Kinetics of crystallization in 4BaTiO3-SiO2 glass

被引：11

作者：

Kim, J. E.

Song, C. H.

Park, H. W.

Ohshima, Ken-ichi

Yang, Y. S. ^{[1
]}

机构：

[1] Pusan Natl Univ, Dept Phys, RCDAMP, Sch Nano Sci & Technol, Pusan 609735, South Korea

[2] SPring8 JASRI, Mikazuki, Hyogo 6795198, Japan

[3] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

[4] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 449卷 / 299-301期

关键词：

BaTiO3; crystallization; volume fraction; in situ XRD; glass; nano crystal;

D O I：

10.1016/j.msea.2006.02.275

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have investigated the kinetics of BaTiO3 crystallization in 4BaTiO3-SiO2 glass. Isothermal and non-isothermal in situ X-ray diffraction (XRD) and differential thermal analysis (DTA) measurements were performed. It has been found that the small particle of BaTiO3 crystals grow up to a size of 30 nm when the sample is annealed from room temperature to 900 degrees C with a heating rate of 2 K/min. The transformed volume fraction, calculated from the non-isothermal in situ XRD measurements, agrees well with the result of DTA investigation. The Avrami exponent that is used to describe the crystallization kinetics has been determined to be "unity" from isothermal in situ XRD measurements, indicating that the crystallization mechanism is in the diffusion controlled growth with zero nucleation rate. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：299 / 301

页数：3

共 15 条

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