Exchange bias in tetragonal-like BiFeO3/Sr2FeMoO6 bilayer

doi:10.1016/j.jmmm.2018.05.063

	Exchange bias in tetragonal-like BiFeO3/Sr2FeMoO6 bilayer
	Chen, Chen ; Guo, Lei 1; Li, Chen 2; Gao, Baizhi ; Zheng, Renkui 1; Wang, J.; Li, Qi ; Du, J.; Xu, Qingyu 3,4
刊名	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
	2018
卷号	464 页码:156
ISSN号	0304-8853
DOI	10.1016/j.jmmm.2018.05.063
英文摘要	Exchange bias in the bilayer of half-metallic La0.7Sr0.3MnO3 and multiferroic BiFeO3 has been applied for the electric field control of magnetization, which is strongly limited by the much low blocking temperature of about 100 K (Phys. Rev. Lett. 105, 027201 (2010)). One possible solution is to strengthen the interfacial exchange coupling, thus another half-metallic oxide Sr2FeMoO6 is selected. Tetragonal-like BiFeO3 has been successfully fabricated on (0 0 1) SrTiO3 substrate using Sr2FeMoO6 as buffer layer. By replacing the exchange coupling between Fe and Mn ions in BiFeO3/La0.7Sr0.3MnO3 bilayer, stronger exchange couplings between Fe and Fe ions are established at the interface, and the blocking temperature has been significantly increased to 160 K. A second blocking temperature at 110 K due to the exchange coupling between Fe and Mo ions is also observed. Detailed magnetization measurements confirm the conventional mechanism of exchange coupling between ferromagnetic and antiferromagnetic layers and exclude the contribution from surface spin glass. Furthermore, BiFeO3 still retains excellent ferroelectric properties with Sr2FeMoO6 acting as ferromagnetic conducting electrode, which may have important applications in multiferroic spintronics devices.
学科主题	Materials Science, Multidisciplinary ; Physics, Condensed Matter
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000434254000022
资助机构	This work is supported by the National Natural Science Foundation of China (51471085, 51771053), the Natural Science Foundation of Jiangsu Province of China (BK20151400), the Fundamental Research Funds for the Central Universities, and the open research fund of Key Laboratory of MEMS of Ministry of Education, Southeast University. ; This work is supported by the National Natural Science Foundation of China (51471085, 51771053), the Natural Science Foundation of Jiangsu Province of China (BK20151400), the Fundamental Research Funds for the Central Universities, and the open research fund of Key Laboratory of MEMS of Ministry of Education, Southeast University.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24643]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Southeast Univ, Sch Phys, Nanjing 211189, Jiangsu, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 3.Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210008, Jiangsu, Peoples R China 4.Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China 5.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 6.Wang, J.; Du, J.] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Chen, Chen,Guo, Lei,Li, Chen,et al. Exchange bias in tetragonal-like BiFeO3/Sr2FeMoO6 bilayer[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2018,464:156, 160.
APA	Chen, Chen.,Guo, Lei.,Li, Chen.,Gao, Baizhi.,Zheng, Renkui.,...&Xu, Qingyu.(2018).Exchange bias in tetragonal-like BiFeO3/Sr2FeMoO6 bilayer.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,464,156.
MLA	Chen, Chen,et al."Exchange bias in tetragonal-like BiFeO3/Sr2FeMoO6 bilayer".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 464(2018):156.