Revista: | Superficies y vacío |
Base de datos: | PERIÓDICA |
Número de sistema: | 000404705 |
ISSN: | 1665-3521 |
Autors: | Zehe, A1 Ramírez, A2 Tempel, A3 Torres Tapia, E4 |
Institucions: | 1Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Físico Matemáticas, Puebla. México 2Benemérita Universidad Autónoma de Puebla, Instituto de Ciencias, Puebla. México 3University of Applied Sciences, Senftenberg, Brandeburgo. Alemania 4Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Físicas, Lima. Perú |
Any: | 2002 |
Període: | Dic |
Volum: | 15 |
Paginació: | 40-44 |
País: | México |
Idioma: | Inglés |
Tipo de documento: | Artículo |
Enfoque: | Analítico |
Resumen en inglés | A rhombohedral symmetry of CaF2, grown by MBE on (111)Si to a thickness of 30 nm was found with the help of RBS and ion channeling measurements. This symmetry is caused by hampered stress relaxation and the build-up of planar strain of tensile type due to different thermal expansion coefficients of the deposit and the substrate on the one hand, and dislocation pinning during the cooling process of the sample, on the other. The strain field forces the epitaxial film to a rhombohedral instead of cubic structure, and a total misfit of 1.2% is generated, instead of the common 0.6% |
Disciplines | Física y astronomía, Ingeniería |
Paraules clau: | Física de materia condensada, Ingeniería de materiales, Películas delgadas, Fluoruro de calcio, Haces moleculares, Epitaxia |
Keyword: | Physics and astronomy, Engineering, Condensed matter physics, Materials engineering, Thin films, Calcium fluoride, Molecular beams, Epitaxy |
Text complet: | Texto completo (Ver PDF) |