Temperature-dependent piezoelectric and dielectric properties of charge-ordered Lu 2Fe 2.1Mn 0.9O 7

Y. Chen, Jiyan Dai, K. Au, Kwok Ho Lam, Y. B. Qin, H. X. Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

Ferroelectric and piezoelectric properties of layered Lu2Fe2.1Mn0.9O7ceramic have been investigated by temperature-dependent piezoresponse force microcopy (PFM) and dielectric measurements. The PFM results illustrate the existence of piezoelectric properties and ferroelectric phase transition temperature of about 90 °C at which the piezoelectricity vanishes. This transition temperature is manifested by the appearance of a shoulder at about 90 °C in the temperature-dependent dielectric curve of the poled sample. A macro-to-micro domain transition is proposed to explain this ferroelectric phase transition. Besides, the ferroelectric properties of the Lu2Fe2.1Mn0.9O7ceramic are further demonstrated by the polarization-electric field hysteresis (P-E) loop measurement.
Original languageEnglish
Pages (from-to)54-56
Number of pages3
JournalMaterials Letters
Volume68
DOIs
Publication statusPublished - 1 Feb 2012

Keywords

  • Ceramics
  • Dielectrics
  • Ferroelectrics

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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