Pr doped bismuth ferrite ceramics with enhanced multiferroic properties

• Published in: Journal of physics. Condensed matter Vol. 21; no. 40; pp. 405901 - 405901 (6)
• Main Authors: Uniyal, P, Yadav, K L
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 07.10.2009; Institute of Physics
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dielectric properties of solids and liquids; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Domain effects, magnetization curves, and hysteresis; Domain structure; hysteresis; Exact sciences and technology; Ferroelectricity and antiferroelectricity; Magnetic properties and materials; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; Magnetomechanical and magnetoelectric effects, magnetostriction; Permittivity (dielectric function); Physics; Electrical conductivity; Doping; Magnetic field effects; Magnetic moments; Magnetic hysteresis; XRD; Ferrites; Ferroic material; Dielectric polarization; Magnetoelectric effects; Solid state reaction; Chemical composition; Permittivity; Ferroelectric hysteresis
• ISSN: 0953-8984; 1361-648X
• DOI: 10.1088/0953-8984/21/40/405901

Pr modified Bi(0.9-x)La(0.1)Pr(x)FeO(3) (BLPFO-x, x = 0, 0.1 and 0.2) ceramics were prepared by the conventional method based on the solid state reaction of mixed oxides and a detailed study of electrical and magnetic properties of Pr modified bismuth ferrite (BLPFO) is reported. X-ray analysis shows the formation of a bismuth ferrite rhombohedral phase. Pr doping significantly increases the resistivity and leads to a successful observation of electrical polarization hysteresis loops. All the samples have been found to possess a spontaneous magnetic moment at room temperature which increases further at low temperatures. The strong dependence of remnant polarization and dielectric constant on the strength of magnetic field is a direct evidence of magnetoelectric coupling in BLPFO-2 ceramics.