The Structural Phase Transition in Octaflournaphtalene

Gordon A. Mackenzie; J. W. Arthur; G. S. Pawley

doi:10.1088/0022-3719/10/8/016

The Structural Phase Transition in Octaflournaphtalene

Gordon A. Mackenzie
, J. W. Arthur
, G. S. Pawley

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The phase transition in octafluoronaphthalene has been investigated by Raman scattering and neutron powder diffraction. The weight of the experimental evidence points to a unit cell doubling in the a direction, but with no change in space group symmetry. Lattice dynamics calculations support this evidence and indicate that the mechanism of the phase transition may well be the instability of a zone boundary acoustic mode of librational character. The structure of the low-temperature phase has been refined and the Raman spectra of the upper and lower phases are reported.

Original language	English
Journal	Journal of Physics C: Solid State Physics
Volume	10
Issue number	8
Pages (from-to)	1133-1149
ISSN	0022-3719
DOIs	https://doi.org/10.1088/0022-3719/10/8/016
Publication status	Published - 1977

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title = "The Structural Phase Transition in Octaflournaphtalene",

abstract = "The phase transition in octafluoronaphthalene has been investigated by Raman scattering and neutron powder diffraction. The weight of the experimental evidence points to a unit cell doubling in the a direction, but with no change in space group symmetry. Lattice dynamics calculations support this evidence and indicate that the mechanism of the phase transition may well be the instability of a zone boundary acoustic mode of librational character. The structure of the low-temperature phase has been refined and the Raman spectra of the upper and lower phases are reported.",

author = "Mackenzie, \{Gordon A.\} and Arthur, \{J. W.\} and Pawley, \{G. S.\}",

year = "1977",

doi = "10.1088/0022-3719/10/8/016",

language = "English",

volume = "10",

pages = "1133--1149",

journal = "Journal of Physics C: Solid State Physics",

issn = "0022-3719",

publisher = "Institute of Physics",

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T1 - The Structural Phase Transition in Octaflournaphtalene

AU - Mackenzie, Gordon A.

AU - Arthur, J. W.

AU - Pawley, G. S.

PY - 1977

Y1 - 1977

N2 - The phase transition in octafluoronaphthalene has been investigated by Raman scattering and neutron powder diffraction. The weight of the experimental evidence points to a unit cell doubling in the a direction, but with no change in space group symmetry. Lattice dynamics calculations support this evidence and indicate that the mechanism of the phase transition may well be the instability of a zone boundary acoustic mode of librational character. The structure of the low-temperature phase has been refined and the Raman spectra of the upper and lower phases are reported.

AB - The phase transition in octafluoronaphthalene has been investigated by Raman scattering and neutron powder diffraction. The weight of the experimental evidence points to a unit cell doubling in the a direction, but with no change in space group symmetry. Lattice dynamics calculations support this evidence and indicate that the mechanism of the phase transition may well be the instability of a zone boundary acoustic mode of librational character. The structure of the low-temperature phase has been refined and the Raman spectra of the upper and lower phases are reported.

U2 - 10.1088/0022-3719/10/8/016

DO - 10.1088/0022-3719/10/8/016

M3 - Journal article

SN - 0022-3719

VL - 10

SP - 1133

EP - 1149

JO - Journal of Physics C: Solid State Physics

JF - Journal of Physics C: Solid State Physics

IS - 8

ER -

The Structural Phase Transition in Octaflournaphtalene

Abstract

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