ELECTRON MICROSCOPY STUDY OF THE FERROELECTRIC DOMAINS AND DOMAIN WALL STRUCTURE IN Pb.52Ti.48O3
The crystallography of the domains and domain walls in PZT are studied using electron diffraction and transmission electron microscopy. Both 90{sup o} and 180{sup o} domains are observed and the 90{sup o} domains are shown to be deformation twins with displacement along <110> on {l_brace}110{r_brace}. The thickness of the 90{sup o} domain wall is determined to be {approx}< 100 {angstrom}. Leadon Zirconate Titanate (PZT) is a ferroelectric material at room temperature and it is used extensively in piezoelectric devices. Above its Curie temperature (375 C), PZT is a cubic solid solution of lead titanate and lead zirconate. It undergoes a phase transformation from cubic to tetragonal phase on cooling below the Curie temperature. The strain, resulting from this transformation is accommodated by the formation of twins. Each of the twin plates is a ferroelectric domain. These domains have been examined by etching technique or by replica technique, both of which cannot provide any crystallographic information about the structure. The purpose of the present study is to characterize the nature of the domains in PZT and also to study the structure of the domain walls using transmission electron microscopy methods.
- Research Organization:
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
- Sponsoring Organization:
- Materials Sciences Division
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 993749
- Report Number(s):
- LBL-11256
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 4 Vol. 52; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS
CRYSTALLOGRAPHY
CURIE POINT
DEFORMATION
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
ETCHING
FERROELECTRIC MATERIALS
PHASE TRANSFORMATIONS
PLATES
REPLICA TECHNIQUES
SOLID SOLUTIONS
THICKNESS
TITANATES
TRANSFORMATIONS
TRANSMISSION ELECTRON MICROSCOPY
ZIRCONATES