Ni/PMN-PT多铁异质结中电场对磁性的调制  

Electric-Field Modulation Effect on Magnetic Properties in Ni/PMN-PT Multiferroic Heterostructure

作　　者：张旎 侯薇薇 叶晴莹 韩森 陈水源 黄志高 张慧钦 Ni Zhang;Weiwei Hou;Qingying Ye;Sen Han;Shuiyuan Chen*;Zhigao Huang;Huiqin Zhang(Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou Fujian)

机构地区：[1]福建师范大学物理与能源学院,福建省量子调控与新能源材料重点实验室,福建福州

出　　处：《应用物理》2017年第2期31-36,共6页Applied Physics

基　　金：国家自然科学基金(11004031);福建省自然科学基金(2016J01007);福建省新世纪优秀人才计划(JA12054);福建省教育厅重点项目(JA15100)的资助。

摘　　要：采用脉冲激光沉积法制备Ni/PMN-PT复合磁电薄膜。对样品的结构、磁性和磁电效应测量表明,样品表现出明显的电场调制磁性效应,而且这种调制具有非易失性和良好的温度稳定性,因此在信息存储、传感器等领域有潜在应用前景。此外,论文还分析了电场调制机制,即通过在PMN-PT单晶里电场诱导铁电极化产生应力,进而通过磁弹效应对Ni薄膜晶格结构及磁相互作用的产生影响,从而获得此结构中电场对Ni薄膜磁特性的有效调制。Ni/PMN-PT thin film was prepared by pulsed laser deposition (PLD) method. The crystal structure, magnetic properties and magnetoelectric effect were measured. The experimental results indicate that, the thin film presents obvious electric-field modulation effect on magnetic properties. Moreover, this modulation effect is non-volatile and presents temperature stability, which is benefit for the fields including information memory and sensor. Also, the modulation mechanism was investigated. For example, the electric field modulation effect on magnetic properties in Ni/PMN-PT thin film is attributed to the change of the magnetic anisotropy, which results from the ferroelectric polarizing induced-stress.

关 键 词：镍薄膜 铁电体 多铁异质结 磁特性 电场调制 

分 类 号：O48[理学—固体物理]