CuO掺杂对钇钡铜氧陶瓷电性能的影响

doi:10.11896/cldb.201902004

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Abstract Based on traditional solid-phase sintering method, three elements, Y₁Ba₂Cu₃O_7-x(YBCO) ceramics as functional phase, glass powder as sintering aids and copper(Ⅱ) oxide (CuO) doping as dopant, can be made into the product—the CuO doped YBCO ceramics. Its microstructure, phase composition and electrical properties have been studied by SEM, XRD, EDS, micro ohm instrument and high temperature alternating humidity test chamber. The study has found that doping CuO can reduce the oxygen defects in the crystal structure of YBCO; as the CuO content increases from 0% to 3%, the ceramic density increases gradually while the resistivity decreases obviously; as the content of CuO is more than 3%, the ceramic density decreases gradually while the resistivity increases obviously; with the increase of CuO content, temperature coefficient of resistance (TCR) shifts from negative to positive gradually, and the TCR is becoming smaller and smaller; when the doping amount of CuO is 3%, the sample has the best comprehensive electrical properties—the resistivity is 1.55×10^-4 Ω·m and the resistance temperature coefficient is -1 470×10^-6/℃.

Key words： yttrium barium copper oxide copper(Ⅱ) oxide doping relative density resistivity temperature coefficient of resistance

Published: 31 January 2019

CLC number:

TM283

Fund:The work was financially supported by the Science and Technology Plan Project of Qingyuan(2015D009), the Science and Technology Plan Project of Qingcheng district, Qingyuan (2015B04)

About author:: Hongming Zhou received his PhD. Degree in chemistry from Institute of Process Engineering(CAS) in 2014.He is currently an associate professor in Central South University.His research interests are lithium battery mate-rials, functional ceramics and surface treatment.Jian Li received his PhD. Degree in metallurgy from Central South University in 2003, he is currently a professor in Central South University. His research inte-rests are new energy materials and devices, nanomate-rials and their comprehensive recovery and utilization.He pays special attention on application research and industrialization research of materials.

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	ZHOU Hongming
	WANG Boyi
	LI Jian
	CHENG Minghui

Cite this article:

ZHOU Hongming,WANG Boyi,LI Jian, et al. Effect of CuO Doping on Electrical Properties of YBCO Ceramics[J]. Materials Reports, 2019, 33(2): 220-224.

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http://www.mater-rep.com/EN/10.11896/cldb.201902004 OR http://www.mater-rep.com/EN/Y2019/V33/I2/220

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