Negative Magnetoresistance Effect in La-Pb-Mn-O Bulk Manganese Oxides
ZHAO Tong-yun, LI Min, ZHAO Xue-gen, WANG Fang-wei, LI Yun-fei, SHEN Bao-gen, ZHAO Jian-gao
State Key Laboratory of Magnetism, institute of Physics, Academia Sinica, Beijing 100080
Negative Magnetoresistance Effect in La-Pb-Mn-O Bulk Manganese Oxides
ZHAO Tong-yun;LI Min;ZHAO Xue-gen;WANG Fang-wei;LI Yun-fei;SHEN Bao-gen;ZHAO Jian-gao
State Key Laboratory of Magnetism, institute of Physics, Academia Sinica, Beijing 100080
关键词 ：
72.15.Gd ,
75.20.Hr ,
76.30.Kg
Abstract ： The structure. magnetic and magnetotransport properties of La1-x Pbx MnO bulk manganese oxides prepared by the standard ceramic techniques were investigated by XRD. VSM, ESM and MR measurements. The sintering condition and the hole doped concentration x have a strong influence on the magnetic properties and magnetoresistance effect. The maximum MR, 20% at room temperature under a field of 2T, was obtained for x= 0.4 and the sintered temperature Ts = 1260°C. The correlation among the structure, magnetic and MR is discussed.
Key words ：
72.15.Gd
75.20.Hr
76.30.Kg
出版日期: 1996-02-01
:
72.15.Gd
(Galvanomagnetic and other magnetotransport effects)
75.20.Hr
(Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions)
76.30.Kg
(Rare-earth ions and impurities)
引用本文:
ZHAO Tong-yun;LI Min;ZHAO Xue-gen;WANG Fang-wei;LI Yun-fei;SHEN Bao-gen;ZHAO Jian-gao
. Negative Magnetoresistance Effect in La-Pb-Mn-O Bulk Manganese Oxides[J]. 中国物理快报, 1996, 13(2): 129-132.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1996/V13/I2/129
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