IN ONE-STEP FROM KCL TO YBA2CU3O7 CRYSTAL-GROWTH - UNDERSTANDING OF DENDRITIC MORPHOLOGY IN CRYSTALS

Citation
M. Ausloos et al., IN ONE-STEP FROM KCL TO YBA2CU3O7 CRYSTAL-GROWTH - UNDERSTANDING OF DENDRITIC MORPHOLOGY IN CRYSTALS, Philosophical magazine letters, 73(3), 1996, pp. 101-105
Citations number
7
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
09500839
Volume
73
Issue
3
Year of publication
1996
Pages
101 - 105
Database
ISI
SICI code
0950-0839(1996)73:3<101:IOFKTY>2.0.ZU;2-Y
Abstract
A dendritic morphology of crystals is often encountered in nature and seems to be a universal structure for systems grown from supersaturate d solutions such as KCl or NaCl. The observation of similar dendrites in bulk superconducting YBa2Cu3O7 covalent material leads us to correl ate the cases. From a simple new kinetics mechanism, the understanding of such a crystal-growth peculiarity is discussed. The kinetic mechan ism condition for the occurrence of dendritic shapes of growing crysta ls from multiphase systems is given through a relationship between the velocity of the growth front and classical thermodynamical quantities . Some simulated systems illustrate the observed features.