Published December 28, 2015 | Version v1
Journal article Metadata-only

Electric-field-temperature phase diagram of Mn-doped Bi0.5(Na0.9K0.1)0.5TiO3 ceramics

Creators

  • 1. Institute of Materials Science, Technische Universität Darmstadt, Darmstadt 64287 (Germany)
  • 2. Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)
  • 3. Department of Materials Science, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen (Germany)

Description

An electric field–temperature (E-T) phase diagram for a lead-free 0.5 mol. % Mn-doped Bi(Na0.1K0.9)TiO3 ceramics was investigated. The x-ray diffraction, dielectric and polarization measurements revealed relaxor behavior and were used to characterize the stability regions of the non-ergodic relaxor, ergodic relaxor and electric field induced ferroelectric states. As indicated by the polarization–current density profiles, transformation between two electric fields, induced ferroelectric states with opposite polarization direction arise via a two-step process through an intermediate relaxor state. Interplay between the ferroelectric state conversion and intermediate relaxor state is governed by the dynamics of polarization relaxation. The presented E-T phase diagram revealed the effects of the applied electric field and temperature on stability regions. This is of special interest since the Bi0.5(Na0.1K0.9)0.5TiO3 ceramics were proposed as a potential piezoceramic material

Additional details

Identifiers

DOI
10.1063/1.4938759;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
107
Journal Issue
26
Journal Page Range
p. 262903-262903.5
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47056296
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
CERAMICS; CURRENT DENSITY; DOPED MATERIALS; ELECTRIC FIELDS; FERROELECTRIC MATERIALS; PHASE DIAGRAMS; POLARIZATION; RELAXATION; STABILITY; TITANATES; TITANIUM OXIDES; X-RAY DIFFRACTION
Descriptors DEC
CHALCOGENIDES; COHERENT SCATTERING; DIAGRAMS; DIELECTRIC MATERIALS; DIFFRACTION; INFORMATION; MATERIALS; OXIDES; OXYGEN COMPOUNDS; SCATTERING; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
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