Electric field-tailored giant transformation of magnetic anisotropy and interfacial spin coupling in epitaxial γ′-Fe4N/Pb(Mg1/3Nb2/3)0.7Ti0.3O3(011) multiferroic heterostructures

被引：9

作者：

Lai, Zhengxun ^{[1
]}

Li, Chunlei ^{[2
,3
]}

Li, Zirun ^{[1
]}

Liu, Xiang ^{[1
]}

Zhou, Ziyao ^{[2
,3
]}

Mi, Wenbo ^{[1
]}

Liu, Ming ^{[2
,3
]}

机构：

[1] Tianjin Univ, Sch Sci, Tianjin Key Lab Low Dimens Mat Phys & Preparat Te, Tianjin 300354, Peoples R China

[2] Xi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Shaanxi, Peoples R China

[3] Xi An Jiao Tong Univ, Int Ctr Dielectr Res, Xian 710049, Shaanxi, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2019年 / 7卷 / 28期

基金：

中国国家自然科学基金;

关键词：

ATOMIC LAYERS; FERROMAGNETISM;

D O I：

10.1039/c9tc02162k

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electric-field control of magnetization is imperatively desired in spintronic devices with high speed, low energy exhaust and small size. Herein, electric-field control of magnetization and the ferromagnetic resonance field was achieved in the epitaxial gamma'Fe4N/PMN-PT [Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3(011)] heterostructures. At an electric field of +10 kV cm(-1), remanent magnetization with a change as large as similar to 900 emu cm(-3) was observed, together with a tunable ferromagnetic resonance field of 700 Oe. Moreover, nonvolatile control of magnetic anisotropy was also realized. The magnetoelectric coupling (MEC) achieved in this study can be ascribed to the spin-dependent screening effect. In addition, remarkable negative damping appears in the high-frequency measurement. These results provide a new platform for greatly enhancing the MEC in properly designed FM/FE heterostructures.

引用

页码：8537 / 8545

页数：9

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