Co/BiFeO3双层中磁滞回线的交换偏置和垂直位移

IF 1.3 4区 物理与天体物理 Q4 PHYSICS, CONDENSED MATTER Ferroelectrics Letters Section Pub Date : 2021-11-01 DOI:10.1080/07315171.2021.1971006
Liyan Wang, Changzheng Wang
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引用次数: 0

摘要

摘要为了揭示界面交换耦合的机理,采用磁控溅射法测量了(001)LaAlO3 (LAO)衬底上沉积的Co/BiFeO3双分子层的磁滞回线(M-H)。M-H环沿磁场轴呈现水平位移,同时沿磁化轴呈现垂直位移。冻结的未补偿界面自旋导致EB效应,EB与温度和BFO厚度的垂直位移之间存在相似的依赖关系。此外,M-H环也表现出磁化强度的增强,这被认为是由于界面处的诱导净矩所致。
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Exchange bias and vertical shift of the magnetic hysteresis loop in Co/BiFeO3 bilayers
Abstract To reveal the mechanism of interfacial exchange coupling, the magnetic hysteresis (M-H) loop of Co/BiFeO3 bilayers deposited on (001) LaAlO3 (LAO) substrates by magnetron sputtering was measured. The M-H loop displays a horizontal shift along the field axis coexisting with a vertical shift along the magnetization axis. The frozen uncompensated interfacial spins result in the EB effect, as demonstrated by the similar dependencies between EB and the vertical shift in temperature and BFO thickness. In addition, the M-H loop also shows an enhancement in magnetization, which is considered to result from the induced net moments at the interface.
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来源期刊
Ferroelectrics Letters Section
Ferroelectrics Letters Section 物理-物理:凝聚态物理
CiteScore
1.10
自引率
0.00%
发文量
1
审稿时长
4.8 months
期刊介绍: Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.
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