Magnetoelectric and dielectric relaxation properties of the high Curie temperature composite Sr1.9Ca0.1NaNb5O15-CoFe2O4

W. C. Liu, Chee Leung Mak, K. H. Wong, C. Y. Lo, Siu Wing Or, W. Zhou, A. Hauser, F. Y. Yang, R. Sooryakumar

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


A magnetoelectric (ME) composite ceramic 0.6Sr1.9Ca0.1NaNb5O15-0.4CoFe2O4(SCNN-CFO) was prepared by a conventional solid state reaction method. Remarkable dielectric constant dispersion with a Curie temperature of 270 °C was observed. This relaxor composite exhibits ferroelectric as well as ferrimagnetic hysteresis loops at room temperature. A significant ME coupling effect was observed. On the basis of our studies, it is demonstrated that the lead-free high Curie temperature SCNN-CFO relaxor composite material can be used in the future development of ME devices.
Original languageEnglish
Article number125402
JournalJournal of Physics D: Applied Physics
Issue number12
Publication statusPublished - 21 Jun 2008

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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