Analysis on Crystal Growth Mechanism of Oxides by In-situ Observation Method.

• TAKEI Humihiko

  Department of Earth and Space Science, Faculty of Science, Osaka University

Bibliographic Information

Other Title

• その場観察・測定による酸化物結晶の成長機構解析
• ソノバ カンサツ ソクテイ ニヨル サンカブツ ケッショウ ノ セイチョウ キ

Abstract

Growth mechanism of oxide crystals from a heterogeneous condition of solid-melt mixtures formed by incongruent melting has been analyzed using a newly developed in-situ observation system, which is composed of a time-resolving X-ray powder diffraction apparatus using a PSPC (Position Sensitive Proportional Counter) combined with an optical microscope, images of which are detected by a CCD sensor and stored into a video-recording system. Measurements are carried out on the oxide superconductor system Y-Ba-Cu-O, where well-habited single crystals of the superconductive compound YBa₂Cu₃O_x are easily obtained from a mixture of solid Y₂BaCuO₅ and liquid with the aid of the peritectic reaction. The results indicate that recrystallization by Ostwald ripening plays a main role in such a heterogeneous condition and diffusion of YBa₂Cu₃O_x molecules in the liquid phase determines the whole growth rate.

Journal

• Journal of the Mineralogical Society of Japan

  Journal of the Mineralogical Society of Japan 24 (4), 253-258, 1995

  Japan Association of Mineralogical Sciences

Details

• CRID: 1390282681502101248
• NII Article ID: 10008767631
• NII Book ID: AN00084868
• DOI: 10.2465/gkk1952.24.253
• ISSN: 18837018
• ISSN: 04541146
• NDL BIB ID: 4226725
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4226725
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed