| 锰氧化物La_(0.55)Ca_(0.45)MnO_3输运性质的研究 |
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| 引用本文： | 陈勤,潘亚林.锰氧化物La_(0.55)Ca_(0.45)MnO_3输运性质的研究[J].阜阳师范学院学报(自然科学版),2000,17(1):4-7. |
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| 作者姓名： | 陈勤 潘亚林 |
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| 作者单位： | 安徽广播电视大学阜阳分校，安徽建筑工业学院环境工程与电子系 阜阳 236010 中国科学技术大学材料科学与工程系，合肥 230026，合肥 230022 |
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| 摘 要： | 本文中,利用交流磁化率、电阻率、热电势和ERP谱等多种测量手段对锰氧化物La_(0.55)Ca_(0.45)MnO_3多晶样品的输运性质和磁阻特性进行研究。实验结果表明,是双交换作用和小极化子效应的共同作用决定了CMR效应的特性。La_(0.55)Ca_(0.45)MnO_3与La_(0.7)Ca_(0.3)MnO_3样品的电阻率在T<
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| 关 键 词： | La_(0.55)Ca_(0.45)MnO_3 输运性质 CMR效应 |
Study On Transport Properties inManganite Oxide La_(0.55)Ca_(0.45)MnO_3 |
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| Chen Qin.Study On Transport Properties inManganite Oxide La_(0.55)Ca_(0.45)MnO_3[J].Journal of Fuyang Teachers College:Natural Science,2000,17(1):4-7. |
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| Authors: | Chen Qin |
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| Abstract: | The properties of transport and magnetoresistance of manganite oxide La_(0.55)Ca_(0.45)MnO_3 polycrystalline were studied by measuring the susceptibility、resistivity、thermoelectric power and electron paramagnetic resonance spectra. The experimental evidences show that both actions of double exchange interaction and small polarons are responsible for the variation of the CMR effect. The differences between La_(0.7)Ca_(0.3)MnO_3 and La_(0.55)Ca_(0.45)MnO_3in the curves of resistivity at T<
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| Keywords: | La_(0 45)Ca_(0 45)MnO_3 Transport property CMR effect |
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