Phase transition and electrical properties of Ni1-xZnxMn2O4 (0 <= x <= 1.0) NTC ceramics
Cheng, F (Cheng, Fei)1; Wang, JH (Wang, Junhua)1; Zhang, HM (Zhang, Huimin)1; Chang, AM (Chang, Aimin)1; Kong, WW (Kong, Wenwen)1; Zhang, B (Zhang, Bo)1; Chen, L (Chen, Long)1
2015
Source PublicationJOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
ISSN0957-4522
Volume26Issue:3Pages:1374-1380
Abstract

The Ni1-xZnxMn2O4 (0 <= x <= 1.0) negative temperature coefficient (NTC) ceramics were prepared by the traditional solid state reaction method. X-ray diffraction results show that the as-sintered ceramics transformed to tetragonal spinel (x = 1) gradually from cubic spinel (x = 0). Scanning electron microscope images show that the shape of grains changed with increasing Zn ions content, because of the stress in grains induced by phase transition. The resistivity decreased slightly with increasing Zn ions content for x <= 0.25, but increased remarkably for higher Zn ions content. The values of rho(25), B-25/50 and activation energy for Ni1-xZnxMn2O4 (0 <= x <= 0.8) NTC thermistors were in the range of 3,511-136,780 Omega cm, 3,913-4,491 K and 0.3271-0.3691 eV, respectively. The values of relative resistance drift Delta R/R-0 (0 <= x <= 0.8) were <2 % and had a minimum of 0.69 %, after aging test for 500 h. According to the complex impedance analysis, both of the NTC characteristic (0 <= x <= 1.0) and the increase of resistivity with adding Zn ions content (x > 0.25), were attributed to the increase of grain boundaries resistance.

DOI10.1007/s10854-014-2549-z
Indexed BySCI
WOS IDWOS:000350223700013
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Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/4892
Collection中国科学院特殊环境功能材料与器件重点试验室
材料物理与化学研究室
Corresponding AuthorChang, AM (Chang, Aimin)
Affiliation1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Cheng, F ,Wang, JH ,Zhang, HM ,et al. Phase transition and electrical properties of Ni1-xZnxMn2O4 (0 <= x <= 1.0) NTC ceramics[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2015,26(3):1374-1380.
APA Cheng, F .,Wang, JH .,Zhang, HM .,Chang, AM .,Kong, WW .,...&Chen, L .(2015).Phase transition and electrical properties of Ni1-xZnxMn2O4 (0 <= x <= 1.0) NTC ceramics.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,26(3),1374-1380.
MLA Cheng, F ,et al."Phase transition and electrical properties of Ni1-xZnxMn2O4 (0 <= x <= 1.0) NTC ceramics".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 26.3(2015):1374-1380.
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