BROWSE

Related Researcher

Author's Photo

Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics

ITEM VIEW & DOWNLOAD

Frequency-dependence of large-signal properties in lead-free piezoceramics

Cited 8 times inthomson ciCited 7 times inthomson ci
Title
Frequency-dependence of large-signal properties in lead-free piezoceramics
Author
Dittmer, RobertJo, WookAulbach, EmilGranzow, TorstenRoedel, Juergen
Keywords
Characteristic parameter; Coercive values; Dielectric permittivities; Elevated temperature; Ergodicity; Ferroelectric state; Field-induced phase transition; Frequency dependence; Frequency dispersion; Frequency-dependent; Hysteresis measurements; Large-signals; Lead free piezoceramics; Measurement frequency; Random fields; Relaxors; Temperature dependent; TiO
Issue Date
2012-07
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF APPLIED PHYSICS, v.112, no.1, pp. -
Abstract
The dependence of large signal properties of (1-x)(0.81Bi 1/2Na 1/2TiO 3-0.19Bi 1/2K 1/2TiO 3)-xBi(Zn 1/2Ti 1/2)O 3 with x 0.02, 0.03, and 0.04 on the measurement frequency was investigated for a wide range of frequencies from 0.1 Hz to 100 Hz. A significant frequency dispersion in the characteristic parameters representatively maximum and coercive values was denoted. On extension with the temperature dependent dielectric permittivity measurement, it was shown that the observed frequency dependence is primarily correlated with the dynamics of field-induced phase transition from a relaxor state to a long-range ferroelectric state. Increasing the substitutional disorder introduced by Bi(Zn 1/2Ti 1/2)O 3 addition was demonstrated to pronounce the frequency dependence. It was proposed that the change be due to the increase in random fields and consequent dominance of ergodicity, based on the frequency-dependent hysteresis measurements at an elevated temperature above so-called induced-ferroelectric-to-relaxor transition temperature.
URI
Go to Link
DOI
10.1063/1.4730600
ISSN
0021-8979
Appears in Collections:
MSE_Journal Papers
Files in This Item:
2-s2.0-84864118215.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU