稀土掺杂Nd_(0.5)Sr_(0.5)MnO_3多晶样品的磁性研究

The Study of Magnetic Properties of Rare Earth Doped Nd_(0.5)Sr_(0.5)MnO_3 Polycrystalline Sample

利用X射线衍射仪(XRD)和超导量子磁强计(SQUID),研究了Nd_(0.5)Sr_(0.5)MnO_3多晶样品的结构和磁性.结果表明,样品为单一正交畸变钙钛矿结构,空间群为Pbnm,具有很好的单相性.在整个温度区,样品出现了一个磁转变温度点(T_C=275K),当温度高于T_C时,样品处于顺磁态,而在低温区,样品呈现软铁磁性.

Polycrystalline sample Nd0.5Sr0.5MnO3 was prepared by conventional solid state reaction method,and analysis the structure and magnetic properties by XRD and SQUID. Research shows that the samples are in single phase. The sample goes through paramagnetic to ferromagnetic transition in the whole temperature range （TC=275 K）. When the temperature is higher than Tc, the sample is paramagnetic,and soft ferromagnetic state in the low temperature.