Effect of Constituent Core-sizes on Microstructure and Dielectric Properties of BaTiO3@(0.6Ba-TiO3-0.4BiAlO3) Core-Shell Material

Appiah, Millicent; Hao, Hua; Chen, Wenjin; Chen, Cheng; Yao, Zhonghua; Cao, Minghe; Liu, Hanxing

doi:10.1007/s11595-018-1866-0

Cited by 2 publications

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“…Aside from these peaks, there were further peaks at 596, 671, and 776 °C that could be realized from the DSC analysis. These subsequent heating processes show the release of CO 2 and decomposition of carbonate species. , Yet still, the TG curve recorded a lower overall weight loss. The probable clarification was that the calcination temperature (1200 °C, 3 h) chosen for the preliminary BTC x prepared powders was effective prior to the addition of the BiAlO 3 end series.…”

Section: Resultsmentioning

confidence: 91%

A Unique Mechanism for Dielectric-Temperature Stability of BaTiO₃-Based Ceramics Using Ba(OH)₂/TiO₂ Suspension

et al. 2020

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A comparison between poly(vinyl alcohol) (PVA)-formed (TYPE-I), Ba(OH) 2 /TiO 2 [Ba/Ti] suspension-formed (TYPE-II), and cold isostatic pressed (CIP) pellets (TYPE-II+CIP) of 0.9BaTi 1−x Ca x O 3-x − 0.1BiAlO 3 (x = 0.005−0.03) was investigated. The nominal composition of BiAlO 3 was kept constant at a limit of 0.1 in order to resolve the effect of Casubstitution to the Ti-site. The experimental interpretations of the processing structure−property relationship explicitly support the effectiveness of Ba-(OH) 2 /TiO 2 suspension, as expounded by efficient characterizations with regard to the thermal properties, phase structures, density developments, dielectric properties, microstructure progressions, and impedance analysis response to temperature. Thus, we present XRD analyses and SEM and TEM images that relate the basic underlying dielectric-temperature stability mechanism to the evolutionary dynamics of B-site substitution and core− shell morphology in a densified microstructure (TYPE-II: 5.723−5.919 g/cm 3 , TYPE-II+CIP: 5.784−5.938 g/cm 3 ) of a submicrometer grain size (TYPE-II: 0.32−0.8 μm, TYPE-II+CIP: 0.23−0.71 μm). Apart from enhancing low-temperature sintering, this is the first time a Ba(OH) 2 /TiO 2 precursor suspension has been incorporated as a unique mechanism to effect a wide-range X8R dielectric material.

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Section: Resultsmentioning

confidence: 91%

A Unique Mechanism for Dielectric-Temperature Stability of BaTiO₃-Based Ceramics Using Ba(OH)₂/TiO₂ Suspension

et al. 2020

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“…In recent years, many attempts have been made to design and develop lead-free ceramic technology, e.g. BaTiO 3 (BT), Bi 0.5 Na 0.5 TiO 3 (BNT), (K 0.5 Bi 0.5 )TiO 3 (KBT), BaFe 0.5 Nb 0.5 O 3 (BFN) or BiFeO 3 (BFO) [1,[8][9][10][11][12][13]. However, low Curie temperatures of most of these materials and relatively poor dielectric and piezoelectric properties do not allow their commercial use in electronic devices and converters.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Bochenek,

Osińska,

Mankiewicz

et al. 2020

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The paper presents the technology and basic properties of three compositions of lead-free ceramics: (i) (K 0.44 Na 0.52 Li 0.04 ) NbO 3 , (ii) (K 0.44 Na 0.52 Li 0.04 )NbO 3 +0.5%mol Nd 2 O 3 and (iii) (K 0.44 Na 0.52 Li 0.04 )NbO 3 +0.5%mol Pr 2 O 3 . Powders of the designed compositions based on KNLN were obtained with the classic ceramic technology, as a result of solid phase synthesis, from a mixture of simple oxides and carbonates. The synthesis of ceramic powders was carried out at T s = 900°C for t s = 4 h, while compaction by free sintering at T sint = 1100°C for t sint = 2 h.XRD studies have shown that doping with praseodymium and neodymium promotes the formation of the tetragonal phase in the base composition (K 0.44 Na 0.52 Li 0.04 )NbO 3 at lower temperatures. On the other hand, microstructural tests have shown that the admixture of neodymium and praseodymium improves the sinterability of ceramic samples during the technological process; however, the ceramic samples still exhibit high porosity.

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Effect of Constituent Core-sizes on Microstructure and Dielectric Properties of BaTiO3@(0.6Ba-TiO3-0.4BiAlO3) Core-Shell Material

Cited by 2 publications

References 21 publications

A Unique Mechanism for Dielectric-Temperature Stability of BaTiO₃-Based Ceramics Using Ba(OH)₂/TiO₂ Suspension

A Unique Mechanism for Dielectric-Temperature Stability of BaTiO₃-Based Ceramics Using Ba(OH)₂/TiO₂ Suspension

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Effect of Constituent Core-sizes on Microstructure and Dielectric Properties of BaTiO3@(0.6Ba-TiO3-0.4BiAlO3) Core-Shell Material

Cited by 2 publications

References 21 publications

A Unique Mechanism for Dielectric-Temperature Stability of BaTiO3-Based Ceramics Using Ba(OH)2/TiO2 Suspension

A Unique Mechanism for Dielectric-Temperature Stability of BaTiO3-Based Ceramics Using Ba(OH)2/TiO2 Suspension

Archives of Metallurgy and Materials

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A Unique Mechanism for Dielectric-Temperature Stability of BaTiO₃-Based Ceramics Using Ba(OH)₂/TiO₂ Suspension

A Unique Mechanism for Dielectric-Temperature Stability of BaTiO₃-Based Ceramics Using Ba(OH)₂/TiO₂ Suspension