Structure characteristics and valence state study for La1-xNaxTiO3 synthesized under high-pressure and high-temperature conditions

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	Structure characteristics and valence state study for La1-xNaxTiO3 synthesized under high-pressure and high-temperature conditions
	J. P. Miao; L. P. Li; H. J. Liu; D. P. Xu; Z. Lu; Y. B. Song; W. H. Su; Y. G. Zheng
	2000
发表期刊	Materials Letters
ISSN	0167-577X
卷号	42 期号:1-2 页码:40914
摘要	By using a novel high-pressure, high-temperature method, perovskite oxides of La1-xNaxTiO3 (x = 0.05, 0.1-0.8) with mixed valence state were synthesized. XRD analysis shows a cubic cell for the samples. Cell volumes of the samples with 0.1 less than or equal to x less than or equal to 0.5 decreases as x increases, and the cell Volume for x = 0.05 is smaller than that for x = 0.1. XPS of surface and EPR measurements indicate that Ti ions are of mixed valence of +3 and +4 and that A-cations vacancies exist in the samples. As x increases, the amount of Ti3+ ions decreases and the amount of A-cations vacancies increases. The valence state of Ti ions can be altered by changing both pressure and temperature. (C) 2000 Elsevier Science B.V. All rights reserved.
部门归属	jilin univ, dept phys, changchun 130023, peoples r china. chinese acad sci, changchun inst appl chem, key lab rare earth chem & phys, changchun 130022, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china. ccast, world lab, ctr condensed matter & radiat phys, beijing 100080, peoples r china. jilin univ, anal measurement ctr, changchun 130023, peoples r china.;miao, jp (reprint author), jilin univ, dept phys, changchun 130023, peoples r china
关键词	High-pressure And High-temperature Synthesis Xps Epr Mixed Valence Oxides Electrical-properties
URL	查看原文
WOS记录号	WOS:000084915100001
引用统计	被引频次：27[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37138
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. P. Miao,L. P. Li,H. J. Liu,et al. Structure characteristics and valence state study for La1-xNaxTiO3 synthesized under high-pressure and high-temperature conditions[J]. Materials Letters,2000,42(1-2):40914.
APA	J. P. Miao.,L. P. Li.,H. J. Liu.,D. P. Xu.,Z. Lu.,...&Y. G. Zheng.(2000).Structure characteristics and valence state study for La1-xNaxTiO3 synthesized under high-pressure and high-temperature conditions.Materials Letters,42(1-2),40914.
MLA	J. P. Miao,et al."Structure characteristics and valence state study for La1-xNaxTiO3 synthesized under high-pressure and high-temperature conditions".Materials Letters 42.1-2(2000):40914.