Pressure-Induced Phase Transformation of LiIn and LiCd: From NaTl-Type Phases toβ-Brass-Type Alloys
| Autor: | Ulrich S. Schwarz, R. Kniep, K. Syassen, S. Bräuninger |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Intermetallic
chemistry.chemical_element Electronic structure Condensed Matter Physics Diamond anvil cell Electronic Optical and Magnetic Materials Inorganic Chemistry Crystallography chemistry Phase (matter) X-ray crystallography Materials Chemistry Ceramics and Composites Physical and Theoretical Chemistry Electronic band structure Powder diffraction Indium |
| Zdroj: | Journal of Solid State Chemistry. 137:104-111 |
| ISSN: | 0022-4596 |
| Popis: | The authors have performed angle-dispersive X-ray powder diffraction experiments on LiGa, LiIn, LiZn, and LiCd at pressures up to 21 GPa using diamond anvil cell techniques. Upon thermal annealing, LiIn and LiCd are both found to undergo phase transformations at a pressure of 11(1) GPa into high-pressure phases with a {beta}-brass (CsCl) structure. Optical reflectivity measurements indicate metallic behavior of the ambient-pressure phrases. Band structure calculations for LiIn confirm the covalent character of the bonding within the diamond-type indium partial structure. The transformation into the CsCl-type phase is associated with a loss of directional In-In bonds. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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