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Preparation, structural, dielectric and magnetic properties of LaFeO3-PbTiO3 solid solutions
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 Chemistry - Ångström, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
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2012 (English)In: Materials research bulletin, ISSN 0025-5408, E-ISSN 1873-4227, Vol. 47, no 11, 3253-3268 p.Article in journal (Refereed) Published
Abstract [en]

Solid solutions of (1−x)LaFeO3–(x)PbTiO3 (0 < x < 1) have been prepared by conventional solid-state reaction. These complex perovskites have been studied by means of X-ray (XRPD) and neutron powder (NPD) diffraction, complemented with dielectric, magnetic, heat capacity and Mössbauer measurements. Complete solubility in the perovskite series was demonstrated. The NPD and XRPD patterns were successfully refined as orthorhombic (x ≤ 0.7) and tetragonal (x ≥ 0.8). A composition-driven phase transformation occurs within the interval 0.7 < x < 0.8. The samples with x < 0.5 showed evidence of long-range magnetic ordering with an G-type antiferromagnetic arrangement of the magnetic moments of the Fe3+ cations in the B-site with propagation vector k = (0,0,0). Based on the obtained experimental data, a combined structural and magnetic phase diagram has been constructed. The factors governing the structural, dielectric and magnetic properties of (1−x)LaFeO3–(x)PbTiO3 solid solutions are discussed, as well as their possible multiferroicity.

Place, publisher, year, edition, pages
2012. Vol. 47, no 11, 3253-3268 p.
National Category
Condensed Matter Physics Engineering and Technology
Research subject
Engineering Science with specialization in Solid State Physics
Identifiers
URN: urn:nbn:se:uu:diva-180261DOI: 10.1016/j.materresbull.2012.08.003ISI: 000311865200030OAI: oai:DiVA.org:uu-180261DiVA: diva2:548958
Available from: 2012-09-03 Created: 2012-09-03 Last updated: 2017-12-07Bibliographically approved

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Publisher's full texthttp://dx.doi.org/10.1016/j.materresbull.2012.08.003

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Ivanov, Sergey A.Tellgren, RolandEricsson, ToreAnil Kumar, PuriMathieu, RolandNordblad, Per

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