Multiple magnetic transitions in SmCoAsO

Multiple magnetic transitions in SmCoAsO

The magnetic properties of SmCoAsO have been investigated. Our results differ from early observations. Complicated magnetism consists of antiferromagnetic, ferromagnetic, ferrimagnetic and paramagnetic, even diamagnetism at low field has been observed. A metamagnetic transition was observed, resulti...

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Main Authors: Yongliang Chen, Yajing Cui, Cuihua Cheng, Yong Zhao
Format: Article
Language:English
Published: AIP Publishing LLC 2011-12-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.3660768
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spelling doaj-edefe75793a6476f8e7769ce8afa41462020-11-24T21:09:26ZengAIP Publishing LLCAIP Advances2158-32262011-12-0114042134042134-710.1063/1.3660768039104ADVMultiple magnetic transitions in SmCoAsOYongliang Chen0Yajing Cui1Cuihua Cheng2Yong Zhao3Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), Superconductivity and New Energy R&D Center, 165#, Southwest Jiaotong University, Chengdu, Sichuan 610031, ChinaKey Laboratory of Advanced Technology of Materials (Ministry of Education of China), Superconductivity and New Energy R&D Center, 165#, Southwest Jiaotong University, Chengdu, Sichuan 610031, ChinaSchool of Materials Science and Engineering, University of New South Wales, Sydney, 2052 NSW, AustraliaKey Laboratory of Advanced Technology of Materials (Ministry of Education of China), Superconductivity and New Energy R&D Center, 165#, Southwest Jiaotong University, Chengdu, Sichuan 610031, ChinaThe magnetic properties of SmCoAsO have been investigated. Our results differ from early observations. Complicated magnetism consists of antiferromagnetic, ferromagnetic, ferrimagnetic and paramagnetic, even diamagnetism at low field has been observed. A metamagnetic transition was observed, resulting from a canting of the spins. The interaction between two Co sublattices with canted-structure might take responsibility for the multiple magnetic transitions. Electrical resistivity data indicate that SmCoAsO is metallic conductor with room temperature resistivity of 0.51669 mΩ-cm. Negative magnetoresistance effect suggests a significant suppression of spin-flip scattering by the applied magnetic field. The magnetic phase diagram has been established.http://dx.doi.org/10.1063/1.3660768
collection DOAJ
language English
format Article
sources DOAJ
author Yongliang Chen
Yajing Cui
Cuihua Cheng
Yong Zhao
spellingShingle Yongliang Chen
Yajing Cui
Cuihua Cheng
Yong Zhao
Multiple magnetic transitions in SmCoAsO
AIP Advances
author_facet Yongliang Chen
Yajing Cui
Cuihua Cheng
Yong Zhao
author_sort Yongliang Chen
title Multiple magnetic transitions in SmCoAsO
title_short Multiple magnetic transitions in SmCoAsO
title_full Multiple magnetic transitions in SmCoAsO
title_fullStr Multiple magnetic transitions in SmCoAsO
title_full_unstemmed Multiple magnetic transitions in SmCoAsO
title_sort multiple magnetic transitions in smcoaso
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2011-12-01
description The magnetic properties of SmCoAsO have been investigated. Our results differ from early observations. Complicated magnetism consists of antiferromagnetic, ferromagnetic, ferrimagnetic and paramagnetic, even diamagnetism at low field has been observed. A metamagnetic transition was observed, resulting from a canting of the spins. The interaction between two Co sublattices with canted-structure might take responsibility for the multiple magnetic transitions. Electrical resistivity data indicate that SmCoAsO is metallic conductor with room temperature resistivity of 0.51669 mΩ-cm. Negative magnetoresistance effect suggests a significant suppression of spin-flip scattering by the applied magnetic field. The magnetic phase diagram has been established.
url http://dx.doi.org/10.1063/1.3660768
work_keys_str_mv AT yongliangchen multiplemagnetictransitionsinsmcoaso
AT yajingcui multiplemagnetictransitionsinsmcoaso
AT cuihuacheng multiplemagnetictransitionsinsmcoaso
AT yongzhao multiplemagnetictransitionsinsmcoaso
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