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Title: Multiferroicity in polarized single-phase Bi₀.₈₇₅Sm₀.₁₂₅FeO₃ceramics
Authors: Yuan, G. L.
Or, Derek Siu-wing
Subjects: Multiferroics
Bismuth compounds
Samarium compounds
X-ray diffraction
Crystal structure
Space groups
Dielectric polarisation
Long-range order
Ferroelectric ceramics
Canted spin arrangements
Antiferromagnetic materials
Magnetoelectric effects
Neel temperature
Issue Date: 15-Jul-2006
Publisher: American Institute of Physics
Source: Journal of applied physics, 15 July 2006, v. 100, no. 2, 024109, p. 1-5.
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.
Rights: © 2006 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in G. L. Yuan & S. W. Or, J. Appl. Phys. 100, 024109 (2006) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.2220642
ISSN: 0021-8979 (print)
1089-7550 (online)
Appears in Collections:AP Journal/Magazine Articles

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