| Transport Properties of Polycrystalline La_(2/3)Ca_(1/3)Mn_(1-x)Cu_xO_3 Prepared by Sol-Gel |
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| 作者姓名： | 杨应平 |
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| 作者单位： | YANG Ying-ping 1，2) YUAN Song-liu 1) XIA Zheng-cai 1) ZHANG Guo-hong 1) ZHANG Li-jiang 1) 1)Huazhong University of Science and Technology 2)Wuhan University of Technology |
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| 基金项目： | NationalNaturalScienceFoundationofChina (GrantNo .10 1740 2 2 ) |
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| 摘 要： | 1 ＩｎｔｒｏｄｕｃｔｉｏｎＭａｎｇａｎｅｓｅｐｅｒｏｖｓｋｉｔｅｓ ,ｓｕｃｈａｓＲ1-ｙＡｙＭｎＯ3 (Ｒ =ｒａｒｅ ｅａｒｔｈｅｌｅｍｅｎｔ,Ａ =ｄｉｖａｌｅｎｔｅｌｅｍｅｎｔ) ,ａｒｅａｔｔｒａｃｔｉｎｇｃｏｎｓｉｄｅｒａｂｌｅｔｈｅｏｒｅｔｉｃａｎｄｔｅｃｈｎｏｌｏｇｉｃａｌｉｎｔｅｒｅｓｔｓｂｙｖｉｒｔｕｅｏｆｔｈｅｄｉｓｃｏｖｅｒｙｏｆｔｈｅｃｏｌｏｓｓａｌｍａｇｎｅｔｏｒｅｓｉｓｔａｎｃｅ(ＣＭＲ) 1,2 ] .ＣＭＲｉｓｃａｕｓｅｄｂｙｔｈｅｃｏｍｐｌｅｘｎａｔｕｒｅｏｆｉｎ ｔｅｒｐｌａｙｏｆ…
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Transport Properties of Polycrystalline La2/3Ca1/3Mn1-x CuxO3 Prepared by Sol-Gel |
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| YANG Ying-ping,YUAN Song-liu,XIA Zheng-Cai,ZHANG Guo-hong,ZHANG Li-Jiang.Transport Properties of Polycrystalline La_(2/3)Ca_(1/3)Mn_(1-x)Cu_xO_3 Prepared by Sol-Gel[J].Journal of Wuhan University of Technology. Materials Science Edition,2002,17(4). |
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| Authors: | YANG Ying-ping YUAN Song-liu XIA Zheng-Cai ZHANG Guo-hong ZHANG Li-Jiang |
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| Abstract: | The influence of Cu dopant (x) and sintering temperature (T s) on the transport properties of La 2/3Ca 1/3Mn 1-xCu xO 3 series samples prepared by Sol-Gel technique was investigated.X-ray diffraction patterns show that all the samples with different Cu dopant and sintering temperatures (T s) are of single phase without obvious lattice distortion.Experimental results indicate that the insulator-metal transition temperature is directly related to the sintering temperature and Cu dopant x.It is interesting to observe that a proper amount of Cu dopant can substantially improve magnetoresistance effects. |
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| Keywords: | Cu doping sol-gel intergrain magnetoresistance |
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