DocumentCode :
3602433
Title :
Magnetic Anisotropy of 
-MnAl Thin Films
Author :
Siqian Zhao ; Hozumi, Toshiya ; LeClair, Patrick ; Mankey, Gary ; Suzuki, Takao
Author_Institution :
Center for Mater. for Inf. Technol., Univ. of Alabama, Tuscaloosa, AL, USA
Volume :
51
Issue :
11
fYear :
2015
Firstpage :
1
Lastpage :
4
Abstract :
The τ-MnAl alloy exhibits a high magnetic anisotropy energy despite the fact that both Mn and Al elements possess a low spin-orbit coupling constant. To understand the magnetic anisotropy mechanism, a systematic experimental study of the correlation between the magnetic anisotropy constant and the saturation magnetization of the τ-phase MnAl thin films has been carried out. A torque measurement has been conducted to determine a uniaxial magnetic anisotropy constant K at various temperatures from 4 to 400 K. It is found that K is linearly dependent on saturation magnetization Ms over the temperature range from 4 to 400 K. This result is at variance with the theoretical predictions.
Keywords :
aluminium alloys; magnetic anisotropy; magnetic thin films; magnetisation; manganese alloys; spin-orbit interactions; τ-MnAl thin films; MnAl; saturation magnetization; spin-orbit coupling constant; temperature 4 K to 400 K; uniaxial magnetic anisotropy constant; Anisotropic magnetoresistance; Magnetic field measurement; Perpendicular magnetic anisotropy; Saturation magnetization; Temperature dependence; Temperature measurement; $tau $ -MnAl; τ-MnAl; magnetic anisotropy mechanism; saturation magnetization; torque measurements;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2015.2436059
Filename :
7111354
Link To Document :
