Preparation and characterization of LaMn0.5Co0.5O3-Ni0.66Mn2.34O4 composite NTC ceramics
Huang, CP (Huang, Cuiping); Chen, L (Chen, Long); Zhang, QA (Zhang, Qinan); Chang, SN (Chang, Shannan); Zhang, B (Zhang, Bo); Chang, AM (Chang, Aimin); Zhang, HM (Zhang, Huimin)
2016
发表期刊JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
ISSN0957-4522
卷号27期号:7页码:7560-7565
摘要

Negative temperature coefficient (NTC) thermistor materials based on (LaMn0.5Co0.5O3)(x)-(Ni0.66Mn2.34O4)(1-x) (0 a parts per thousand currency sign x a parts per thousand currency sign 0.5) composite ceramics, are fabricated by the conventional solid-state reaction method. The crystal structure, surface morphology and electrical properties of the composite ceramics are investigated and characterized by X-ray powders diffraction (XRD), scanning electron microscope (SEM), and Agilent digital multimeter, respectively. XRD results show that main phases of as-sintered ceramics are a cubic spinel structure Ni0.66Mn2.34O4 phase and a rhombohedral perovskite structure LaMn0.5Co0.5O3 phase. SEM images indicate that the grain size of the composite ceramics decreases with increasing the low-resistivity perovskite phase. The rho (25) and B value of the composite ceramics decreases with increasing x, and the B is still reasonably high in the range of 4000-3500 K when x a parts per thousand currency sign 0.2. Meanwhile, the introduction of the perovskite phase leads to a decrease in the resistance drift, which the Delta R/R-0 is relatively low (0.26-1.8 %) after annealing at 125 A degrees C for 600 h in air atmosphere. These findings exhibit that (LaMn0.5Co0.5O3)(x)-(Ni0.66Mn2.34O4)(1-x) (0 a parts per thousand currency sign x a parts per thousand currency sign 0.5) composite ceramics have a higher electrical stability in comparison with Ni0.66Mn2.34O4 ceramics, are helpful for meeting demands for obtaining better stability and performance of NTC composites ceramics.

DOI10.1007/s10854-016-4737-5
收录类别SCI
WOS记录号WOS:000377896400128
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/4551
专题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
通讯作者Chang, AM (Chang, Aimin)
作者单位1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Xinjiang Key Lab Elect Informat Mat & Devices, 40-1 South Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Huang, CP ,Chen, L ,Zhang, QA ,et al. Preparation and characterization of LaMn0.5Co0.5O3-Ni0.66Mn2.34O4 composite NTC ceramics[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2016,27(7):7560-7565.
APA Huang, CP .,Chen, L .,Zhang, QA .,Chang, SN .,Zhang, B .,...&Zhang, HM .(2016).Preparation and characterization of LaMn0.5Co0.5O3-Ni0.66Mn2.34O4 composite NTC ceramics.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,27(7),7560-7565.
MLA Huang, CP ,et al."Preparation and characterization of LaMn0.5Co0.5O3-Ni0.66Mn2.34O4 composite NTC ceramics".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 27.7(2016):7560-7565.
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