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Title: Orthorhombic-tetragonal phase coexistence and enhanced piezo-response at room temperature in Zr, Sn, and Hf modified BaTiO{sub 3}

The effect of Zr, Hf, and Sn in BaTiO{sub 3} has been investigated at close composition intervals in the dilute concentration limit. Detailed structural analysis by x-ray and neutron powder diffraction revealed that merely 2 mol. % of Zr, Sn, and Hf stabilizes a coexistence of orthorhombic (Amm2) and tetragonal (P4mm) phases at room temperature. As a consequence, all the three systems show substantial enhancement in the longitudinal piezoelectric coefficient (d{sub 33}), with Sn modification exhibiting the highest value ∼425 pC/N.
Authors:
; ;  [1] ;  [2]
  1. Department of Materials Engineering, Indian Institute of Science, Bangalore, Karnataka (India)
  2. Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM II), Technische Universität München, Lichtenbergestrasse 1, D-85747 Garching b. München (Germany)
Publication Date:
OSTI Identifier:
22303867
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 25; Other Information: (c) 2014 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; BARIUM COMPOUNDS; HAFNIUM ADDITIONS; MODIFICATIONS; NEUTRON DIFFRACTION; ORTHORHOMBIC LATTICES; PIEZOELECTRICITY; TEMPERATURE RANGE 0273-0400 K; TETRAGONAL LATTICES; TIN ADDITIONS; TITANATES; X RADIATION; ZIRCONIUM ADDITIONS