兰州大学学报（自然科学版）
蘭州大學學報（自然科學版）
란주대학학보（자연과학판）
JOURNAL OF LANZHOU UNIVERSITY（NATURAL SCIENCES）
2006年
2期
47-54
,共8页
严国清%刘宁%徐素军%郭焕银%童伟
嚴國清%劉寧%徐素軍%郭煥銀%童偉
엄국청%류저%서소군%곽환은%동위
磁结构%输运行为%庞磁电阻效应
磁結構%輸運行為%龐磁電阻效應
자결구%수운행위%방자전조효응
magnetic structure%transport property%colossal magnetoresistance effect
通过实验研究了La0.67-xSmxSr0.33MnO3(x=0.00,0.10,0.20,0.30)体系的M-T曲线、ESR曲线、ρ-T曲线和MR-T曲线.实验结果表明:随着Sm掺杂的增加,体系从长程铁磁有序向自旋团簇玻璃态和反铁磁状态转变,Sm掺杂引起的磁结构变化和额外磁性耦合将导致CMR效应.
通過實驗研究瞭La0.67-xSmxSr0.33MnO3(x=0.00,0.10,0.20,0.30)體繫的M-T麯線、ESR麯線、ρ-T麯線和MR-T麯線.實驗結果錶明:隨著Sm摻雜的增加,體繫從長程鐵磁有序嚮自鏇糰簇玻璃態和反鐵磁狀態轉變,Sm摻雜引起的磁結構變化和額外磁性耦閤將導緻CMR效應.
통과실험연구료La0.67-xSmxSr0.33MnO3(x=0.00,0.10,0.20,0.30)체계적M-T곡선、ESR곡선、ρ-T곡선화MR-T곡선.실험결과표명:수착Sm참잡적증가,체계종장정철자유서향자선단족파리태화반철자상태전변,Sm참잡인기적자결구변화화액외자성우합장도치CMR효응.
The M-T curves, ESR curves, ρ-T curves and MR-T curves of La0.67-xSmxSr0.33MnO3 (x=0,0.10, 0.20, 0.30) were measured. The experimental results indicate that, with the increase of Sm doping,the system undergoes a transition from long range ferromagnetic order to the cluster-spin glass state and further to antiferromagnetic order. The variation in magnetic structure and extra magnetic coupling caused by Sm doping led to colossal magnetoresistance.
