Multiferroicity in polarized single-phase Bi0.875Sm 0.125FeO3 ceramics

G. L. Yuan, Siu Wing Or

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Abstract

Single-phase Bi0.875Sm0.125FeO3ceramics were prepared, and their crystal structure and multiferroic properties were studied. The triclinic structure with P1 space group was confirmed in the ceramics by refining the x-ray diffraction data. Large piezoelectric d33coefficient of 29 pC/N, together with high remnant polarization of 15.09 μC/cm2, was measured at room temperature, suggesting the existence of long-range ferroelectric order on a macroscopic scale. The observed small remnant magnetization of 0.071 emu/g at room temperature as a result of the collapse of the space-modulated spin structure indicated the presence of long-range canted antiferromagnetic order on a macroscopic scale. The coexistence of the long-range ferroelectric and canted antiferromagnetic orders allowed the magnetoelectric effect below the antiferromagnetic Néel temperature of 265 °C near which magnetoelectric coupling was obvious.
Original languageEnglish
Article number024109
JournalJournal of Applied Physics
Volume100
Issue number2
DOIs
Publication statusPublished - 11 Aug 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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