Date of Publication

1975

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Physics

Department

Physics

Language

English

Subjects

Crystals -- Defects

DOI

10.15760/etd.2187

Physical Description

1 online resource (91 p.)

Abstract

We examine the problem of the dynamics of a hexagonal close packed crystal with a single substitutional impurity. The effects of the mass and the force constant changes due to the introduction of the impurity atom are taken into account assuming nearest neighbor interactions under the harmonic approximation. Using Green’s function and group theoretical methods, the equations of motion for the perturbed normal modes are obtained in an exact form. The calculations are performed by allowing for very general force constant changes which can have noncentral as well as central contributions. The analytical expressions obtained expressions obtained by Mannheim and Cohen for cubic systems.

Rights

In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).

Comments

A thesis submitted in partial fulfillment of the requirements for the degree of Mater of Science in Physics

Persistent Identifier

http://archives.pdx.edu/ds/psu/14565

Download

Share

COinS