Dependence of annealing time on structural and morphological properties of Ca(Zr0.05Ti0.95)O3 thin films

Cavalcante, L. S.; Simões, Alexandre Zirpoli; Orlandi, Marcelo Ornaghi; Santos, M. R. M. C.; Varela, José Arana; Longo, Elson

doi:10.1016/j.jallcom.2006.11.129

Cited by 5 publications

(4 citation statements)

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“…1b shows a typical SEM image of the CCTO thin film surface. The SEM characterization indicates that the quick annealing used in this work was an efficient way to improve the surface porosity of the CCTO thin films compared to the literature results for other perovskite thin films prepared with PPM [18,19]. In addition, the film shows a homogeneous grain size distribution, with an average width of approximately 50 nm.…”

Section: Resultsmentioning

confidence: 63%

“…Then, using an appropriate heating setup, the polymer film can be pyrolyzed to produce crystalline oxide thin films with dense or porous morphologies. The advantages of this sample preparation route are the fine control of the film thickness, through multiple solution depositions, and the grain size and porosity, through the temperature and time of crystallization annealing [19,20].…”

Section: Synthesis Proceduresmentioning

confidence: 99%

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Gas sensing and conductivity relationship on nanoporous thin films: A CaCu3Ti4O12 case study

et al. 2016

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In this work, CaCu 3 Ti 4 O 12 (CCTO) thin films were synthesized with the polymeric precursor method and characterized by structural (X-ray diffraction) and morphological (scanning electron microscopy) techniques. These films were composed of a single CCTO phase and presented high surface porosity. The gas sensing response and conductivity-type relationship were investigated by two different approaches. Gas sensing measurements performed at different temperatures using different atmospheres showed that the CCTO has n-type gas sensing behavior and can detect small amounts of oxidizing gases with high sensitivity and selectivity. The type of intrinsic conductivity was also investigated through thermopower measurements, which indicated intrinsic n-type conductivity in CCTO thin films prepared with the polymeric precursor method and confirmed the direct relationship between the gas sensing behavior and the intrinsic conductivity of CCTO.

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Section: Resultsmentioning

confidence: 63%

Section: Synthesis Proceduresmentioning

confidence: 99%

Gas sensing and conductivity relationship on nanoporous thin films: A CaCu3Ti4O12 case study

et al. 2016

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“…This may be due to the defects (vacancy, movable ion, leaky grain‐boundary, etc.) that developed in the structure of the bulk material with donor dopant . Two main mechanisms can be considered for substituting Nb for Ti in the BiT lattice.…”

Section: Resultsmentioning

confidence: 99%

“…that developed in the structure of the bulk material with donor dopant. [59][60][61][62][63][64][65][66][67] Two main mechanisms can be considered for substituting Nb for Ti in the BiT lattice. The compensation mechanism for substituting a 5+ ion for a 4+ ion should reduce the oxygen vacancy concentration, leading to formation of Bi 3+ vacancies.…”

Section: Resultsmentioning

confidence: 99%

Electrical Properties of Textured Niobium‐Doped Bismuth Titanate Ceramics

et al. 2012

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Crystallographically textured Nb‐doped bismuth titanate ceramics Bi4Ti(3−x)NbxO12, were fabricated by tape casting using plate‐like Bi4Ti3O12 particles prepared by a molten‐salt method as the templates. The templates were aligned in the fine‐grained matrix by aqueous tape casting with their major surface parallel to the casting plane. Effect of niobium on the grain orientation in the material was investigated. It was found that the use of a fine precursor powder led to enhanced densification of the ceramic, while Nb doping reduced electrical conduction and dielectric loss, which enabled poling at high temperatures and high electric fields. The textured Bi4Ti3O12 ceramic showed a high anisotropy in its dielectric properties in the directions parallel and perpendicular to the casting plane. Highly textured BiT was obtained with the use of only 5 wt% of template particles by sintering at 800°C for 1 h.

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Sol–gel derived zinc oxide films: Effect of deposition parameters on structure, microstructure and photoluminescence properties

Aksoy

Çağlar

Ilıcan

et al. 2011

Superlattices and Microstructures

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Dependence of annealing time on structural and morphological properties of Ca(Zr0.05Ti0.95)O3 thin films

Cited by 5 publications

References 20 publications

Gas sensing and conductivity relationship on nanoporous thin films: A CaCu3Ti4O12 case study

Gas sensing and conductivity relationship on nanoporous thin films: A CaCu3Ti4O12 case study

Electrical Properties of Textured Niobium‐Doped Bismuth Titanate Ceramics

Sol–gel derived zinc oxide films: Effect of deposition parameters on structure, microstructure and photoluminescence properties

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