Title :
E-Field Tuned Rotation of Magnetic Anisotropy and Enhanced Microwave Performance in FeCoAlO/PZN–PT Multiferroic Composite Prepared by Composition Gradient Sputtering
Author :
Shandong Li ; Jie Xu ; Shiming Xie ; Honglei Du ; Qian Xue ; Xiaoyang Gao ; Caiyun Chen ; Ming Liu ; Feng Xu ; Zhongqiang Hu ; Sun, Nian X.
Author_Institution :
Lab. of Fiber Mater. & Modern Textile, Qingdao Univ., Qingdao, China
Abstract :
An orthogonal biaxial magnetic anisotropy configuration was built in the FeCoAlO/PZN-PT multiferroic composite using two perpendicular uniaxial magnetic anisotropies (UMAs). One is stable and induced by composition gradient, and the other is electric field (E-field) dependent resulting from the magnetoelectric coupling between FeCoAlO ferromagnetic film and the PZN-PT ferroelectric substrate. As a result, the easy axis of a FeCoAlO soft magnetic film can be rotated nearly 90° by the E-field due to the competition between the two UMAs. The magnitude and direction of the ferromagnetic resonance frequency can be manipulated by E-field, and very high resonance frequency up to 9 GHz is achieved in this orthogonal biaxial multiferroic composite.
Keywords :
cobalt compounds; composite materials; ferromagnetic materials; ferromagnetic resonance; interface magnetism; iron compounds; lead compounds; magnetic thin films; magnetoelectric effects; multiferroics; perpendicular magnetic anisotropy; soft magnetic materials; FeCoAlO-Pb(Zn0.33Nb0.67)O3-PbTiO3; composition gradient sputtering; electric-field tuned rotation; enhanced microwave performance; ferroelectric substrate; ferromagnetic film; ferromagnetic resonance frequency; magnetoelectric coupling; multiferroic composite; orthogonal biaxial magnetic anisotropy configuration; perpendicular uniaxial magnetic anisotropies; soft magnetic film; Couplings; Magnetic multilayers; Magnetic resonance; Magnetoelectric effects; Perpendicular magnetic anisotropy; Soft magnetic materials; Biaxial magnetic anisotropy; composition gradient sputtering (CGS); magnetic anisotropy; magnetoelectric (ME) coupling; multiferroic composite;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2321560
