Structural and Transport Properties for Al- and Fe-Doping La0.67Ca0.33MnO3 Perovskite Manganese
CUI Yu-Jian1, JIA Guang-Qiang2, HAN Yan-Bing1, LI Jin-Bo3, WANG Xin-Yan2, GE Hong-Liang1, CAO Shi-Xun2, ZHANG Jin-Cang2
1Department of Physics, Chinese Institute of Metrology, Hangzhou 310018
2Department of Physics, Shanghai University, Shanghai 200436
3Department of Physics, Henan Polytechnic Institute, Nanyang 473009
Structural and Transport Properties for Al- and Fe-Doping La0.67Ca0.33MnO3 Perovskite Manganese
CUI Yu-Jian1;JIA Guang-Qiang2;HAN Yan-Bing1;LI Jin-Bo3;WANG Xin-Yan2;GE Hong-Liang1;CAO Shi-Xun2;ZHANG Jin-Cang2
1Department of Physics, Chinese Institute of Metrology, Hangzhou 310018
2Department of Physics, Shanghai University, Shanghai 200436
3Department of Physics, Henan Polytechnic Institute, Nanyang 473009
Abstract： The effects of Al and Fe ion doping in Mn sites was studied for the colossal La0.67Ca0.33MnO3 magnetoresistance material. It was found that when the Fe-doping amount x increases, the crystal cell structure has no obvious change, but the crystal cell volume decrease monotonically for Al-doping. Both resistances increase rapidly and the insulator-metal transition temperature moves to lower temperature and decreases linearly with Al-doping. The area for Al-doping is broader than Fe. At small amount of Al-doping, the resistance satisfy the metal transport property when T < TIM. The characteristic of the transport behaviour for Al- and Fe-doping can be explained by terminating the double exchange channel of Mn3+-O2--Mn4+.
(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
引用本文:
CUI Yu-Jian;JIA Guang-Qiang;HAN Yan-Bing;LI Jin-Bo;WANG Xin-Yan;GE Hong-Liang;CAO Shi-Xun;ZHANG Jin-Cang. Structural and Transport Properties for Al- and Fe-Doping La0.67Ca0.33MnO3 Perovskite Manganese[J]. 中国物理快报, 2004, 21(3): 540-543.
CUI Yu-Jian, JIA Guang-Qiang, HAN Yan-Bing, LI Jin-Bo, WANG Xin-Yan, GE Hong-Liang, CAO Shi-Xun, ZHANG Jin-Cang. Structural and Transport Properties for Al- and Fe-Doping La0.67Ca0.33MnO3 Perovskite Manganese. Chin. Phys. Lett., 2004, 21(3): 540-543.
2004, Vol. 21 
