Resonance Frequency of Ferromagnetic Thin Film Controlled by Rectangle Antidot Arrays

Author

Luo, X.J. ; Zhou, P.H. ; Wang, X. ; Xie, J.L. ; Deng, L.J.

Author_Institution

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

Volume

51

Issue

11

fYear

2015

Firstpage

1

Lastpage

4

Abstract

We have investigated both the static and dynamic magnetic properties of rectangle antidot arrays in a ferromagnetic thin film. The thin films are Fe₆₆Co₁₇B₁₆Si₁ amorphous alloy with different thicknesses (40, 80, 160, and 320 nm) on a Si substrate. Vibrating sample magnetometry and microstrip transmission line measurements are conducted to associate the microwave magnetic analysis of the antidot arrays with hysteresis studies. The patterned films result in the change of ferromagnetic resonance from single-band to multiband, and the destruction of in-plane uniaxial anisotropy. Hence, the mechanisms of multiresonance are proposed to be related to the special domain-wall motion and spin-wave modes what is caused by the demagnetizing field in per-unit area. To study the magnetic torques in per-unit area, The Object Oriented MicroMagnetic Framework (OOMMF) is used to simulate the dynamic magnetization process.

Keywords

boron alloys; cobalt alloys; demagnetisation; ferromagnetic materials; ferromagnetic resonance; iron alloys; magnetic anisotropy; magnetic domain walls; magnetic thin films; magnetometry; quantum dots; silicon alloys; spin waves; Fe₆₆Co₁₇B₁₆Si; Object Oriented MicroMagnetic Framework; Si substrate; amorphous alloy; demagnetizing field; dynamic magnetic properties; dynamic magnetization process; ferromagnetic resonance; ferromagnetic thin film; in-plane uniaxial anisotropy; magnetic hysteresis; magnetic torques; microstrip transmission line measurements; multiresonance mechanisms; rectangle antidot arrays; resonance frequency; size 160 nm; size 320 nm; size 40 nm; size 80 nm; spin-wave modes; static magnetic properties; vibrating sample magnetometry; Demagnetization; Films; Magnetic domains; Magnetic resonance; Perpendicular magnetic anisotropy; Antidots; Ferromagnetic films,; Ferromagnetic resonance; Spin wave; ferromagnetic films; ferromagnetic resonance; spin wave;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2439062

Filename

7114307