Structures and magnetic behaviours of TiO2-Mn-TiO2 multilayers

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	Structures and magnetic behaviours of TiO2-Mn-TiO2 multilayers
	Liu, FM ; Ding, P ; Li, JQ
刊名	CHINESE PHYSICS B
	2010
卷号	19 期号:9
ISSN号	1674-1056
通讯作者	Liu, FM (reprint author), Beijing Univ Aeronaut & Astronaut, Dept Phys, Key Lab Micronano Measurement Manipulat & Phys, Sch Phys & Nucl Energy,Minist Educ, Beijing 100191, Peoples R China.
中文摘要	The TiO2-Mn-TiO2 multilayers are successfully grown on glass and silicon substrates by alternately using radio frequency reactive magnetron sputtering and direct current magnetron sputtering. The structures and the magnetic behaviours of these films are characterised with x-ray diffraction, transmission electron microscope (TEM), vibrating sample magnetometer, and superconducting quantum interference device (SQUID). It is shown that the multi-film consists of a mixture of anatase and rutile TiO2 with an embedded Mn nano-film. It is found that there are two turning points from ferromagnetic phase to antiferromagnetic phase. One is at 42 K attributed to interface coupling between ferromagnetic Mn3O4 and antiferromagnetic Mn2O3, and the other is at 97 K owing to the interface coupling between ferromagnetic Mn and antiferromagnetic MnO. The samples are shown to have ferromagnetic behaviours at room temperature from hysteresis in the M H loops, and their ferromagnetism is found to vary with the thickness of Mn nano-film. Moreover, the Mn nano-film has a critical thickness of about 18.5 nm, which makes the coercivity of the multi-film reach a maximum of about 3.965x10-(2) T.
收录类别	SCI
资助信息	Innovation Foundation of Beijing University of Aeronautics and Astronautics for PhD Graduates, China [292122]; Equipment Research Foundation of China [373974]
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/53650]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Liu, FM,Ding, P,Li, JQ. Structures and magnetic behaviours of TiO2-Mn-TiO2 multilayers[J]. CHINESE PHYSICS B,2010,19(9).
APA	Liu, FM,Ding, P,&Li, JQ.(2010).Structures and magnetic behaviours of TiO2-Mn-TiO2 multilayers.CHINESE PHYSICS B,19(9).
MLA	Liu, FM,et al."Structures and magnetic behaviours of TiO2-Mn-TiO2 multilayers".CHINESE PHYSICS B 19.9(2010).