TY - JOUR
T1 - Solid solutions of La-doped BiFeO3 obtained by the Pechini method with improvement in their properties
AU - García-Zaleta, D. S.
AU - Torres-Huerta, A. M.
AU - Domínguez-Crespo, M. A.
AU - Matutes-Aquino, J. A.
AU - González, A. M.
AU - Villafuerte-Castrejón, M. E.
N1 - Funding Information:
David S. García Zaleta is grateful for his postgraduate fellowship to CONACyT and SIP-IPN. The authors are also grateful for the financial support obtained through the SIP 2013-0599 Project , SNI-CONACyT and CONACyT-México by means of the CB-2009-132660 , CB-2009-133618 and CB-2011-01-166108 projects.
PY - 2014
Y1 - 2014
N2 - In this work, the synthesis of a series of solid solutions of Bi 1-xLaxFeO3 (BLFO) (0≤x≤ 0.15) obtained by the Pechini method is reported. The effects of lanthanum concentrations on the phase formation, grain size, as well as electric and magnetic properties were studied. The XRD results displayed the single BiFeO3 (BFO) phase for the different employed compositions. Crystal structure and cell parameters were refined by the Rietveld analysis, indicating that the obtained ceramics crystallized in the rhombohedral structure. The slight variation of the cell parameters and density values confirmed the partial substitution of Bi 3+ by La3+ into the perovskite A site like BiFeO 3 structure. Scanning electron microscopy was used to obtain the morphology of the different synthesized compounds, revealing a diminution of the grain sizes during the sintering process, attributed to the increment of La3+ content. Electric impedance spectroscopy (EIS) measurements were performed to evaluate the electric properties, thus showing a notable increase in the permittivity. The effect of incorporating lanthanum into the BFO structure enhanced ferroelectric and ferromagnetic properties.
AB - In this work, the synthesis of a series of solid solutions of Bi 1-xLaxFeO3 (BLFO) (0≤x≤ 0.15) obtained by the Pechini method is reported. The effects of lanthanum concentrations on the phase formation, grain size, as well as electric and magnetic properties were studied. The XRD results displayed the single BiFeO3 (BFO) phase for the different employed compositions. Crystal structure and cell parameters were refined by the Rietveld analysis, indicating that the obtained ceramics crystallized in the rhombohedral structure. The slight variation of the cell parameters and density values confirmed the partial substitution of Bi 3+ by La3+ into the perovskite A site like BiFeO 3 structure. Scanning electron microscopy was used to obtain the morphology of the different synthesized compounds, revealing a diminution of the grain sizes during the sintering process, attributed to the increment of La3+ content. Electric impedance spectroscopy (EIS) measurements were performed to evaluate the electric properties, thus showing a notable increase in the permittivity. The effect of incorporating lanthanum into the BFO structure enhanced ferroelectric and ferromagnetic properties.
KW - C. Electrical properties
KW - C. Magnetic properties
KW - Ceramics
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=84900472063&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2014.01.143
DO - 10.1016/j.ceramint.2014.01.143
M3 - Artículo
SN - 0272-8842
VL - 40
SP - 9225
EP - 9233
JO - Ceramics International
JF - Ceramics International
IS - 7 PART A
ER -