학술논문
Multiferroic (ferroelectro-magnetic) properties of bismuth ferrite lead titanate x(BiFeO3)-1-x(PbTiO3)
Document Type
Conference
Author
Source
2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on. :421-423 May, 2007
Subject
Language
ISSN
1099-4734
2375-0448
2375-0448
Abstract
(BiFeO 3 )-(PbTiO 3 ) is a ferroelectric material, that also demonstrates anti-ferromagnetism with weak ferromagnetism, at room temperature. The morphotropic phase boundary composition, 0.7BiFeO 3 -0.3PbTiO 3 , exhibits a ferroelectric T C of 635°C and a T N of 287°C. Presented here is a study of the ferromagnetic transition vs. composition, measured using neutron diffraction and magnetisation from AC susceptibility, as a function of temperature on sintered polycrystalline materials. The antiferromagnetic transition is observed to occur at significantly higher temperatures than previously reported. For 0.7BiFeO 3 - 0.3PbTiO 3 a Neél temperature of 330°C is recorded. Neutron data also indicates that T N is much less dependant on composition than previously documented.