PLZT—Synthesis, sintering and ceramics microstructure

Dambekalne, M.; Antonova, M.; Livinsh, M.; Garbarz-Glos, B.; Śmiga, W.; Sternberg, A.

doi:10.1016/j.jeurceramsoc.2006.02.012

Cited by 20 publications

(14 citation statements)

References 5 publications

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“…PLZT x/65/35 with different contents of lanthanum powders were obtain by two-stage coprecipitation process from a mixed solution of inorganic salts ZrOCl 2 ¢8H 2 O, TiCl 4 , La (NO 2 ) 3 ¢6H 2 O and Pb(NO 3 ) 2, wholly described in paper [4]. At the first step, the hydroxypolymer of TiO 2 ¡ZrO 2 ¡La 2 O 3 is obtained by co-precipitation with 25% NH 4 OH from a mixed solution of the corresponding metallic salts.…”

Section: Methodsmentioning

confidence: 99%

“…[1][2][3] It is possible to obtain chemically stable ceramic materials whose physical characteristics indicate the possibility of their use in various sectors of industry. [4] The improved properties of ferroelectric materials are attributed to their behaviour. Softening and hardening of perovskite based ferroelectrics by acceptor and donor doping are relevant tools to manage their electromechanical properties.…”

Section: Introductionmentioning

confidence: 99%

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Processing, basic characterization and standard dielectric measurements on PLZT x/65/35 (2≤x≤13) ceramics

et al. 2016

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The influence of external stress (0-800bar) on the dielectric properties of PLZT x/65/35 (2x13) ceramics was investigated. Applying uniaxial pressure leads to a change in the peak intensity of the electric permittivity (e), of its frequency dispersion as well as in the dielectric hysteresis. The peak intensity of e becomes broader and shifts to lower temperatures for PLZT x/65/35 with x D 2, 4, 6, 7, 9.75, 10, 11 and 13, with increasing pressure, on heating. It was concluded that applying uniaxial pressure induces an increase of T m , and thus has similar effects as the increase of the Ti ion concentration in the PZT system. Results based on nanoregion switching processes under combined electromechanical loading were interpreted. Surveys clearly demonstrated that applied stress has a significant influence on the dielectric properties of PLZT ceramics.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Processing, basic characterization and standard dielectric measurements on PLZT x/65/35 (2≤x≤13) ceramics

et al. 2016

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“…PLZT −x/65/35 with 0 ≤ x ≤ 13 powders were obtained by original two-stage coprecpitation method from mixed solution of inorganic salts ZrOCl 2 · 8H 2 O, TiCl 4 , La(NO 2 ) 3 · 6H 2 O and Pb(NO 3 ) 2 described in paper [1]. At the first stage the hydroxypolymer of TiO 2 −ZrO 2 −La 2 O 3 is obtained by co-precipitation with 25% NH 4 OH from mixed solution of the corresponding metallic salts.…”

Section: Samples Preparationmentioning

confidence: 99%

“…At the second stage PbO was introduced into the mixture of TiO 2 −ZrO 2 −La 2 O 3 . Ceramic samples were prepared by two-stage hot-pressing technology [1]. The first stage was performed at 1150-1180 • C for 1 h in vacuum at pressure 20 MPa.…”

Section: Samples Preparationmentioning

confidence: 99%

Influence of Electromechanical Fields on Dielectric Properties of PLZT−x/65/35 Ceramics (x = 6 and 7)

et al. 2011

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High density and transparent PLZT−x/65/35 (x = 6 and 7) ceramics with the average grain size of 5-7 µm was obtained by two−stage hot−pressing technology. The measurements of temperature/frequency dependence of the permittivities of these ceramics under uniaxial pressure (0-100 MPa) applied parallel to the ac electric field have been carried out. It was found that uniaxial pressure significantly influences dielectric properties of these ceramics. With the increase of pressure the maximum intensity in ε(T) curve decreases, becomes more diffuse and shifts towards higher temperature, dielectric dispersion decreases and classical ferroelectric seems to change to relaxor one. It was concluded, that the applied uniaxial pressure or increasing Ti−ions content in PZT solid solutions induces similar effects. The results were discussed in term of an elastic changes in inter−ionic distances in the crystal structure and domain switching under the action of electromechanical loading.

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“…Lately, high-energy ball milled method [5] and many wet chemistry-based routes were developed to prepare ultra-fine powders for PLZT ceramics, including chemical co-precipitation [6], sol-gel process [2,4], and hydrothermal reaction [7]. The conventional method requires a high calcination temperature, leading to hard particle agglomerates of the powders and subsequent poor microstructure and properties on the one hand and evaporation of lead component on the other.…”

Section: Introductionmentioning

confidence: 99%