Engineered domain configuration and piezoelectric energy harvesting in 0.7Pb(Mg 1/3Nb 2/3)O 3-0.3PbTiO 3 single crystals

Hyun Cheol Song, Chong Yun Kang, Seok Jin Yoon, Dae Yong Jeong

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The performance of cantilever piezoelectric energy harvesters using three types of piezoelectric materials, relaxor ferroelectric 0.7Pb(Mg 1/3Nb 2/3)O 3-0.3PbTiO 3 (PMN-PT) single crystals oriented along the <110> and <001> directions, and a PZT-based ceramic, were investigated. The <110> and <001> oriented PMN-PT single crystals, which have a rhombohedral phase and spontaneous polarization along the <111> direction, presented electromechanical coupling factor k31's of 0.78 and 0.42, respectively. The cantilever-type energy harvester operated by 31 resonance mode generated a larger output power of 1.07 mW for the <110> oriented PMN-PT single crystal compared to those of the other materials. The effective electromechanical coupling factor of the piezoelectric energy harvester with the <110> oriented crystal also reached 0.25, not achievable with the other piezoelectric materials. These results demonstrate that the domain engineering of the piezoelectric single crystals can provide higher design flexibility for a tiny energy harvester.

Original languageEnglish
Pages (from-to)499-503
Number of pages5
JournalMetals and Materials International
Volume18
Issue number3
DOIs
Publication statusPublished - 2012 Jun 1
Externally publishedYes

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Keywords

  • Compression test
  • Crystal growth
  • Domain
  • Ferroelectric materials
  • Piezoelectric energy harvesting

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Mechanics of Materials
  • Materials Chemistry

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