Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling

In this work, we experimentally demonstrate that it is possible to induce ferromagnetism in CuO by ball milling without any ferromagnetic dopant. The magnetic measurements indicate that paramagnetic CuO is driven to the ferromagnetic state at room temperature by ball milling gradually. The saturatio...

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Main Authors:	Daqiang Gao, Zhaolong Yang, Jing Zhang, Guijin Yang, Zhonghua Zhu, Jing Qi, Mingsu Si, Desheng Xue
Format:	Article
Language:	English
Published:	AIP Publishing LLC 2011-12-01
Series:	AIP Advances
Online Access:	http://dx.doi.org/10.1063/1.3670360

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spelling	doaj-0ddf56c32b9e40329a4216e8cd459ab72020-11-25T02:28:55ZengAIP Publishing LLCAIP Advances2158-32262011-12-0114042168042168-610.1063/1.3670360074104ADVTransforming from paramagnetism to room temperature ferromagnetism in CuO by ball millingDaqiang Gao0Zhaolong Yang1Jing Zhang2Guijin Yang3Zhonghua Zhu4Jing Qi5Mingsu Si6Desheng Xue7Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaIn this work, we experimentally demonstrate that it is possible to induce ferromagnetism in CuO by ball milling without any ferromagnetic dopant. The magnetic measurements indicate that paramagnetic CuO is driven to the ferromagnetic state at room temperature by ball milling gradually. The saturation magnetization of the milled powders is found to increase with expanding the milling time and then decrease by annealing under atmosphere. The fitted X-ray photoelectron spectroscopy results indicate that the observed induction and weaken of the ferromagnetism shows close relationship with the valence charged oxygen vacancies (Cu1+-VO) in CuO.http://dx.doi.org/10.1063/1.3670360
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Daqiang Gao Zhaolong Yang Jing Zhang Guijin Yang Zhonghua Zhu Jing Qi Mingsu Si Desheng Xue
spellingShingle	Daqiang Gao Zhaolong Yang Jing Zhang Guijin Yang Zhonghua Zhu Jing Qi Mingsu Si Desheng Xue Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling AIP Advances
author_facet	Daqiang Gao Zhaolong Yang Jing Zhang Guijin Yang Zhonghua Zhu Jing Qi Mingsu Si Desheng Xue
author_sort	Daqiang Gao
title	Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling
title_short	Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling
title_full	Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling
title_fullStr	Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling
title_full_unstemmed	Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling
title_sort	transforming from paramagnetism to room temperature ferromagnetism in cuo by ball milling
publisher	AIP Publishing LLC
series	AIP Advances
issn	2158-3226
publishDate	2011-12-01
description	In this work, we experimentally demonstrate that it is possible to induce ferromagnetism in CuO by ball milling without any ferromagnetic dopant. The magnetic measurements indicate that paramagnetic CuO is driven to the ferromagnetic state at room temperature by ball milling gradually. The saturation magnetization of the milled powders is found to increase with expanding the milling time and then decrease by annealing under atmosphere. The fitted X-ray photoelectron spectroscopy results indicate that the observed induction and weaken of the ferromagnetism shows close relationship with the valence charged oxygen vacancies (Cu1+-VO) in CuO.
url	http://dx.doi.org/10.1063/1.3670360
work_keys_str_mv	AT daqianggao transformingfromparamagnetismtoroomtemperatureferromagnetismincuobyballmilling AT zhaolongyang transformingfromparamagnetismtoroomtemperatureferromagnetismincuobyballmilling AT jingzhang transformingfromparamagnetismtoroomtemperatureferromagnetismincuobyballmilling AT guijinyang transformingfromparamagnetismtoroomtemperatureferromagnetismincuobyballmilling AT zhonghuazhu transformingfromparamagnetismtoroomtemperatureferromagnetismincuobyballmilling AT jingqi transformingfromparamagnetismtoroomtemperatureferromagnetismincuobyballmilling AT mingsusi transformingfromparamagnetismtoroomtemperatureferromagnetismincuobyballmilling AT deshengxue transformingfromparamagnetismtoroomtemperatureferromagnetismincuobyballmilling
_version_	1724835670838476800

Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling

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