Synthesis and multiferroic properties of Bi{sub 0.8}A{sub 0.2}FeO{sub 3} (A=Ca,Sr,Pb) ceramics

Journal Article · Mon Jun 11 04:00:00 EDT 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2747665· OSTI ID:20971966

Khomchenko, V A; Kiselev, D A; Vieira, J M; Kholkin, A L; Sa, M A; Pogorelov, Y G ^[1]

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1. Department of Ceramics and Glass Engineering, University of Aveiro, 3810-193 Aveiro (Portugal) and CICECO, University of Aveiro, 3810-193 Aveiro (Portugal)

Bi{sub 1-x}A{sub x}FeO{sub 3} ceramics (A=Ca,Sr,Pb) were sintered by conventional mixed oxide route. The crystallographic structure of all samples is characterized by the rhombohedral symmetry (space group R3c). The existence of switchable ferroelectric polarization is verified by piezoresponse force microscopy that is proven to be a useful technique in semi-insulating ferroelectrics. Magnetic properties of Ca and Sr-doped ceramics are found to reproduce the antiferromagnetic behavior of undoped BiFeO{sub 3} without any enhancement of the magnetization. On the contrary, Pb-doped compound demonstrates appearance of a weak ferromagnetism. It is thus shown that Pb doping of BiFeO{sub 3} is a promising way for preparing multiferroic materials.

• OSTI ID: 20971966
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 24 Vol. 90; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIFERROMAGNETIC MATERIALS
ANTIFERROMAGNETISM
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CERAMICS
CRYSTALLOGRAPHY
CRYSTALS
DOPED MATERIALS
FERROELECTRIC MATERIALS
FERROMAGNETIC MATERIALS
FERROMAGNETISM
IRON OXIDES
LEAD COMPOUNDS
MAGNETIC PROPERTIES
MAGNETIZATION
PIEZOELECTRICITY
SINTERING
SPACE GROUPS
STRONTIUM COMPOUNDS
TRIGONAL LATTICES