LPF-doped core-shell structure based CFO/PLZT 0-3 magnetoelectric composite ceramics

Dong Liang Shi, Kwok Ho Lam, Kun Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)

Abstract

Using LiF and PbF2(mole ratio 1:1, LPF) as sintering additives, the xCoFe2O4/(1 - x) Pb0.9025La0.065(Zr0.58Ti0.42)0.975Nb0.02O3[x = 0.1, 0.2, 0.3, and 0.4 in weight] (abbreviate as CFO/PLZT) 0-3 magnetoelectric (ME) composite ceramics were developed via a liquid phase sintering technique. A ZrO2layer was coated on the CFO particles via a sol-gel method in order to inhibit the diffusion of Fe3+and Co2+ions from the ferrite CFO phase to the ferroelectric PLZT phase. With using 6 wt% additives of LPF, dense composite ceramics can be obtained in a sintering temperature region of 1000-1150 °C for 30 min. Moreover, overall performance of the ceramics with relatively low CFO content (x = 0.2) has been optimized. The effects of CFO content and sintering temperature on micromorphology, crystalline structure, piezoelectric, dielectric, and ME properties were investigated. It was found that the 0.2CFO/0.8PLZT composite ceramics exhibited a d33of 80 pC/N and a ME coefficient of 102 mV/Oe cm at 215 kHz.
Original languageEnglish
Pages (from-to)485-490
Number of pages6
JournalJournal of Alloys and Compounds
Volume617
DOIs
Publication statusPublished - 25 Dec 2014

Keywords

  • Co-fired ceramics
  • Core-shell structure
  • Magnetoelectric (ME) effect
  • Multiferroic composites
  • Piezoelectric properties

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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