Magnetoresistance Effect in (La0.9Nd0.1)2/3Ca1/3Mn1-xFexO3 (x=0, 0.05)
Due to the remarkable magnetoresistance (MR) effect on perovskite-type manganite, magnetoelectronics and spintronics have become attractive subjects of experimental and theoretical investigations for the application purpose. (La<,0.9>Nd<,0.1>)<,2/3>Ca<,1/3> Mn<,1-x>Fe<,x>O<,3> (x=0, x=0.05) were prepared successfully by sol-gel method. The structure, magnetic properties, and transport properties of the compounds were investigated. The magnetoresistance effect depends on the composition and the temperature. XRD patterns show that the compound is a single phase polycrystal with pseudocubic structure. A large negative isotropic magnetoresistance effect in the samples were observed at low temperature region. The maximum MR of the samples was 77％ and 97％, respectively. It was most likely due to the scattering or the tunneling transport of spin- polarized carriers in lattice under strong magnetic field.
sol-gel method magnetoresistance effect perovskite pseudocubic structure rare earths
Zeng Min(曾敏) Feng Meng(冯猛) Wang Xin(王鑫)
Department of Functional Material Research, China Central Iron and Steal Research Institute Group, Beijing 100081, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
225-228
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）