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采用固态反应法合成三元硫化物Y2CrS4,并研究其晶体结构、磁性和磁传输性质。通过精修室温X射线衍射数据,获知其空间群为Pca21、晶胞参数(a=12.51,b=7.53和c=12.49)和原子坐标等微观结构信息。通过研究Y2CrS4的磁化率曲线和磁滞回线,发现其在64 K附近发生反铁磁相变,且在低温有少许铁电性。通过研究其在零磁场和10 T磁场下的传输性质发现,Y2CrS4为半导体材料,且磁阻高达-250倍。
The ternary sulfide Y2CrS4 was synthesized by solid state reaction and its crystal structure, magnetism and magnetic transmission properties were studied. The space group Pca21, microstructure information of unit cell parameters (a = 12.51 , b = 7.53 and c = 12.49 ) and atomic coordinates were obtained through intensive X-ray diffraction data at room temperature. By studying the magnetic susceptibility curve and the hysteresis loop of Y2CrS4, it was found that there was an antiferromagnetic phase transition near 64 K and a little ferroelectric at low temperature. By studying its transmission properties under zero magnetic field and 10 T magnetic field, it is found that Y2CrS4 is a semiconductor material with a reluctance of up to -250 times.