Voltage-controlled Kerr response in Ni/Pb(Zr_(0.52)Ti_(0.48))O_3 heterostructures  

作　　者：Ya Gao Zheng Li Li Shu Jing Ma Cewen Nan 

机构地区：[1]School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University

出　　处：《Chinese Science Bulletin》2014年第36期5218-5222,共5页

基　　金：supported by the National Natural Science Foundation of China(11234005,51332001 and51221291);the Beijing Education Committee(20121000301)

摘　　要：Voltage-modified magneto-optical Kerr effect(MOKE) is widely used to describe the converse magnetoelectric(ME) effect in the ferroelectric/ferromagnetic(FE/FM) heterostructures. However, the applied voltage can possibly give rise to electro-optical effect of the FE layer, which would also affect the Kerr signals in the MOKE system. Here, we used an AC voltage to modulate the magnetization in the Ni/Pb(Zr0.52Ti0.48)O3(PZT) heterostructures with different pre-polarization states of the PZT layers to investigate the complexity of the Kerr signals. The results suggested that the voltage control of Kerr signal contained several origins; however, the straininduced ME effect dominated in the ME effect in the heterostructures.Voltage-modified magneto-optical Kerr effect（MOKE） is widely used to describe the converse magnetoelectric（ME） effect in the ferroelectric/ferromagnetic（FE/FM） heterostructures. However, the applied voltage can possibly give rise to electro-optical effect of the FE layer, which would also affect the Kerr signals in the MOKE system. Here, we used an AC voltage to modulate the magnetization in the Ni/Pb（Zr0.52Ti0.48）O3（PZT） heterostructures with different pre-polarization states of the PZT layers to investigate the complexity of the Kerr signals. The results suggested that the voltage control of Kerr signal contained several origins; however, the straininduced ME effect dominated in the ME effect in the heterostructures.

关 键 词：异质结构 电压控制 O3 磁光克尔效应 电压调节 铅 镍 二氧化锆 

分 类 号：TM27[一般工业技术—材料科学与工程]