Title :
Influence of Ti on multiferroic properties of Bi0.8Ba0.2Fe1−xTixO3 ceramics
Author :
Gautam, Anamol ; Rangra, V.S. ; Uniyal, P. ; Yadav, K.L.
Author_Institution :
Dept. of Phys., Himachal Pradesh Univ., Shimla, India
Abstract :
Ti modified Bi0.8Ba0.2Fe1-xTixO3 (x = 0.1, 0.2, 0.3) ceramics were prepared by conventionalmethod based on the solid state reaction of mixed oxides. The crystal structures of the samples were identified as rhombohedral and relative dielectric constants of the samples increased gradually, while the loss tangents decreased with the increase of Ti content. An anomaly in the dielectric constant (ε) in the vicinity of the antiferromagnetic Néel temperature (TN) was observed. The room temperature magnetic hysteresis loops were not saturated and the magnetic moment was found to decrease with Ti ions doping. Maximum magnetization (2Mr) for x = 0.1 was 0.033emu/g. Ferroelectric hysteresis loops were observed with maximum remnant polarization (2Pr) = 18.64 μC/cm2 and coercivity (Ec) = 10.53kV/cm for x = 0.3. Ferroelectric and magnetic hysteresis loops measured at room temperature indicated the multiferroic behaviour.
Keywords :
Neel temperature; antiferromagnetic materials; barium compounds; bismuth compounds; coercive force; crystal structure; dielectric hysteresis; dielectric losses; doping; ferroelectric ceramics; ferroelectric coercive field; ferroelectric materials; magnetic hysteresis; magnetic moments; multiferroics; permittivity; remanence; Bi0.8Ba0.2Fe1-xTixO3; antiferromagnetic Neel temperature; ceramics; coercivity; crystal structure; dielectric constants; doping; ferroelectric hysteresis loops; loss tangents; magnetic moment; magnetization; multiferroic properties; remnant polarization; room temperature magnetic hysteresis; solid state reaction method; temperature 293 K to 298 K; Ceramics; Dielectric constant; Magnetic hysteresis; Magnetoelectric effects; Temperature measurement; Ceramics; Dielectric constant; Magnetization; Multiferroics;
Conference_Titel :
Applications of Ferroelectrics (ISAF/PFM), 2011 International Symposium on and 2011 International Symposium on Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1162-6
Electronic_ISBN :
978-1-4577-1161-9
DOI :
10.1109/ISAF.2011.6014158
