Superconducting depression in thin films of YBa2Cu3O7-δ based on the variation of the relative humidity and the time
Título del documento: Superconducting depression in thin films of YBa2Cu3O7-δ based on the variation of the relative humidity and the time
Revista: Superficies y vacío
Base de datos: PERIÓDICA
Número de sistema: 000395223
ISSN: 1665-3521
Autores: 1
1
2
1
1
1
3
Instituciones: 1Universidad del Valle, Cali, Valle del Cauca. Colombia
2Universidad Tecnológica de Pereira, Pereira, Risaralda. Colombia
3Instituto Politécnico Nacional, Centro de Investigación e Innovación Tecnológica, México, Distrito Federal. México
Año:
Periodo: Sep
Volumen: 20
Número: 3
Paginación: 6-10
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico
Resumen en inglés Thin films of YBa2Cu3O7-δ grown on SrTiO3 (100) single crystal substrates by sputtering DC technique to high oxygen pressures were put under different conditions of relative humidity from 24 to 100% and different times of exposition. The electrical, morphologic and structural characteristics of the films by means of curves R-T, atomic force microscopy (AFM) and X-ray diffraction (XRD) were analyzed. The effect on structural and transport properties with the environmental conditions of relative humidity and with time were systematically studied. Samples under relative humidity around 24% measured just later of deposition showed a critical temperature (TC) of 92 K, and thin films exposed around 90% of relative humidity with times greater to 104 s (1 day) showed a TC of 16 K, while samples under a relative humidity 100% do not showed the superconductive phase. The degradation's causes of superconductive properties in this system were investigated
Disciplinas: Física y astronomía,
Ingeniería
Palabras clave: Física,
Ingeniería de materiales,
Películas delgadas,
Microscopía de fuerza atómica,
Difracción de rayos X,
Humedad,
Materiales cerámicos,
Superconductividad,
Estado sólido,
Modificación de superficies
Keyword: Physics and astronomy,
Engineering,
Physics,
Materials engineering,
Thin films,
Atomic force microscopy,
X-ray diffraction,
Humidity,
Ceramic materials,
Superconductivity,
Solid state,
Surface modification
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