| Original Articles |
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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 |
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| Cite this article: |
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CUI Yu-Jian, JIA Guang-Qiang, HAN Yan-Bing et al 2004 Chin. Phys. Lett. 21 540-543 |
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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+.
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| Keywords:
75.30.Vn
75.30.Kz
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Published: 01 March 2004
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| PACS: |
75.30.Vn
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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