The inference of Ying et al.[EPL 104 , 67005 (2013)] of a composition-induced change from c-axis ordered-moment alignment in a collinear A-type AFM structure (AFMI) at small~x to ab-plane alignment in an unknown AFM structure (AFMII) at larger~x in \cscawith the body-centered tetragonal \tcsstructure is confirmed. Our major finding is an anomalous magnetic behavior in the crossover region 0.2\lesssim x \lesssim 0.3 between these two phases. In this region the magnetic susceptibility versus temperature~\chi_ab(T) measured with magnetic fields~H applied in the ab~plane exhibit typical AFM behaviors with cusps at the N\'eel temperatures of \mbox{\sim 65~K}, whereas \chi_c(T) and the low-temperature isothermal magnetization M_c(H) with H aligned along the c~axis exhibit extremely soft ferromagnetic-like behaviors.

中文翻译：

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流动电子反铁磁体Ca1-xSrxCo2-yAs2的磁性异常组成诱导交叉

Ying等人[EPL 104，67005（2013）]的推论是，由复合物引起的从共线A型AFM结构（AFMI）的c轴有序矩对准在小x到a平面对准变化在一个未知的AFM结构（AFMII）中，以体心四角形\ tcs结构在\ cs中的较大x处被确认。我们的主要发现是在这两个相位之间的交叉区域0.2 \ lesssim x \ lesssim 0.3中有异常的磁性行为。在该区域中，通过将电磁场〜H施加在绝对平面中测得的磁化率与温度的近似值\ chi _ab（T）在N \'elel温度为\ mbox {\ sim 65〜K}时具有典型的AFM行为。 ，而\ chi_c（T）和H沿c_轴对齐的低温等温磁化强度M_c（H）表现出极软的铁磁特性。