skip to main content

Title: Electric field-induced phase transitions in Li-modified Na{sub 0.5}K{sub 0.5}NbO{sub 3} at the polymorphic phase boundary

The electric field-induced phase transitions in Li-modified Na{sub 0.5}K{sub 0.5}NbO{sub 3} at the polymorphic phase boundary (PPB) were observed using in situ X-ray diffraction. The ratio of monoclinic to tetragonal phase fraction was used as an indicator of the extent and reversibility of the phase transitions. The reversibility of the phase transition was greater in compositions further from the PPB. These results demonstrate that the field-induced phase transition is one of the origins of high piezoelectric properties in lead-free ferroelectric materials.
Authors:
;  [1] ;  [2] ;  [3] ; ;  [4] ;  [5]
  1. Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States)
  2. (United States)
  3. Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611 (United States)
  4. School of Ceramic Engineering, Institute of Engineering, Suranaree University of Technology, Nakorn Ratchasima 30000 (Thailand)
  5. Program in Materials Science, Faculty of Science, Maejo University, Chiang Mai 50290 (Thailand)
Publication Date:
OSTI Identifier:
22412825
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELECTRIC FIELDS; FERROELECTRIC MATERIALS; LITHIUM COMPOUNDS; MONOCLINIC LATTICES; NIOBATES; PHASE TRANSFORMATIONS; PIEZOELECTRICITY; POTASSIUM COMPOUNDS; SODIUM COMPOUNDS; TETRAGONAL LATTICES; X-RAY DIFFRACTION