TY - JOUR
T1 - Phase transition of Mn F2 driven by shock compression at pressure of up to 33 GPa
AU - Hongo, Teruhisa
AU - Nakamura, Kazutaka G.
AU - Atou, Toshiyuki
AU - Kikuchi, Masae
AU - Yubuta, Kunio
AU - Itoh, Shun
AU - Kusaba, Keiji
AU - Fukuoka, Kiyoto
AU - Kondo, Ken Ichi
PY - 2007/9/28
Y1 - 2007/9/28
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.76.104114
DO - 10.1103/PhysRevB.76.104114
M3 - Article
AN - SCOPUS:34848854172
SN - 0163-1829
VL - 76
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 10
M1 - 104114
ER -