PROPERTIES OF ACTIVATED STATES OF OXYGEN AND CARBON-ATOMS DURING DIFFUSION IN ALPHA-TI

Authors
VYKHODETS VB FISHMAN AY
Citation
Vb. Vykhodets et Ay. Fishman, PROPERTIES OF ACTIVATED STATES OF OXYGEN AND CARBON-ATOMS DURING DIFFUSION IN ALPHA-TI, JETP letters, 68(6), 1998, pp. 539-543
Citations number
8
Categorie Soggetti
Physics
Journal title
JETP letters → ACNP
ISSN journal
00213640
Volume
68
Issue
6
Year of publication
1998
Pages
539 - 543
Database
ISI
SICI code
0021-3640(1998)68:6<539:POASOO>2.0.ZU;2-0
Abstract
Activated energy states of interstitial atoms in alpha-Ti crystals are investigated. Previous precision experiments on the anisotropy of the diffusion coefficients D-zz /D-xx in this system revealed that d(D-zz /D-xx)/dT has different signs for oxygen and carbon. It is shown that the anomalous positive sign of the effect for carbon atoms is due to t he presence of a double-well potential for a diffusing atom at the sad dle points. (C) 1998 American Institute of Physics. [S0021-3640(98)013 18-8]