OBSERVATION OF LATTICE MELTING AT THE FERROELASTIC PHASE-TRANSITION IN NA2CO3

Authors
HARRIS MJ COWLEY RA SWAINSON IP DOVE MT
Citation
Mj. Harris et al., OBSERVATION OF LATTICE MELTING AT THE FERROELASTIC PHASE-TRANSITION IN NA2CO3, Physical review letters, 71(18), 1993, pp. 2939-2942
Citations number
13
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
71
Issue
18
Year of publication
1993
Pages
2939 - 2942
Database
ISI
SICI code
0031-9007(1993)71:18<2939:OOLMAT>2.0.ZU;2-O
Abstract
A neutron powder diffraction study of the m = 2 ferroelastic phase tra nsition at 755 K in Na2CO3 is presented, showing the first occurrence of ideal lattice melting. A detailed analysis of the profiles of the d iffraction peaks shows a striking broadening which develops close to T (c), consistent with recent theoretical predictions for this type of t ransition.