PMN-PT single crystal and Terfenol-D alloy magnetoelectric laminated composites for electromagnetic device applications

Yaojin Wang, Kwok Fung Cheung, Siu Wing Or, Helen Lai Wa Chan, Haosu Luo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

Magnetoelectric laminated composites of a length-magnetized magnetostrictive Tb0.3Dy0.7Fe1.92(Terfenol-D) alloy plate sandwiched between two thickness-polarized, electro-parallel- connected piezoelectric 0.7Pb (Mg1/3Nb2/3)O3-0.3PbTiO3(PMN-PT) single crystal plates were fabricated and their converse magnetoelectric properties were evaluated. An electromagnetic control device using a laminated composite as the control element and an Alnico biasing magnet, two Mn-Zn F-yokes and a Mu-metal movable plate as the magnetic circuit was developed and characterized. The distribution of the dc magnetic flux lines and magnetic inductions of the device were analyzed using a finite element method. The quasistatic and dynamic magnetic inductions of the device were measured, together with the generative forces. The results revealed that the device has linear voltagecontrolled magnetic inductions in excess of 0.6 G/V with flat responses in the measured frequency range of 0.1-40 kHz and large generative forces over 0.7 N at 160 V at the designated gaps of 1.0-1.2 mm. This coil-free device could be useful in broadband and precision magnetic flux/force control applications with negligible Joule heating losses.
Original languageEnglish
Pages (from-to)540-544
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume116
Issue number1352
DOIs
Publication statusPublished - 1 Jan 2008

Keywords

  • Converse magnetoelectric effect
  • Electromagnetic control device
  • Magnetoelectric laminated composite
  • Magnetostrictive alloy
  • Piezoelectric single crystal

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this