Formation and properties of some Nb-doped SrTiO3-based solid solutions

被引：23

作者：

Ianculescu, A

Braileanu, A ^{[1
]}

Zaharescu, M

Guillemet, S

Pasuk, I

Madarász, J

Pokol, G

机构：

[1] Inst Phys Chem IG Murgulescu, 202 Spl Independentei, Bucharest 77208, Romania

[2] Univ Toulouse 3, CIRIMAT, F-31602 Toulouse 4, France

[3] SC ICPE SA, Bucharest 74204, Romania

[4] Budapest Univ Technol & Econ, Inst Gen & Analyt Chem, H-1521 Budapest, Hungary

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2003年 / 72卷 / 01期

关键词：

microstructure; Nb-doped SrTiO3; solid solution; thermal analysis;

D O I：

10.1023/A:1023975904764

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

It is well known that SrTiO3 is one of the widely used materials in the electronic ceramic industry. Donor-type dopants are often added in order to improve the electrical properties of SrTiO3-based ceramics. In the present study, the formation and characteristics of undoped and Nb-doped SrTiO3 were studied as a function of both the niobium dopant concentration and the Sr/Ti ratio (at the same Nb content). The formation mechanism of the mixed Sr(Ti,Nb)O-3 crystals was investigated by XRD and thermal analysis. The niobium solubility in the SrTiO3 perovskite lattice was estimated by means of unit cell parameter data. The influence of Sr concentration on the microstructure of the ceramics obtained was investigated by SEM. Ceramic properties pointed out the influence of the dopant concentration and stoichiometry on the sintering behavior of these materials.

引用

页码：173 / 180

页数：8

共 7 条

[1]

ANG C, 1992, J APPL PHYS, V71, P4451, DOI 10.1063/1.350787

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