Thermal Lattice Parameters Variation of CaCu_xMn_{7-x}O_{12} Compounds with Trigonal Crystal Structure

• Authors: W. Sławiński , R. Przeniosło , I. Sosnowska , M. Bieringer , I. Margiolaki
• Languages of publication: EN

Abstracts

EN

We report the crystal structure evolution of CaCu_{0.2}Mn_{6.8}O_{12} as a function of temperature between 10 K and 290 K. The analysis of the diffraction data is carried out with the Rietveld method applied to the average trigonal structure of CaCu_{0.2}Mn_{6.8}O_{12}. The x = 0.2 member shows similar low temperature extrema for the unit cell parameter evolution as the previously reported x = 0.1 and x = 0 members of the CaCu_xMn_{7-x}O_{12} system. All magnetic and crystallographic transition temperatures indicated by the unit cell parameter evolution obtained by powder X-ray diffraction methods systematically decrease with increasing Cu content, x.

Keywords

EN

61.05.C-; 65.40.De

Discipline

• 65.40.De: Thermal expansion; thermomechanical effects
• 61.05.C-: X-ray diffraction and scattering(for x-ray diffractometers, see 07.85.Jy; for x-ray studies of crystal defects, see 61.72.Dd, Ff)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 4
• Pages: 1225-1230

Dates

published

2008-04

received

2007-06-03

Contributors

author

W. Sławiński

• Institute of Experimental Physics, University of Warsaw, Hoża 69, PL-00-681 Warsaw, Poland

author

R. Przeniosło

• Institute of Experimental Physics, University of Warsaw, Hoża 69, PL-00-681 Warsaw, Poland

author

I. Sosnowska

• Institute of Experimental Physics, University of Warsaw, Hoża 69, PL-00-681 Warsaw, Poland

author

M. Bieringer

• Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, R3T 2N2 Canada

author

I. Margiolaki

• European Synchrotron Radiation Facility, BP220, Grenoble Cedex, F-38043, France

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Identifiers

DOI

10.12693/APhysPolA.113.1225