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Phase transitions in the Cu2S nanowires
- Source :
-
Materials Chemistry & Physics . Apr2002, Vol. 75 Issue 1-3, p32. 7p. - Publication Year :
- 2002
-
Abstract
- Phase transitions in the Cu2S nanowires have been studied as a function of temperature and pressure. Differential scanning calorimetry (DSC) shows an endothermic process at 101.8 °C upon heating, corresponding to the phase transition from γ-Cu2S (monoclinic) to β-Cu2S (hexagonal) in the bulk (103.5 °C). However, the reverse phase transition was found to be much lower (74.8 °C). X-ray diffraction (XRD) demonstrates that the c-axis of γ-Cu2S is transformed to the c-axis of β-Cu2S owing to the positional disorder of the Cu atoms. Two high-pressure phases of Cu2S have been identified using a diamond anvil cell and the energy-dispersive XRD technique. [Copyright &y& Elsevier]
- Subjects :
- *NANOWIRES
*COPPER sulfide
*PHASE transitions
Subjects
Details
- Language :
- English
- ISSN :
- 02540584
- Volume :
- 75
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Materials Chemistry & Physics
- Publication Type :
- Academic Journal
- Accession number :
- 7772690
- Full Text :
- https://doi.org/10.1016/S0254-0584(02)00026-3