First- and second-order phase transitions in ternary europium phosphides with ThCr2Si2-type structure
| Autor: | Manfred Reehuis, Albrecht Mewis, A. Wurth, W. Schlabitz, C. Huhnt |
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| Rok vydání: | 1998 |
| Předmět: |
Quantum phase transition
Phase transition Materials science chemistry.chemical_element Thermodynamics Condensed Matter Physics Electronic Optical and Magnetic Materials Bond length Tetragonal crystal system chemistry Lattice (order) Electrical and Electronic Engineering Isostructural Europium Ternary operation |
| Zdroj: | Physica B: Condensed Matter. 252:44-54 |
| ISSN: | 0921-4526 |
| Popis: | The ThCr2Si2- type compounds EuFe2P2 and EuRu2P2 exhibit as a function of pressure continuous phase transitions which are accompanied by extremely strong changes of the lattice parameters and particularly of the P–P distance dP−P along the tetragonal c-axis. In the isostructural integralvalent LaT2P2 compounds similar phase transitions of second (T=Fe) and first order (T=Co) occur as a function of pressure indicating that the T element essentially determines the nature of the phase transition. The different types of phase transitions are explained phenomenologically. |
| Databáze: | OpenAIRE |
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