Phase transition of Mn F2 driven by shock compression at pressure of up to 33 GPa

Teruhisa Hongo, Kazutaka G. Nakamura, Toshiyuki Atou, Masae Kikuchi, Kunio Yubuta, Shun Itoh, Keiji Kusaba, Kiyoto Fukuoka, Ken Ichi Kondo

研究成果: Contribution to journalArticle査読

14 被引用数 (Scopus)

抄録

Rutile-type Mn F2 was shock loaded at pressures of 3.6-33.4 GPa by the impact of flyer plates accelerated by a propellant gun. Recovered samples were examined by x-ray powder diffraction analysis and transmission electron microscopy (TEM). A phase transition from the rutile-type structure to the α-Pb O2 -type structure was found above 3.6 GPa. The yield of the α-Pb O2 phase in the recovered samples increased for pressures of up to about 10 GPa and decreased at higher pressures. This phenomenon can be explained by a residual temperature effect. A lamellar pattern consisting of two crystalline phases (rutile and α-Pb O2 -type Mn F2) was observed in the shocked sample by TEM observation. The shock-induced phase transition from the rutile-type structure to the α-Pb O2 -type structure was inferred to proceed via fluorite-related structures or a Pb Cl2 -type structure by comparison with results of previous static high-pressure experiments.

本文言語英語
論文番号104114
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
76
10
DOI
出版ステータス出版済み - 9 28 2007
外部発表はい

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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