Preparation, structural, dielectric and magnetic properties of LaFeO3PbTiO3 solid solutions
Abstract
Solid solutions of (1x)LaFeO3(x)PbTiO3 (0<x<1) have been prepared by conventional solidstate reaction. These complex perovskites have been studied by means of Xray (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 \leq 0.7) and tetragonal (x \geq 0.8). A compositiondriven phase transformation occurs within the interval 0.7<x<0.8. The samples with x<0.5 showed evidence of longrange magnetic ordering with an Gtype antiferromagnetic arrangement of the magnetic moments of the Fe3+ cations in the Bsite 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 (1x) LaFeO3  (x)PbTiO3 solid solutions are discussed, as well as their possible multiferroicity.
 Publication:

arXiv eprints
 Pub Date:
 August 2012
 arXiv:
 arXiv:1208.1577
 Bibcode:
 2012arXiv1208.1577I
 Keywords:

 Condensed Matter  Materials Science
 EPrint:
 33 pages, 15 figures