New negative temperature coefficient ceramics in La-doped CaCu3Ti4O12 system

doi:10.1007/s10854-019-01358-1

CORC > 新疆理化技术研究所 > 中国科学院新疆理化技术研究所 > 中国科学院特殊环境功能材料与器件重点试验室

	New negative temperature coefficient ceramics in La-doped CaCu3Ti4O12 system
	Jia, XM (Jia, Xuemei)[ 1,2,3 ]; Zhang, B (Zhang, Bo)[ 1,2 ]; Chang, AM (Chang, Aimin)[ 1,2 ]
刊名	JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
	2019
卷号	30 期号:11 页码:10217-10223
ISSN号	0957-4522
DOI	10.1007/s10854-019-01358-1
英文摘要	The Ca1-xLaxCu3Ti4O12 (0x0.3) ceramics have been successfully prepared by the traditional solid-state reaction method at 1090 degrees C for 10h. Effects of La3+ doping on the structure and negative temperature coefficient electrical properties of Ca1-xLaxCu3Ti4O12 ceramics are investigated in detail. Scanning electron microscope images demonstrate that the grain size of ceramic samples decreases with the increasing La3+ content. X-ray photoelectron spectroscopy analysis further confirms the coexistence of Cu+/Cu2+ and Ti3+/Ti4+ ions, which is one of the considerable contributors to the electrical conductivity of Ca1-xLaxCu3Ti4O12 ceramics. All the prepared ceramics show a linear relationship between the natural logarithm of the resistivity and the reciprocal of absolute temperature, indicating NTC characteristics. The obtained values of (25), B-200/400 and Ea for the thermistors are in the range of 2.00x10(5)-5.22x10(7)cm(-1), 2644-4205K, 0.228-0.363eV, respectively.
WOS记录号	WOS:000469399700018
内容类型	期刊论文
源URL	[http://ir.xjipc.cas.cn/handle/365002/5757]
专题	新疆理化技术研究所_中国科学院特殊环境功能材料与器件重点试验室新疆理化技术研究所_材料物理与化学研究室
作者单位	1.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Jia, XM ,Zhang, B ,Chang, AM . New negative temperature coefficient ceramics in La-doped CaCu3Ti4O12 system[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2019,30(11):10217-10223.
APA	Jia, XM ,Zhang, B ,&Chang, AM .(2019).New negative temperature coefficient ceramics in La-doped CaCu3Ti4O12 system.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,30(11),10217-10223.
MLA	Jia, XM ,et al."New negative temperature coefficient ceramics in La-doped CaCu3Ti4O12 system".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 30.11(2019):10217-10223.