Large In-Plane Uniaxial Magnetic Anisotropy in the Ferromagnetic/Ferroelectric Heterostructures

Author

Dandan Wen ; Huaiwu Zhang ; Xinliang Hui ; Yicheng Wang ; Zhiyong Zhong ; Feiming Bai

Author_Institution

State Key Lab. of Electron. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol., Chengdu, China

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

Abstract

Amorphous FeSiBC film with large magnetostriction and small magnetocrystalline anisotropy was deposited on the poled (110)-oriented Pb(Mg,Nb)O₃-PbTiO₃ crystal substrate to form ferromagnetic/ferroelectric (FM/FE) heterostructures. It is shown that large in-plane uniaxial magnetic anisotropy (IPUMA)(>250 Oe) can be induced upon applying in situ magnetic biasing field along the [001] direction during deposition. The IPUMA is tenfold of normally magnetic-field-induced anisotropy of FeSiBC/SiO₂/Si with the same biasing magnetic field, therefore dramatically pushing the FM resonance frequency from 1 to 4.2 GHz. Our investigation shows that the FE domain of the poled Pb(Mg,Nb)O₃-PbTiO₃ crystal can imprint into the FeSiBC layer and provide negative magnetic stress anisotropy upon applying biasing field along the [001] direction, but positive magnetic stress anisotropy upon applying biasing field along the [110] direction.

Keywords

bismuth compounds; electric domains; elemental semiconductors; ferroelectric materials; ferromagnetic materials; internal stresses; iron compounds; magnetic anisotropy; magnetostriction; silicon; silicon compounds; FeSiBC-SiO₂-Si; PbMgNbO₃-PbTiO₃; PbMgNbO₃-PbTiO₃ crystal substrate; amorphous film; ferroelectric domain; ferromagnetic-ferroelectric heterostructures; frequency 1 GHz to 4.2 GHz; in situ magnetic biasing field; in-plane uniaxial magnetic anisotropy; magnetocrystalline anisotropy; magnetostriction; negative magnetic stress anisotropy; Amorphous magnetic materials; Anisotropic magnetoresistance; Magnetic domains; Magnetic resonance; Magnetostriction; Perpendicular magnetic anisotropy; Ferromagnetic resonance (FMR) frequency; heterostructures; magnetic anisotropy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2322381

Filename

6971433