skip to main content

SciTech ConnectSciTech Connect

Title: High temperature XRD of Cu{sub 2}GeSe{sub 3}

The Cu{sub 2}GeSe{sub 3} is prepared by solid state synthesis method. The high temperature XRD has been done at different temperature from 30 °C to 450 °C. The reitveld refinement confirms Cu{sub 2}GeSe{sub 3} phase and orthorhombic crystal structure. The lattice constants are increasing with increase in the temperature and their rate of increase with respect to temperature are used for finding the thermal expansion coefficient. The calculation of the linear and volume coefficient of thermal expansion is done from 30 °C to 400 °C. Decrease in the values of linear expansion coefficients with temperature are observed along a and c axis. Since thermal expansion coefficient is the consequence of the distortion of atoms in the lattice; this can be further used to find the minimum lattice thermal conductivity at given temperature.
Authors:
;  [1] ; ;  [2]
  1. Research Institute, SRM university, Kattankulathur-603203 (India)
  2. Department of Physics, Indian Institute of Science, Bangalore-560012 (India)
Publication Date:
OSTI Identifier:
22490537
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COPPER COMPOUNDS; GERMANIUM SELENIDES; LATTICE PARAMETERS; ORTHORHOMBIC LATTICES; SOLIDS; SYNTHESIS; TEMPERATURE DEPENDENCE; THERMAL CONDUCTIVITY; THERMAL EXPANSION; X-RAY DIFFRACTION