Published March 23, 2005 | Version v1
Journal article Metadata-only

The effect of pressure on the structural properties of the spin-tetrahedra compound Cu2Te2O5Br2

Creators

  • 1. Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstrasse 1, D-70569 Stuttgart (Germany)
  • 2. European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble (France)
  • 3. Department of Inorganic Chemistry, Stockholm University, S-10691 Stockholm (Sweden)

Description

The structural properties of the spin-tetrahedra compound Cu2Te2O5Br2 have been investigated under hydrostatic pressure up to 24 GPa by angle-dispersive x-ray powder diffraction using synchrotron radiation. The tetragonal phase (P4-bar, Z = 2) remains stable up to about 14 GPa where a reversible structural phase transition takes place. A monoclinic unit cell is assigned to the high-pressure phase. Refinements of atomic positions have been performed for the low-pressure tetragonal phase. The obtained changes in bond lengths and angles provide valuable information for a modelling of the magnetic couplings in this system under pressure

Availability note (English)

Available online at http://stacks.iop.org/0953-8984/17/S807/cm5_11_010.pdf or at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/

Additional details

Identifiers

URL
http://stacks.iop.org/0953-8984/17/S807/cm5_11_010.pdf; http://www.iop.org/;
DOI
10.1088/0953-8984/17/11/010;
PII
S0953-8984(05)92807-5;

Publishing Information

Journal Title
Journal of Physics. Condensed Matter
Journal Volume
17
Journal Issue
11
Journal Page Range
p. S807-S812
ISSN
0953-8984
CODEN
JCOMEL

Conference

Title
2. international symposium on the physics of solids under high pressure using nuclear probes
Dates
22-25 Jul 2004
Place
Cologne (Germany)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36035278
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BOND LENGTHS; COPPER OXIDES; COUPLING; MONOCLINIC LATTICES; PHASE TRANSFORMATIONS; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; SOLID SOLUTIONS; SPIN; SYNCHROTRON RADIATION; TELLURIUM BROMIDES; TETRAGONAL LATTICES; X-RAY DIFFRACTION
Descriptors DEC
ANGULAR MOMENTUM; BREMSSTRAHLUNG; BROMIDES; BROMINE COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; DIMENSIONS; DISPERSIONS; ELECTROMAGNETIC RADIATION; HALIDES; HALOGEN COMPOUNDS; HOMOGENEOUS MIXTURES; LENGTH; MIXTURES; OXIDES; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; PRESSURE RANGE; RADIATIONS; SCATTERING; SOLUTIONS; TELLURIUM COMPOUNDS; TELLURIUM HALIDES; TRANSITION ELEMENT COMPOUNDS