research article
Structural phase transition in two-dimensional tetramer-cuprate Na5RbCu4(AsO4)4Cl2
Raman scattering and optical birefringence were used in to investigate a low-temp. phase transition in a single crystal of the 2D Na5RbCu4(AsO4)4Cl2. Phonon anomalies point to a 1st-order nature of the transition. The obsd. transition is most probably related to an order-disorder transition of the Rb ion positions along the z axis within the ionic framework of mixed alkali metal chloride lattices. (c) 2007 American Institute of Physics.
Type
research article
Author(s)
Gnezdilov, V.
Bedarev, V.
Gnatchenko, S.
Pashchenko, M.
Pashkevich, Yu.
Lemmens, P.
Zvyagin, S.
Mo, X.
Hwu, S.-J.
Date Issued
2007
Published in
Volume
33
Start page
684
End page
687
Editorial or Peer reviewed
REVIEWED
Written at
OTHER
EPFL units
Available on Infoscience
February 23, 2017
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