Nd doping induced simultaneous magnetic and electronic transition in La0.83-xNdxKyMnO3

作者：Guo YQ^*; Zhu MG; Li W; Roy S; Ali N; Wappling R

来源：Journal of Magnetism and Magnetic Materials, 2004, 279(2-3): 246-255.

DOI：10.1016/j.jmmm.2004.01.086

• magnetic and electrical transitions
• double magnetoresistance ratio peaks
• rhombohedral-orthorhombic structural transition

We have studied polycrystalline L0.83-xNdxKyMnO3 using powder X-ray diffraction, magnetic and electrical resistance measurements. Nd doping induces a simultaneous transition on the structure, the magnetic order, and the electronic phase in La0.83-xNdxKyMnO3. It exhibits a rhombohedral-orthorhombic structural transition, a ferromagnetic-paramagnetic transition associated with a metal-insulator transition, and a low temperature magnetic transition antiferromagnetic- like associated with a low-temperature insulating state in La0.83-xNdxKyMnO3. Nd doping also results in the presentation of the second magneto resistance ratio (MR) peak at low temperature. All these phenomena might be interpreted by Nd doping induced a phase separation between the ferromagnetic metallic state and the anti ferromagnetic insulating state at low temperature.

• 出版日期2004-8
• 单位钢铁研究总院