Skip to main content

Dielectric Characteristics of Perovskite-Structured High-Temperature Relaxor Ferroelectrics: The BiScO3–Pb(Mg1/3Nb2/3)O3–PbTiO3 Ternary System

Buy Article:

$43.00 plus tax (Refund Policy)

A new compositional family of relaxor ferroelectrics was investigated based on the high-temperature Bi(Me)O3–PbTiO3 ferroelectric perovskite family. Compositions were fabricated near an estimated morphotropic phase boundary (MPB) of the xBiScO3yPb(Mg1/3Nb2/3)O3zPbTiO3 (xBS–yPMN–zPT) ternary system exhibiting high-temperature relaxor properties of Tmax∼250°–350°C and max∼10 000–24 000 at 1 kHz. Analysis of the low-field a.c. permittivity by a Vogel–Fulcher type dependence enabled key parameters of activation energy, EA, and freezing temperature, Tf, to be determined. The remanent polarization was studied over a broad temperature range and was observed to show classical ferroelectric square loop hysteresis behavior at temperatures T<Tf while slim loop hysteresis behavior was observed at temperatures Tf<T<Tmax. Pyroelectric current measurements were made and integrated to determine macroscopic polarization-temperature dependence, and were in excellent agreement with the hysteresis data. The macroscopic polarization was found to drop off rapidly near the freezing temperature, Tf. At temperatures T>Tmax, the deviation temperature, TD, was obtained from Curie–Weiss analysis and found to be ∼600°C. A comparison of characteristic electrical properties was made between the high-temperature perovskite relaxors and the classical complex lead relaxor compound, Pb(Mg1/3Nb2/3)O3 (PMN).
No References
No Citations
No Supplementary Data
No Data/Media
No Metrics

Document Type: Research Article

Affiliations: 1: The Pennsylvania State University, University Park, Pennsylvania 16802 2: TRS Technologies Inc., 2820 East College Ave., State College, Pennsylvania 16801

Publication date: 2008-06-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more