible and the original domain structure can be restored upon heating. The rotation of the domain walls is interpreted in terms of additional twinning of the crystals resulting from the possible low-temperature Jahn-Teller (JT) distortion of the orthorhombic cell.",

keywords = "Jahn-Teller effect, Magnetic domain structure, Magneto-optics, Manganite",

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AU - Mogilyansky, D.

AU - Jung, G.

AU - Markovich, V.

AU - van der Beek, C. J.

AU - Mukovskii, Ya M.

PY - 2006/5/1

Y1 - 2006/5/1

N2 - Spontaneous ferromagnetic domain structure in La0.78Ca0.22MnO3 single crystals has been investigated by means of magneto-optical technique. The magnetic domain topology was found to be correlated with the intrinsic twin structure of the investigated crystal. With decreasing temperature the regular network of ferromagnetic domains undergoes significant changes resulting in apparent rotation of the domain walls in the temperature range of 70-150 K. The observed modifications of the domain structure are reversible and the original domain structure can be restored upon heating. The rotation of the domain walls is interpreted in terms of additional twinning of the crystals resulting from the possible low-temperature Jahn-Teller (JT) distortion of the orthorhombic cell.

AB - Spontaneous ferromagnetic domain structure in La0.78Ca0.22MnO3 single crystals has been investigated by means of magneto-optical technique. The magnetic domain topology was found to be correlated with the intrinsic twin structure of the investigated crystal. With decreasing temperature the regular network of ferromagnetic domains undergoes significant changes resulting in apparent rotation of the domain walls in the temperature range of 70-150 K. The observed modifications of the domain structure are reversible and the original domain structure can be restored upon heating. The rotation of the domain walls is interpreted in terms of additional twinning of the crystals resulting from the possible low-temperature Jahn-Teller (JT) distortion of the orthorhombic cell.

KW - Jahn-Teller effect

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