ON THE THICKNESS OF FERROELASTIC TWIN WALLS IN LEAD PHOSPHATE PB-3(PO4)(2) A X-RAY-DIFFRACTION STUDY

Authors
WRUCK B SALJE EKH ZHANG M ABRAHAM T BISMAYER U
Citation
B. Wruck et al., ON THE THICKNESS OF FERROELASTIC TWIN WALLS IN LEAD PHOSPHATE PB-3(PO4)(2) A X-RAY-DIFFRACTION STUDY, Phase transitions, 48(1-3), 1994, pp. 135-148
Citations number
22
Categorie Soggetti
Crystallography,"Physics, Condensed Matter
Journal title
Phase transitions → ACNP
ISSN journal
01411594
Volume
48
Issue
1-3
Year of publication
1994
Part
B
Pages
135 - 148
Database
ISI
SICI code
0141-1594(1994)48:1-3<135:OTTOFT>2.0.ZU;2-O
Abstract
The effective thickness of ferroelastic twin-walls (W-walls) in Pb-3(P O4)(2) at room temperature (approximate to 0.7 T-c) was determined by X-ray diffraction. The diffraction profiles were analysed using a wall profile e=e(0) tanh x/W where W is the effective wall thickness inclu ding the effects of wall bending and surface relaxations. The experime ntal value W is around 10 unit cells which is larger than expected fro m standard renormalization arguments. The limitations of such experime ntal studies are discussed.