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Magnetoelectric perovskite (Bi0.5Pb0.5)(Fe0.5Zr0.5)O3: Preparation, structural and magnetic properties
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry. (strukturkemi)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry. (strukturkemi)
2010 (English)In: Solid State Sciences, ISSN 1293-2558, E-ISSN 1873-3085, Vol. 12, no 1, 115-122 p.Article in journal (Refereed) Published
Abstract [en]

The perovskite (Bi0.5Pb0.5)(Fe0.5Zr0.5)O3 was synthesized by solid-state reaction in an attempt to find magnetoelectric materials, in which ferroelectricity and ferromagnetism coexist. This complex perovskite has been studied by X-ray and neutron powder diffraction in combination with magnetic measurements. The compound crystallizes in the orthorhombic space group Pbam with a √2ap, b 2√2ap and c 2ap (with ap 4.057 Å). The field and temperature dependence of the magnetization combined with neutron diffraction data showed antiferromagnetic behavior with the Neel temperature, TN 450 K. Rietveld refinements of neutron powder diffraction data collected at different temperatures, between 10 and 700 K, have been carried out in order to extract information about the thermal evolution of the nuclear and magnetic structures. A distorted orthorhombic perovskite structure was found within the whole temperature interval. The Bi/Pb and Fe/Zr ions were found to be partially ordered over the perovskite A-site and disordered over the B-site. The neutron diffraction patterns of the (Bi0.5Pb0.5)(Fe0.5Zr0.5)O3 sample showed evidence of a long-range magnetic ordering below TN with a propagation vector k = (0,0,0) and an antiferromagnetic arrangement of the magnetic moments of the Fe3+ cations in the B-site. This is consistent with an Ay-type magnetic structure. The factors governing the structural and magnetic properties of (1 − x)BiFeO3xPbZrO3 solid solutions are discussed and compared with those of pure BiFeO3 and PbZrO3. A solid solution strategy for developing magnetoelectric properties in BiFeO3-based compounds is described, with the aim of realizing both a spontaneous polarization and magnetization at room temperature.

Place, publisher, year, edition, pages
2010. Vol. 12, no 1, 115-122 p.
Keyword [en]
Ceramics, Electronic materials, Neutron scattering, Crystal structure, Magnetic properties
National Category
Chemical Sciences Engineering and Technology
Research subject
Inorganic Chemistry; Engineering Science with specialization in Solid State Physics
Identifiers
URN: urn:nbn:se:uu:diva-120709DOI: 10.1016/j.solidstatesciences.2009.10.015ISI: 000274547900018OAI: oai:DiVA.org:uu-120709DiVA: diva2:303871
Available from: 2010-03-16 Created: 2010-03-16 Last updated: 2017-12-12

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Ivanov, SergeyNordblad, PerTellgren, Roland

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