Published May 15, 2006 | Version v1
Journal article Metadata-only

180 deg. domain structure and its evolution in Ca0.28Ba0.72Nb2O6 ferroelectric single crystals of tungsten bronzes structure

Creators

  • 1. Institute of Crystal Materials, Sandong University, Jinan 250100 (China)
  • 2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (China)
  • 3. Department of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, (China) and Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (CN)

Description

Ferroelectric domain structure and its evolution in uniaxial relaxor Ca0.28Ba0.72Nb2O6 single crystals were investigated using transmission electron microscopy. It was found that there exists a high density of 180 deg. domain walls in the crystals. The domains appear predominantly spike shaped along the polar axis and have a typical diameter of 50-500 nm. Domain wall motion was occasionally induced by electron beam irradiation. Macrodomains-to-microdomains switching has been observed corresponding to the normal-to-relaxor ferroelectrics transition during an in situ heating experiments. At temperature just below ferroelectric phase transition temperature TC, zero-field-cooled needlelike nanodomains were also observed

Additional details

Identifiers

DOI
10.1063/1.2203751;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
88
Journal Issue
20
Journal Page Range
p. 201906-201906.3
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37083603
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM COMPOUNDS; CALCIUM COMPOUNDS; CRYSTAL GROWTH; DOMAIN STRUCTURE; ELECTRON BEAMS; FERROELECTRIC MATERIALS; HEATING; IRRADIATION; MONOCRYSTALS; NIOBIUM OXIDES; PHASE TRANSFORMATIONS; TRANSITION TEMPERATURE; TRANSMISSION ELECTRON MICROSCOPY; TUNGSTEN BRONZE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ALLOYS; BEAMS; CHALCOGENIDES; COPPER ALLOYS; COPPER BASE ALLOYS; CRYSTALS; DIELECTRIC MATERIALS; ELECTRON MICROSCOPY; LEPTON BEAMS; MATERIALS; MICROSCOPY; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PARTICLE BEAMS; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; TUNGSTEN ALLOYS

Optional Information

Notes
(c) 2006 American Institute of Physics