tema02 - Física del Estado Sólido F. D–Adame JJ J N I...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Física del Estado Sólido F. D–Adame JJ J N I II 1/16 JJ J N I II 1/16 Tema 2 Enlace cristalino Física del Estado Sólido F. D–Adame JJ J N I II 2/16 JJ J N I II 2/16 Caracter´ ısticas generales del enlace cristalino Energ´ ıa electrost´ atica y energ´ ıa de punto cero. Energ´ ıa de cohesi´ on: Energ´ ıa liberada al formarse el cristal a partir de los ´ atomos constituyentes aislados. Elemento Vecinos pr´ oximos ( ˚ A) E. cohesi´ on (eV/´ atomo) T. fusi´ on (K) Ne 3 , 13 , 020 24 Ar 3 , 76 , 080 84 Kr 4 , 01 , 116 117 Xe 4 , 35 , 170 161 Física del Estado Sólido F. D–Adame JJ J N I II 3/16 JJ J N I II 3/16 Tipos de enlaces cristalinos Van der Waals (gases nobles) I´onico (ClNa) Covalente (diamante) Met´ alico (Au) Física del Estado Sólido F. D–Adame JJ J N I II 4/16 JJ J N I II 4/16 Cristales de gases inertes ´ Atomos de capas cerradas. Interacci´on atractiva a larga distancia (Van de Waals). Interacci´on repulsiva a corta distancia (Principio de Pauli). Potencial de Lennard-Jones U ( R ) = 4 U " σ R 12- σ R 6 # Elemento U ( × 10- 16 erg) σ ( ˚ A) Ne 50 2 , 74 Ar 167 3 , 40 Kr 225 3 , 65 Xe 320 3 , 98 Física del Estado Sólido F. D–Adame JJ J N I II 5/16 JJ J N I II 5/16 Interacci´ on de Van der Waals H = H 1 + H 2 + H int H i = p 2 i 2 m + 1 2 kx 2 i i = 1 , 2 ω = p k/m H int = e 2 R + e 2 R + x 2- x 1- e 2 R- x 1- e 2 R + x 2 ' -...
View Full Document

This note was uploaded on 09/21/2011 for the course PHYSICS 101 taught by Professor Wormer during the Spring '08 term at Aarhus Universitet.

Page1 / 16

tema02 - Física del Estado Sólido F. D–Adame JJ J N I...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online