摘要
研究了多晶样品Nd_(0.5)Sr_(0.5-x)Ca_xMnO_3(x=0.1,0.2)的磁性.实验结果表明,样品的单相性好,无杂相,空间群为Pbnm.随着温度的降低,样品先后经历了3次磁性转变,分别为顺磁-铁磁转变TC、电荷有序转变TCO和奈尔温度转变TN;在TC以上,系统处于顺磁态,在TC-TCO范围内,系统处于铁磁-顺磁共存态,在TCO-TN范围内,系统处于反铁磁-铁磁-顺磁共存态,在TN以下,系统主要处于反铁磁态.
The magnetic property of Polyerystalline sample Nd_（0.5）Sr_（0.5-x）Ca_xMnO_3（x=0.1,0.2） was studied. The experiment result indicates that the sample is in single phase with the space group Pbnm symmetry. With the decrease of temperature, the sample underwent three magnetic transitions： ferromag- netic transition Tc ,charge-ordering transition Tco, and an antiferromagnetic transition T_N. Above Tc, the sample is paramagnetic, between Tc and Tco, paramagnetic-ferromagnetic coexistence, between Tco and T_N paramagnetic-ferromagnetic-antiferromagntic coexistence, below T_N, the system appears to be antiferro- magnetic.
作者
邢茹
郑琳
鲁毅
赵建军
XING Ru ZHENG Lin LU Yi ZHAO Jian-jun(Department of Physics ,Baotou Normal University ,Baotou 014030,Inner Mongolia ,China Inner Mongolia Key Laboratory of Magnetism and Magnetic Materials ,Baotou Normal University ,Baotou 014030, Inner Mongolia ,China)
出处
《内蒙古师范大学学报（自然科学汉文版）》
CAS
北大核心
2017年第3期334-336,340,共4页
Journal of Inner Mongolia Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(11164019
51562032)
内蒙古自然科学基金资助项目(2015MS0101
2015MS0109)
内蒙古自治区高等学校科学研究项目(NJZZ11166
NJZY12202
NJ10163)
关键词
钙钛矿
电子自旋共振
磁性转变
两相共存
perovskite
electron spin resonance
magnetic transition
two-phase coexistence
