高等学校化学研究 ›› 2011, Vol. 27 ›› Issue (1): 15-18.
DONG Zhong-ping, HU Bin, CHEN Yan, YUAN Hong-ming* and FENG Shou-hua
DONG Zhong-ping, HU Bin, CHEN Yan, YUAN Hong-ming* and FENG Shou-hua
摘要: Polycrystallines Bi0.5Ca0.5–xLaxFe0.3Mn0.7O3(x=0, 0.05, 0.10, 0.15, 0.20, 0.25) were prepared by molten salt method and showed perovskite orthorhombic structure with space group Pnma. The magnetic measurements indicate that the compounds exhibit antiferromagnetic behavior in a temperature range of 4―300 K. The measurements of transport properties suggest that the substitution of La for Ca enhanced the conductivity, and a kink appeared on the curve of temperature dependence of resistivity at 275 K, which is related to the spin-reorientation in the samples.