ABSENCE OF INTERACTION BETWEEN FERROELECTRIC AND INCOMMENSURATE TRANSITIONS IN BA2NANB5(1-X)TA5XO15

Authors
MORI S YAMAMOTO N KOYAMA Y HAMAZAKI S TAKASHIGE M
Citation
S. Mori et al., ABSENCE OF INTERACTION BETWEEN FERROELECTRIC AND INCOMMENSURATE TRANSITIONS IN BA2NANB5(1-X)TA5XO15, Physical review. B, Condensed matter, 52(13), 1995, pp. 9117-9120
Citations number
24
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
52
Issue
13
Year of publication
1995
Pages
9117 - 9120
Database
ISI
SICI code
0163-1829(1995)52:13<9117:AOIBFA>2.0.ZU;2-K
Abstract
Features of both the ferroelectric and incommensurate transitions in B a2NaNb5(1-x)Ta5xO15 were investigated by means of a transmission elect ron microscope in order to find the relationship between these transit ions. An in situ observation of the transitions revealed that the ferr oelectric transition takes place around 373 K in x=0.57 while the inco mmensurate transition occurs around 543 K. Because the ferroelectric t ransition does not basically accompany a change in microstructures rel ated to the incommensurate lattice modulation, there is no interaction between these two transitions.