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Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
Published on: December 4, 2014
Procesos atomísticos en las primeras etapas del crecimiento de la película delgada
1Z. Y. Zhang is a research staff member in the Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6032, USA. E-mail: Zhangz@ornl.gov. M. G. Lagally is the E.W. Mueller Professor in the Departments of Materials Science and Engineering and Physics, University of Wisconsin, Madison, WI 53706, USA.
Science (New York, N.Y.)
|April 18, 1997
Resumen
La comprensión de los mecanismos atómicos del crecimiento de la película delgada, regida por la cinética y la termodinámica, permite un control preciso de las propiedades de la película. Este estudio explora los factores cinéticos clave que influyen en la formación de películas a partir de la deposición de la fase gaseosa.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Ciencias de la superficie Ciencias de la superficie.
- Física Física es la física de las cosas.
Sus antecedentes:
- El crecimiento de la película delgada de la fase gaseosa es un proceso complejo y no equilibrado.
- El control de las propiedades de la película requiere comprender la interacción entre la cinética y la termodinámica.
Objetivo del estudio:
- Explorar los mecanismos cinéticos a escala atómica que gobiernan el crecimiento de la película delgada.
- Proporcionar información para manipular la cinética del crecimiento y seleccionar los modos de crecimiento deseados.
Principales métodos:
- Análisis de los mecanismos atómicos, incluida la difusión de átomos, la nucleación y el transporte de masas.
- Exploración teórica de los factores cinéticos en la deposición de la fase gaseosa.
Principales resultados:
- Examen detallado de la difusión de adatom en terrazas, escalones y bordes de las islas.
- Investigación sobre la dinámica de la nucleación y los procesos de unión y separación de los átomos.
- Consideración del transporte de masas entre capas y su papel en la formación de la película.
Conclusiones:
- Una comprensión completa de los mecanismos cinéticos atómicos es crucial para un control preciso sobre el crecimiento de la película delgada.
- La manipulación de estos mecanismos permite la selección de modos de crecimiento específicos y propiedades de película a medida.
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