CAJ | 학술논문

研究了Lao0.67-xGdxSr0.33CoO3、La0.67-xGdxSr0.33MnO3 (x=0.00,0.05,0.10,0.20,0.30,0.40,0.50,0.60,0.67)体系的M-T曲线、M-H曲线.结果表明:随Gd掺杂浓度增高,La0.67-xGdxSr0.33CoO3体系的磁结构表现为团簇玻璃态,x＞0.10样品的M-T曲线出现了低温区M值急剧上升的奇特现象；La0.67-xGdxSr0.33MnO3体系的磁结构从长程铁磁有序向团簇玻璃态、反铁磁状态转变,x≥0.50样品的M-T曲线在低温区急剧下降.两种体系呈现的不同现象,来源于Gd与Co、Mn不同的耦合作用和Co的自旋态的转变.
연구료Lao0.67-xGdxSr0.33CoO3、La0.67-xGdxSr0.33MnO3 (x=0.00,0.05,0.10,0.20,0.30,0.40,0.50,0.60,0.67)체계적M-T곡선、M-H곡선.결과표명:수Gd참잡농도증고,La0.67-xGdxSr0.33CoO3체계적자결구표현위단족파리태,x＞0.10양품적M-T곡선출현료저온구M치급극상승적기특현상；La0.67-xGdxSr0.33MnO3체계적자결구종장정철자유서향단족파리태、반철자상태전변,x≥0.50양품적M-T곡선재저온구급극하강.량충체계정현적불동현상,래원우Gd여Co、Mn불동적우합작용화Co적자선태적전변.
M-T curves,and M-H curves of La0.67-xGdxSr0.33CoO3,La0.67-xGdxSr0.33MnO3(x=0.00,0.05,0.10,0.20,0.30,0.40,0.50,0.60,0.67) systems were measured.The results show that with increasing of doping Gd,magnetic structure of the La0.67-xGdxSr0.33CoO3 system exhibits cluster glass state,and the M-T curves of samples with x＞0.10 exhibit a peculiar phenomenon that M value rises sharply in a low temperature range; magnetic structure of La0.67-xGdxSr0.33MnO3 system changes from long-rang ferromagnetic order to cluster glass state,anti-ferromagnetic state,and the M-T curves of samples with x≥0.50 decline sharply in a low temperature range.The different phenomena shown by the two systems come from different coupling function between Gd and Co,Mn and from spin state transition of Co.