Published October 19, 2009
| Version v1
Journal article
Crystal structure and thermal expansion properties of new compound La2Cu0.8Ge3
- 1. College of Materials Science and Engineering, Guangxi University, Nanning, Guangxi 530004 (China)
- 2. Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Ministry of Education, Guangxi University, Nanning, Guangxi 530004 (China)
- 3. College of Physics and Electronic Engineering, Guangxi University for Nationalities, Nanning, Guangxi 530006 (China)
Description
A new ternary compound La2Cu0.8Ge3 was synthesized and studied. The crystal structure of La2Cu0.8Ge3 was refined from X-ray powder diffraction data by Rietveld method. The new compound was found to have a tetragonal α-ThSi2 structure with space group I41/amd (No. 141), and a = 0.42807(2) nm, c = 1.45626(6) nm, Z = 2 and Dcalc = 6.931 g/cm3. The thermal expansion properties of La2Cu0.8Ge3 were investigated using high-temperature powder X-ray diffraction technique in the temperature range from 321 K to 753 K. Results show that its unit-cell parameters increase with increasing temperature. The coefficients of average lattice thermal expansion are α-baram=1.17x10-5K-1, α-barcm=1.09x10-5K-1 and α-barVm=3.42x10-5K-1.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jallcom.2009.06.069Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2009.06.069;
- PII
- S0925-8388(09)01219-5;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 485
- Journal Issue
- 1-2
- Journal Page Range
- p. 739-742
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41119567
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- COPPER ALLOYS; GERMANIUM ALLOYS; INTERMETALLIC COMPOUNDS; LANTHANUM ALLOYS; SPACE GROUPS; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; TETRAGONAL LATTICES; THERMAL EXPANSION; X-RAY DIFFRACTION
- Descriptors DEC
- ALLOYS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; EXPANSION; RARE EARTH ALLOYS; SCATTERING; SYMMETRY GROUPS; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.