Title :
Ferroelectric and magnetic phase transitions in multiferroic PbFe0.5Ta0.5O3-PbTiO3 solid solutions
Author :
Blazhevich, A.V. ; Raevski, I.P. ; Kubrin, S.P. ; Sitalo, E.I. ; Raevskaya, S.I. ; Titov, V.V. ; Sarychev, D.A. ; Malitskaya, M.A. ; Zakharchenko, I.N.
Author_Institution :
Res. Inst. of Phys. & Phys. Dept., Southern Fed. Univ., Rostov on Don, Russia
Abstract :
Dielectric, X-ray, piezoelectric and Mossbauer studies of highly-resistive Li-doped (1-x)PbFe0.5Ta0.5O3-(x)PbTiO3 ceramics from the 0<; x <;0.3 range fabricated by solid state synthesis and usual sintering have been carried out. Addition of PbTiO3 to PbFe0.5Ta0.5O3 increases the temperature Tm of the permittivity maximum, decreases the diffusion of this maximum and lowers the Neel temperature TN. However above a certain compositional threshold fast lowering of TN stops and a new magnetic state with comparatively high (~50 K) transition temperature becomes stable in a rather wide compositional range.
Keywords :
Mossbauer effect; Neel temperature; X-ray diffraction; diffusion; ferroelectric ceramics; ferroelectric transitions; lead compounds; lithium; magnetic transitions; multiferroics; permittivity; sintering; solid solutions; Mossbauer spectra; Neel temperature; PbFe0.5Ta0.5O3-PbTiO3:Li; X-ray diffraction; compositional threshold; dielectric properties; diffusion; ferroelectric phase transitions; highly-resistive ceramics; magnetic phase transitions; magnetic state; multiferroic solid solutions; permittivity; sintering; solid state synthesis; Ceramics; Dielectrics; Magnetoelectric effects; Solids; Temperature dependence; Temperature distribution; Temperature measurement; Mössbauer effect; lead iron tantalate; multiferroics; phase transitions; solid solutions;
Conference_Titel :
Applications of Ferroelectrics held jointly with 2012 European Conference on the Applications of Polar Dielectrics and 2012 International Symp Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (ISAF/ECAPD/PFM), 2012 Intl Symp
Conference_Location :
Aveiro
Print_ISBN :
978-1-4673-2668-1
DOI :
10.1109/ISAF.2012.6297783
