0000000000122004

AUTHOR

Piotr Czaja

showing 5 related works from this author

Electrical transport in lead-free (Na0.5Bi0.5)1–xSrxTiO3 ceramics (x = 0, 0.01 and 0.02)

2017

Lead-free (Na0.5Bi0.5)1xSrxTiO3 (x = 0, 0.01 and 0.02) ceramics were manufactured through a solid-state mixed oxide method and their ac (σac) and dc (σdc) electric conductivity were studied. It is ...

010302 applied physicsMaterials science02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesElectrical transportElectrical resistivity and conductivityvisual_art0103 physical sciencesvisual_art.visual_art_mediumMixed oxideGeneral Materials ScienceCeramicComposite material0210 nano-technologyLead (electronics)InstrumentationPhase Transitions
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SrTiO3-doping effect on dielectric and ferroelectric behavior of Na0.5Bi0.5 TiO3 ceramics

2018

Lead-free (Na0.5Bi0.5)1-xSrxTiO3 ceramics (x = 0–0.04) were synthesized by a conventional mixed-oxide technique. The microstructure study showed a dense structure, in good agreement with that of ab...

010302 applied physicsMaterials scienceDoping02 engineering and technologyDielectric021001 nanoscience & nanotechnologyCondensed Matter PhysicsMicrostructure01 natural sciencesFerroelectricityElectronic Optical and Magnetic Materialsvisual_art0103 physical sciencesvisual_art.visual_art_mediumCeramicComposite material0210 nano-technologyFerroelectrics
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Raman spectra and anomalies of dielectric properties and thermal expansion of lead-free (1−x)Na0.5Bi0.5TiO3-xSrTiO3 (x = 0, 0.08 and 0.1) ceramics

2016

ABSTRACTThermal expansion, Raman and dielectric properties of the lead-free (1−x)Na0.5Bi0.5TiO3-xSrTiO3 (x = 0, 0.08 and 0.1) ceramic solid solutions, fabricated by the conventional solid-state reaction method, were investigated. The Sr-doping results in an increase of the dielectric permittivity, broadening of the permittivity maximum, enhancement of the relaxation near depolarization temperature, broadening of the Raman bands and shift of all anomalies toward lower temperatures. The observed effects are attributed to an increase of the degree of cationic disorder and enhancement of the relaxor-like features. Anomalies in the thermal expansion strain were observed at the temperatures corre…

010302 applied physicsPermittivityPhase transitionMaterials scienceCondensed matter physicsRelaxation (NMR)02 engineering and technologyDielectric021001 nanoscience & nanotechnology01 natural sciencesThermal expansionTetragonal crystal systemsymbols.namesakePhase (matter)0103 physical sciencessymbolsGeneral Materials Science0210 nano-technologyRaman spectroscopyInstrumentationPhase Transitions
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Physical properties and microstructure characteristics of (1–x)BaTiO3–xCaTiO3 systems

2018

The study investigates the microstructure, thermal and mechanical properties of (1–x)BaTiO3–xCaTiO3 ((1–x)BT–xCT)) (x = 0.01, 0.04, 0.08) samples. The BT–CT system to be tested was formed as a soli...

010302 applied physicsMaterials science0103 physical sciencesThermalGeneral Materials Science02 engineering and technologyDielectricComposite material021001 nanoscience & nanotechnology0210 nano-technologyMicrostructure01 natural sciencesInstrumentationPhase Transitions
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Influence of uniaxial pressure on dielectric properties of (1- x )Na 0.5 Bi 0.5 TiO 3– x SrTiO 3 for x = 0.01, 0.04, and 0.1 ceramics

2017

The publication costs of this article were covered by the Estonian Academy of Sciences and the University of Tartu.

uniaxial pressureMaterials sciencevisual_artferroelectric materials:NATURAL SCIENCES:Physics [Research Subject Categories]General Engineeringvisual_art.visual_art_mediumDielectricCeramicComposite materialUniaxial pressuredielectric spectroscopyperovskiteProceedings of the Estonian Academy of Sciences
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