Effect of annealing time, weight pressure and cobalt doping on the electrical and magnetic behavior of barium titanate

Journal Article · Fri May 06 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4946255· OSTI ID:22591348

Samuvel, K., E-mail: [e-mail]; Ramachandran, K., E-mail: [e-mail] ^[1]

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1. Department of Physics, Faculty of Engineering and Technology, Vadapalani Campus, SRM University Chennai-600026, Tamilnadu (India)

BaTi{sub 0.5}CO{sub 0.5}O{sub 3} (BTCO) nanoparticles were prepared by the solid state reaction technique using different starting materials and the microstructure examined by XRD, FESEM, BDS and VSM. X-ray diffraction and electron diffraction patterns showed that the nanoparticles were the tetragonal BTCO phase. The BTCO nanoparticles prepared from the starting materials of as prepared titanium-oxide, Cobalt -oxide and barium carbonate have spherical grain morphology, an average size of 65 nm and a fairly narrow size distribution. The nano-scale presence and the formation of the tetragonal perovskite phase as well as the crystallinity were detected using the mentioned techniques. Dielectric properties of the samples were measured at different frequencies. Broadband dielectric spectroscopy is applied to investigate the electrical properties of disordered perovskite-like ceramics in a wide temperature range. The doped BTCO samples exhibited low loss factor at 1 kHz and 1 MHz frequencies respectively.

• OSTI ID: 22591348
• Journal Information: AIP Conference Proceedings, Vol. 1728, Issue 1; Conference: ICC 2015: International conference on condensed matter and applied physics, Bikaner (India), 30-31 Oct 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANNEALING
BARIUM
BARIUM CARBONATES
CERAMICS
COBALT
COBALT OXIDES
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
DOPED MATERIALS
FREQUENCY DEPENDENCE
KHZ RANGE
MHZ RANGE
MICROSTRUCTURE
MORPHOLOGY
SPECTROSCOPY
TETRAGONAL LATTICES
TITANIUM
TITANIUM OXIDES