MISC

1999年6月

Grain boundary grooving by surface diffusion in SrTiO3 bicrystal

JOURNAL OF MATERIALS RESEARCH
  • MX Jin
  • ,
  • E Shimada
  • ,
  • Y Ikuma

14
6
開始ページ
2548
終了ページ
2553
記述言語
英語
掲載種別
出版者・発行元
MATERIALS RESEARCH SOCIETY

High-purity SrTiO3 bicrystal sample (the angle between two [001] directions is 24 degrees) was used in the present experiment to develop a thermal grain boundary groove along the bicrystal grain boundary at different temperatures (1150-1400 degrees C) and times (15-6720 min) in air. An atomic force microscope (AFM) was used to observe the surface morphological change in the annealed bicrystal sample in order to measure the width W and depth h of the developed grain boundary groove. It was found that the log W-log t (at 1150-1400 degrees C) and the log h-log t (at 1400 degrees C) relationships are approximately linear, having slopes of approximately 1/4. Using Mullins' formulas, the surface diffusion coefficients of SrTiO3 at different temperatures were calculated. Finally, the surface diffusion coefficient determined in the present experiment appears to correspond to the titanium atom, which has the lowest diffusivity in SrTiO3..

リンク情報
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000082550600048&DestApp=WOS_CPL
ID情報
  • ISSN : 0884-2914
  • Web of Science ID : WOS:000082550600048

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