Influence of Nb 5+ and Sb 3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO 3 ceramics

Brzozowski, E.; Castro, Miriam Susana

doi:10.1016/j.jeurceramsoc.2003.07.015

Cited by 53 publications

(18 citation statements)

References 32 publications

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“…To improve its performances, BaTiO3 composition has been modified to have better properties. It has been modified with some additives [4][5][6][7] in such a way that the A and/or B sites are not occupied by a unique type of atom.…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of the Dielectric Properties of Sn-Doped Ba0.8Sr0.2TiO3 Perovskite

Brahem

Farhat

Graça

et al. 2016

Journal of Elec Materi

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The aim of this paper is to study performance enhancement of the dielectric properties of polycrystalline Ba 0:8 Sr 0:2 Ti ð1ÀxÞ Sn x O 3 , with 0 x 0:2. The material was characterized by x-ray diffraction, scanning electron microscopy (SEM), micro-Raman spectroscopy and impedance spectroscopy technique. The results have been analyzed by studying the effects of substituting Sn 4+ for Ti 4+ . The observed diffraction peaks have been indexed to a cubic structure with space group Pm3m. The calculated lattice parameters increase from 3.9834 Å to 4.0091 Å with increasing Sn concentration. The SEM micrographs show that with increasing Sn an increase of the grain size from x = 0 up to x = 0.15 was observed. The dielectric measurements confirm the relaxor behavior of all the concentrations of Ba 0:8 Sr 0:2 Ti ð1ÀxÞ Sn x O 3 compounds. The Ba 0:8 Sr 0:2 Ti 0:95 Sn 0:05 O 3 compound presents the most interesting properties, namely high dielectric constant value (e 0 ðT m Þ ¼ 5017) and a Curie temperature slightly above room temperature ðT c ¼ 317KÞ. An important dielectric constant value persists for a wide range of temperatures around room temperature. This is considered as an advantage of the Ba 0:8 Sr 0:2 Ti 0:95 Sn 0:05 O 3 relaxor ferroelectrics.

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Section: Introductionmentioning

confidence: 99%

Performance Enhancement of the Dielectric Properties of Sn-Doped Ba0.8Sr0.2TiO3 Perovskite

Brahem

Farhat

Graça

et al. 2016

Journal of Elec Materi

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“…From the colors of the sintered samples, i.e. grey blue, it is noted that good semiconducting materials were achieved [12]. The resistivity-temperature curves of the samples sintered at 1290 • C for 1 h are shown in Fig.…”

Section: Resultsmentioning

confidence: 94%

PTCR behaviour of Ba2LaBiO6-doped BaTiO3 ceramics

Luo

Liu

et al. 2008

Journal of Alloys and Compounds

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“…(8) According to Brzozowski and Castro, a high donor content (above 0.15 mol%) resulted in a high resistivity. (9) Chatterjee et al found that after 0.2 mol% donor doping, the electrical resistivity reached 10 -6 -10 -7 S/m. (10) The PMMA-containing samples included 0.3 mol% La 2 O 3 .…”

Section: Discussionmentioning

confidence: 99%

Electrical Conductivity and Hysteresis Characteristic of BaTiO3-Based Sensors with Polymethyl metacrylate (PMMA) Pore Former

2013

Sensors and Materials

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Porous barium titanate ceramics were fabricated by the addition of polymethyl metacrylate (PMMA). The effects of PMMA on the microstructure and electrical conductivity of the porous ceramics were investigated. According to thermal analysis, the endothermic reaction occurred at 832.7°C, which corresponds to the orthorhombichexagonal transformation of barium carbonate, and the formation of barium titanate occurred at 1098.6°C. It was found that the porosity increased and the grain size decreased with increasing PMMA mass%. The crystalline structure of barium titanate ceramics was determined to be tetragonal and independent of PMMA content. The electrical conductivity, humidity sensitivity, and hysteresis characteristic of fabricated ceramics changed with relative humidity, porosity, and PMMA content.

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Influence of Nb 5+ and Sb 3+ dopants on the defect profile, PTCR effect and GBBL characteristics of BaTiO 3 ceramics

Cited by 53 publications

References 32 publications

Performance Enhancement of the Dielectric Properties of Sn-Doped Ba0.8Sr0.2TiO3 Perovskite

Performance Enhancement of the Dielectric Properties of Sn-Doped Ba0.8Sr0.2TiO3 Perovskite

PTCR behaviour of Ba2LaBiO6-doped BaTiO3 ceramics

Electrical Conductivity and Hysteresis Characteristic of BaTiO3-Based Sensors with Polymethyl metacrylate (PMMA) Pore Former

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