Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals

Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals

In this study, we investigated the temperature dependence of magnetostriction in the twinned rhombohedral perovskite structure-based lanthanum cobaltite La0.8Sr0.2CoO3. The magnetostriction measured in a magnetic field applied along the pseudocubic [111]c axis showed large hysteresis and residual st...

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Main Authors: A. Yokosuka, H. Kumagai, M. Fukuda, K. Ando, Y. Hara, K. Sato
Format: Article
Language:English
Published: AIP Publishing LLC 2020-09-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/5.0021751
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spelling doaj-4a0cf385cc114cb0b75ddd307a05350d2020-11-25T03:44:57ZengAIP Publishing LLCAIP Advances2158-32262020-09-01109095217095217-610.1063/5.0021751Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystalsA. Yokosuka0H. Kumagai1M. Fukuda2K. Ando3Y. Hara4K. Sato5Department of Industrial Engineering, Ibaraki National College of Technology, 866 Nakane, Hitachinaka 312-8508, JapanDepartment of Industrial Engineering, Ibaraki National College of Technology, 866 Nakane, Hitachinaka 312-8508, JapanDepartment of Industrial Engineering, Ibaraki National College of Technology, 866 Nakane, Hitachinaka 312-8508, JapanDepartment of Industrial Engineering, Ibaraki National College of Technology, 866 Nakane, Hitachinaka 312-8508, JapanDepartment of Industrial Engineering, Ibaraki National College of Technology, 866 Nakane, Hitachinaka 312-8508, JapanDepartment of Industrial Engineering, Ibaraki National College of Technology, 866 Nakane, Hitachinaka 312-8508, JapanIn this study, we investigated the temperature dependence of magnetostriction in the twinned rhombohedral perovskite structure-based lanthanum cobaltite La0.8Sr0.2CoO3. The magnetostriction measured in a magnetic field applied along the pseudocubic [111]c axis showed large hysteresis and residual strains. The residual strains are caused by the twin deformation, which we observed using x-ray diffraction. We found that the critical magnetic field for the twin deformation of La0.8Sr0.2CoO3 increases with temperature. The twin deformation occurs in a sufficiently strong magnetic field (∼6 T), even in the paramagnetic region at room temperature. We also confirmed that the temperature dependence of the critical magnetic field for twin deformation is related to the temperature dependence of the magnetization.http://dx.doi.org/10.1063/5.0021751
collection DOAJ
language English
format Article
sources DOAJ
author A. Yokosuka
H. Kumagai
M. Fukuda
K. Ando
Y. Hara
K. Sato
spellingShingle A. Yokosuka
H. Kumagai
M. Fukuda
K. Ando
Y. Hara
K. Sato
Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals
AIP Advances
author_facet A. Yokosuka
H. Kumagai
M. Fukuda
K. Ando
Y. Hara
K. Sato
author_sort A. Yokosuka
title Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals
title_short Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals
title_full Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals
title_fullStr Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals
title_full_unstemmed Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals
title_sort room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2020-09-01
description In this study, we investigated the temperature dependence of magnetostriction in the twinned rhombohedral perovskite structure-based lanthanum cobaltite La0.8Sr0.2CoO3. The magnetostriction measured in a magnetic field applied along the pseudocubic [111]c axis showed large hysteresis and residual strains. The residual strains are caused by the twin deformation, which we observed using x-ray diffraction. We found that the critical magnetic field for the twin deformation of La0.8Sr0.2CoO3 increases with temperature. The twin deformation occurs in a sufficiently strong magnetic field (∼6 T), even in the paramagnetic region at room temperature. We also confirmed that the temperature dependence of the critical magnetic field for twin deformation is related to the temperature dependence of the magnetization.
url http://dx.doi.org/10.1063/5.0021751
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AT mfukuda roomtemperaturemagneticshapememoryeffectinstrontiumdopedlanthanumcobaltitesinglecrystals
AT kando roomtemperaturemagneticshapememoryeffectinstrontiumdopedlanthanumcobaltitesinglecrystals
AT yhara roomtemperaturemagneticshapememoryeffectinstrontiumdopedlanthanumcobaltitesinglecrystals
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