Thickness dependence on superconducting and structural properties of thin fese0,5te0,5 films
In the present work the influence of the layer thickness of FeSe0,5Te0,5 on the crystalline and superconducting properties of films deposited on iron (Fe) buffered MgAl2O4 substrates by pulsed laser deposition (PLD) is investigated. The superconducting layer thicknesses of the films prepared are ~55...
- Autores:
-
Rodríguez, Oscar
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2012
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/73578
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/73578
http://bdigital.unal.edu.co/38054/
- Palabra clave:
- Iron based superconductors
thin films
iron chalcogenides
Superconductores a base de cobre
películas delgadas
calcogenuros de hierro
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
| Summary: | In the present work the influence of the layer thickness of FeSe0,5Te0,5 on the crystalline and superconducting properties of films deposited on iron (Fe) buffered MgAl2O4 substrates by pulsed laser deposition (PLD) is investigated. The superconducting layer thicknesses of the films prepared are ~55nm and ~134nm. The film with thinner superconducting layer shows better texture properties (oriented growth) and lower surface roughness (RMS); verified by X ray diffraction and AFM respectively. This film shows a sharp transition to the superconducting state and a higher critical temperature in contradiction to the thicker one. The thickness effect on superconducting lattice strain is discussed. |
|---|