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Preparation, structural, dielectric and magnetic properties of LaFeO3-PbTiO3 solid solutions
- 1.0388221 - ÚJF 2013 RIV GB eng J - Journal Article
Ivanov, S. A. - Tellgren, R. - Porcher, F. - Ericsson, T. - Mosunov, A. - Beran, Přemysl - Korchagina, S. K. - Kumar, P. - Mathieu, R. - Nordblad, P.
Preparation, structural, dielectric and magnetic properties of LaFeO3-PbTiO3 solid solutions.
Materials Research Bulletin. Roč. 47, č. 11 (2012), s. 3253-3268. ISSN 0025-5408. E-ISSN 1873-4227
Institutional support: RVO:61389005
Keywords : ceramics * electronic materials * neutron scattering * X-ray diffraction * crystal structure * magnetic properties
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.913, year: 2012
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 Mossbauer 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.
Permanent Link: http://hdl.handle.net/11104/0217047
Number of the records: 1