Material dependence of anomalous Nernst effect in perpendicularly magnetized ordered-alloy thin films

作者：Hasegawa K; Mizuguchi M^*; Sakuraba Y; Kamada T; Kojima T; Kubota T; Mizukami S; Miyazaki T; Takanashi K

来源：Applied Physics Letters, 2015, 106(25): 252405.

DOI：10.1063/1.4922901

Material dependence of the anomalous Nernst effect (ANE) in perpendicularly magnetized ordered-alloy thin films is systematically investigated. The ANE was found to have a tendency to increase simply as uniaxial magnetic anisotropy increased at room temperature. The ANE increases as temperature increases from 10 to 300K for all the materials. However, the signs of the ANE in Fe-based ordered-alloys (L1(0)-FePt and L1(0)-FePd) and in a Co/Ni multilayer are opposite to those in Mn-based ordered-alloys (L1(0)-MnGa and D0(22)-Mn2Ga). Ordered-alloys with larger uniaxial magnetic anisotropies reveal larger ANE and might be desirable for thermoelectric applications.

• 出版日期2015-6-22