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Effect of Eu3+ Doping on Electrical Transport Properties of LaMnO3
Author(s) -
Jinhuan Chen,
Ru Xing,
Jianjun Zhao
Publication year - 2021
Publication title -
iop conference series earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/714/3/032007
Subject(s) - magnetoresistance , orthorhombic crystal system , electrical resistivity and conductivity , materials science , condensed matter physics , doping , perovskite (structure) , atmospheric temperature range , analytical chemistry (journal) , manganite , ionic radius , crystal structure , ferromagnetism , ion , chemistry , magnetic field , crystallography , physics , thermodynamics , optoelectronics , quantum mechanics , organic chemistry , chromatography
Perovskite manganese oxide La 0.87 R 0.13 MnO 3 (R=La, Eu) polycrystalline samples were prepared by high temperature solid-phase reaction. The crystal structure was studied by X-ray diffraction (XRD). Through the resistivity-temperature ( ρ-T ) curve, the electrical transport properties are studied. The magnetoresistance-temperature ( MR-T ) curve was made to study the magnetoresistance effect. The results show that all samples in this group have good monophasic property and belong to orthorhombic system. In the measured temperature region, it belongs to semiconductor material, and the average ion radius of A position is different, and the influence of external magnetic field on electric conduction is different. The ρ-T curve fitting of the samples of this group shows that the samples of this group all follow the conduction mode of variable range jump in the measured temperature region. The magnetoresistance effect of Eu 3+ doped samples is significantly increased, which is beneficial to the practical application of magnetoresistance.

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