Structural Evolution and Electrical Properties of BaTiO3 Doped with Gd3+
Por:
Hernandez Lara, Juan Pablo, Perez Labra, Miguel, Barrientos Hernandez, Francisco Raul, Romero Serrano, Jose Antonio, Avila Davila, Erika Osiris, Thangarasu P., Hernandez Ramirez, Aurelio
Publicada:
1 mar 2017
Resumen:
BaTiO3 doped with Gd3+ (Ba1-x Gd-x Ti1-x/4 O-3) was synthesized using
the solid-state reaction method with x = 0.001, 0.003, 0.005, 0.01,
0.05, 0.1, 0.15, 0.20, 0.25, 0.30, and 0.35 Gd3+ (wt. %). The powders
were decarbonated at 900 degrees C and sintered at 1400 degrees C for 8
hours. The tetragonality of the synthesized Gd3+-doped BaTiO3 particles
was analyzed. XRD patterns and Raman spectra revealed that the crystal
phase of the obtained particles was predominately tetragonal BaTiO3; the
intensity of the Raman bands at 205 cm(-1), 265 cm(-1), and 304 cm(-1)
decreased when Gd3+ was increased. A secondary phase (Gd-2 Ti-2 O-7) was
found when the Gd3+ content was higher than 0.15 wt. %. The capacitance
of the sintering pellets was measured at 1 kHz; these values were used
to calculate the relative permittivity, the maximum permittivity values
were recorded for the samples with x = 0.001, 0.005, and 0.1.
Filiaciones:
Hernandez Lara, Juan Pablo:
Autonomous Univ Hidalgo State, Acad Area Earth Sci & Mat, Rd Pachuca Tulancingo Km 4-5, Mineral De La Reforma 42184, Hidalgo, Mexico
Perez Labra, Miguel:
Autonomous Univ Hidalgo State, Acad Area Earth Sci & Mat, Rd Pachuca Tulancingo Km 4-5, Mineral De La Reforma 42184, Hidalgo, Mexico
Barrientos Hernandez, Francisco Raul:
Autonomous Univ Hidalgo State, Acad Area Earth Sci & Mat, Rd Pachuca Tulancingo Km 4-5, Mineral De La Reforma 42184, Hidalgo, Mexico
Romero Serrano, Jose Antonio:
UPALM, ESIQIE IPN, Dept Met & Mat, San Pedro Zacatenco 07738, Mexico
Avila Davila, Erika Osiris:
Technol Inst Pachuca, Dept Mech Engn, Rd Mexico Pachuca Km 87-5, Pachuca 42080, Hidalgo, Mexico
Thangarasu P.:
Circuito Interior S/n Facultad de Química Edif. F Lab, 114 Ciudad Universitaria04510, Mexico
Univ Nacl Autonoma Mexico, Fac Quim, Circuito Interior S-N,Edif F Lab 114,Ciudad Univ, Mexico City 04510, DF, Mexico
Hernandez Ramirez, Aurelio:
UPALM, ESIQIE IPN, Dept Met & Mat, San Pedro Zacatenco 07738, Mexico
Academic Area of Earth Sciences and Materials, Autonomous University of Hidalgo State, Hidalgo, Mexico
Metallurgy and Materials Department, ESIQIE-IPN, UPALM, Zacatenco, 07738, Mexico
Mechanical Engineering Department, Technological Institute of Pachuca, Road México-Pachuca Km. 87.5, Hidalgo, 42080, Mexico
Gold
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