Antiferromagnetism and Spin Polarization in Double Perovskite SrLaVMoO6

作者：Gotoh Hirotaka; Takeda Yoichi; Asano Hidefumi; Zhong Jianping; Rajanikanth Ammanabrolu; Hono Kazuhiro

来源：Applied Physics Express, 2009, 2(1): 013001.

DOI：10.1143/APEX.2.013001

The magnetic and transport properties of bulk polycrystalline samples of double perovskite SrLaVMoO6 have been investigated. Structural analyses have shown that the samples are almost in single phase with an ordered double perovskite structure. Magnetization versus temperature measurements have indicated that the SrLaVMoO6 compound exhibits a clear cusp at 125 K, which can be attributed to an antiferromagnetic transition. Electrical resistivity rho for the compound showed metallic temperature dependence from 10 to 300 K, and the resistivity rho value at 10 K was as low as 450 mu Omega.cm. A spin polarization P value as high as 0.50 at 4.2 K was measured using the pointcontact Andreev reflection (PCAR) technique. These results were discussed in terms of possible half metallic antiferromagnetism.

• 出版日期2009-1