Diffusion of Sr and Zr in BaTiO3 single crystals

被引：57

作者：

Koerfer, Sylvia ^{[1
]}

De Souza, Roger A. ^{[1
]}

Yoo, Han-Ill ^{[2
]}

Martin, Manfred ^{[1
]}

机构：

[1] Univ Aachen, Rhein Westfal TH Aachen, Inst Phys Chem, D-52056 Aachen, Germany

[2] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea

来源：

SOLID STATE SCIENCES | 2008年 / 10卷 / 06期

关键词：

barium titanate; cation diffusion; SIMS;

D O I：

10.1016/j.solidstatesciences.2007.06.017

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The diffusion of strontium and zirconium in single crystal BaTiO3 was investigated in air at temperatures between 1000 degrees C and 1250 degrees C. Thin films of SrTiO3, deposited by spin coating a precursor solution and thin films of zirconium, deposited onto the sample surfaces by sputtering, were used as diffusion sources. The diffusion profiles were measured by SIMS depth profiling on a time-of-flight secondary ion mass spectrometer (ToF-SIMS). The diffusion coefficients of strontium and zirconium were given by D-Sr = 3.6 x 10(2.0 +/- 4.4) exp[-(543 +/- 117) kJ mol(-1)/(RT)] cm(2) s(-1) and D-Zr = 1.1 X 10(1.0 +/- 2.1) exp[-(489 +/- 56) kJ mol(-1)/(RT)] cm(2) s(-1). The results are discussed in terms of different diffusion mechanisms in the perovskite structure of BaTiO3. (c) 2007 Elsevier Masson SAS. All rights reserved.

引用

页码：725 / 734

页数：10

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