Electric-field-induced spin wave generation using multiferroic magnetoelectric cells

被引：134

作者：

Cherepov, Sergiy ^{[1
]}

Amiri, Pedram Khalili ^{[1
]}

Alzate, Juan G. ^{[1
]}

Wong, Kin ^{[1
]}

Lewis, Mark ^{[1
]}

Upadhyaya, Pramey ^{[1
]}

Nath, Jayshankar ^{[1
]}

Bao, Mingqiang ^{[1
]}

Bur, Alexandre ^{[2
]}

Wu, Tao ^{[2
]}

Carman, Gregory P. ^{[2
]}

Khitun, Alexander ^{[3
]}

Wang, Kang L. ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA

[3] Univ Calif Riverside, Dept Elect Engn, Riverside, CA 92521 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 08期

关键词：

MAGNETOELASTIC WAVES; DEVICE; FILM;

D O I：

10.1063/1.4865916

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this work, we report on the demonstration of voltage-driven spin wave excitation, where spin waves are generated by multiferroic magnetoelectric (ME) cell transducers driven by an alternating voltage, rather than an electric current. A multiferroic element consisting of a magnetostrictive Ni film and a piezoelectric [Pb(Mg1/3Nb2/3)O-3]((1-x))-[PbTiO3](x) substrate was used for this purpose. By applying an AC voltage to the piezoelectric, an oscillating electric field is created within the piezoelectric material, which results in an alternating strain-induced magnetic anisotropy in the magnetostrictive Ni layer. The resulting anisotropy-driven magnetization oscillations propagate in the form of spin waves along a 5 mu m wide Ni/NiFe waveguide. Control experiments confirm the strain-mediated origin of the spin wave excitation. The voltage-driven spin wave excitation, demonstrated in this work, can potentially be used for low-dissipation spin wave-based logic and memory elements. (C) 2014 AIP Publishing LLC.

引用

页数：5