High Resolution X-Ray Scattering Study of the Anion Ordering Phase Transition of (TMTSF)2ClO4

Jean Paul Pouget; Tetsuo Nakajima; Seiichi Kagoshima; Tsuyoshi Tamegai; Yoshio Nogami; Koichi Kubo; Klaus Bechgaard

doi:10.1143/JPSJ.59.2036

High Resolution X-Ray Scattering Study of the Anion Ordering Phase Transition of (TMTSF)₂ClO₄

Jean Paul Pouget, Tetsuo Nakajima, Seiichi Kagoshima, Tsuyoshi Tamegai, Yoshio Nogami, Koichi Kubo, Klaus Bechgaard

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

The anions of (TMTSF)₂ClO₄ order below about 24 K. The speed at which this transition is passed has a drastic influence on the low temperature electronic properties of this salt. We determined as a function of the cooling rate the number of ordered ClO₄ as well as the average size of the ordered domains. A high resolution X-ray synchrotron radiation study showed that this transition exhibited very unusual features probably due to the coupling of the anions with angular deformations of the Bravais lattice during the ordering process. We investigated also the kinetics of the Ising order parameter describing the anion ordering by a study of the temporal evolution of a superlattice reflection during thermal annealing of quenched samples.

Original language	English
Pages (from-to)	2036-2053
Number of pages	18
Journal	journal of the physical society of japan
Volume	59
Issue number	6
DOIs	https://doi.org/10.1143/JPSJ.59.2036
Publication status	Published - 1990
Externally published	Yes

Keywords

X-ray scattering
anion ordering
superlattice reflection,thermal annealing
synchrotron radiation
thermal quenching

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.59.2036

Cite this

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title = "High Resolution X-Ray Scattering Study of the Anion Ordering Phase Transition of (TMTSF)2ClO4",

abstract = "The anions of (TMTSF)2ClO4 order below about 24 K. The speed at which this transition is passed has a drastic influence on the low temperature electronic properties of this salt. We determined as a function of the cooling rate the number of ordered ClO4 as well as the average size of the ordered domains. A high resolution X-ray synchrotron radiation study showed that this transition exhibited very unusual features probably due to the coupling of the anions with angular deformations of the Bravais lattice during the ordering process. We investigated also the kinetics of the Ising order parameter describing the anion ordering by a study of the temporal evolution of a superlattice reflection during thermal annealing of quenched samples.",

keywords = "X-ray scattering, anion ordering, superlattice reflection,thermal annealing, synchrotron radiation, thermal quenching",

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T1 - High Resolution X-Ray Scattering Study of the Anion Ordering Phase Transition of (TMTSF)2ClO4

AU - Pouget, Jean Paul

AU - Nakajima, Tetsuo

AU - Kagoshima, Seiichi

AU - Tamegai, Tsuyoshi

AU - Nogami, Yoshio

AU - Kubo, Koichi

AU - Bechgaard, Klaus

PY - 1990

Y1 - 1990

N2 - The anions of (TMTSF)2ClO4 order below about 24 K. The speed at which this transition is passed has a drastic influence on the low temperature electronic properties of this salt. We determined as a function of the cooling rate the number of ordered ClO4 as well as the average size of the ordered domains. A high resolution X-ray synchrotron radiation study showed that this transition exhibited very unusual features probably due to the coupling of the anions with angular deformations of the Bravais lattice during the ordering process. We investigated also the kinetics of the Ising order parameter describing the anion ordering by a study of the temporal evolution of a superlattice reflection during thermal annealing of quenched samples.

AB - The anions of (TMTSF)2ClO4 order below about 24 K. The speed at which this transition is passed has a drastic influence on the low temperature electronic properties of this salt. We determined as a function of the cooling rate the number of ordered ClO4 as well as the average size of the ordered domains. A high resolution X-ray synchrotron radiation study showed that this transition exhibited very unusual features probably due to the coupling of the anions with angular deformations of the Bravais lattice during the ordering process. We investigated also the kinetics of the Ising order parameter describing the anion ordering by a study of the temporal evolution of a superlattice reflection during thermal annealing of quenched samples.

KW - X-ray scattering

KW - anion ordering

KW - superlattice reflection,thermal annealing

KW - synchrotron radiation

KW - thermal quenching

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