Atomic-resolution analysis for the effects of heat treatment temperatures on the growth of chemically-ordered regions in Pb(Mg_1/3Nb_2/3)O₃ thin films

• FAN Cangyu

  Department of Materials Science, Tohoku University

• KIGUCHI Takanori

  Institute for Materials Research, Tohoku University

• AKAMA Akihiro

  Institute for Materials Research, Tohoku University

• KONNO Toyohiko J.

  Institute for Materials Research, Tohoku University

抄録

This paper describes growth behaviors of chemically-ordered regions (CORs) in Pb(Mg_1/3Nb_2/3)O₃ (PMN) epitaxial thin films. The films are crystalized at 650°C, which corresponds to about half of the crystallization temperature of bulk crystals. We obtained PMN epitaxial thin films with high crystallinity by using a metallo-organic decomposition (MOD) process. According to our atomic-resolution analysis using HAADF-STEM images, it is shown that CORs in PMN epitaxial thin films grow by nucleation of small clusters whose sizes are 1 to 2 nm on each side of habit plane, {100} and {110}. In addition, post-annealing process at 700 or 800°C causes growth of CORs. The growth mechanism of CORs is not by the expansion of each cluster but by the nucleation of new clusters. After post-annealing at high temperatures, CORs join with each other on their habit plane and made a network along ⟨100⟩, ⟨110⟩ and ⟨112⟩ direction.

収録刊行物

• Journal of the Ceramic Society of Japan

  Journal of the Ceramic Society of Japan 124 (6), 697-701, 2016

  公益社団法人 日本セラミックス協会

キーワード

• PMN
• Thin film
• Chemically ordered region (COR)
• Chemical solution deposition (CSD)
• HAADF-STEM

詳細情報

• CRID: 1390282680262023808
• NII論文ID: 130005155640
• DOI: 10.2109/jcersj2.16036
• ISSN: 13486535
• ISSN: 18820743
• Web Site: https://www.jstage.jst.go.jp/article/jcersj2/124/6/124_16036/_pdf
• 本文言語コード: ja
• データソース種別:
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  • Crossref
  • CiNii Articles
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