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

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number104114
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number10
DOIs
Publication statusPublished - 2007 Sep 28

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Phase transition of Mn F2 driven by shock compression at pressure of up to 33 GPa'. Together they form a unique fingerprint.

Cite this