Doping effect on electronic transport properties of Sr14(Cu1-yMy)24O41 (M = Zn, Ni)

Polycrystalline samples of Sr14(Cu1-yMy)24O41 (M=Zn/Ni) were prepared by conventional solid-state reaction. The series of samples up to y0.05 are identified to be single phase and no regular shift of lattice parameters a, b, c is found. The measurements of electronic transport show that although the...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2006-05, Vol.381 (1-2), p.168-173
Main Authors: Xie, Hui, Hu, Ni, Wang, Lili, Lin, Ying, Xiong, Rui, Yu, Zuxing, Tang, Wufeng, Wang, Ququan, Shi, Jing
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Conductivity phenomena in semiconductors and insulators
Electronic transport in condensed matter
Exact sciences and technology
Low-field transport and mobility
piezoresistance
Physics
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Summary:Polycrystalline samples of Sr14(Cu1-yMy)24O41 (M=Zn/Ni) were prepared by conventional solid-state reaction. The series of samples up to y0.05 are identified to be single phase and no regular shift of lattice parameters a, b, c is found. The measurements of electronic transport show that although the doping compounds are still semiconductive as the parent phase, Zn and Ni dopants induce a decrease of electrical resistivity. Furthermore, Zn doping depresses the resistivity more significantly than Ni doping. A crossover temperature Trho that exhibits in the Arrhenius plot of the resistivity versus temperature is observed in all the samples and goes up with the increase of the dopants. The origin of the decrease in resistivity with doping and the conduction mechanisms both above Trho and below Trho are discussed.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2006.01.005