SPONTANEOUS STRAIN IN FERROELASTIC INCOMMENSURATE [N(CH3)(4)](2)CUCL4CRYSTALS

Authors
MUELLER V FUITH A FOUSEK J WARHANEK H BEIGE H
Citation
V. Mueller et al., SPONTANEOUS STRAIN IN FERROELASTIC INCOMMENSURATE [N(CH3)(4)](2)CUCL4CRYSTALS, Solid state communications, 104(8), 1997, pp. 455-458
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
104
Issue
8
Year of publication
1997
Pages
455 - 458
Database
ISI
SICI code
0038-1098(1997)104:8<455:SSIFI[>2.0.ZU;2-#
Abstract
The temperature dependence of spontaneous strain is investigated in th e ferroelastic lock-in phase of [N(CH3)(4)](2)CuCl4 crystals by therma l mechanical analysis. The critical index of the order parameter modul us is found to be beta =0.33. Considerable wall displacements have bee n detected for shear stress as small as sigma(p) =2.4kPa which indicat es that the mechanical pinning energy is extremely small. (C) 1997 Pub lished by Elsevier Science Ltd.