Magnetic phases of bismuth ferrite

Scott, J. F. (2009) Magnetic phases of bismuth ferrite. Journal of Magnetism and Magnetic Materials, 321 (11). pp. 1689-1691. DOI

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We have recently shown that BiFeO3 has at least four different magnetic phases, contrary to the conventional wisdom. Below room temperature it undergoes spin reorientation transitions at T2=200 K and T1=140 K analogous to those in orthoferrites; and above room temperature it undergoes a structural transition near 185°C first reported by Polomska et al. This may help explain the apparent linear magnetoelectric effect at 20°C reported by D. Lebeugle et al. [Phys. Rev. Lett. 100, 227602 (2008)] which is nominally forbidden due to the long wavelength cycloidal spin structure assumed. We also find evidence of an unusual acentric spin glass below ca. 200 K, related not to TN but to T1 and T2.

Item Type: Article
Uncontrolled Keywords: 08AREP; IA57;
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Journal or Publication Title: Journal of Magnetism and Magnetic Materials
Volume: 321
Page Range: pp. 1689-1691
Identification Number:
Depositing User: Sarah Humbert
Date Deposited: 07 May 2009 11:56
Last Modified: 23 Jul 2013 09:54

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