Phase, microstructure and microwave dielectric properties of A-site deficient (La, Nd)2/3TiO3 perovskite ceramics

Saleem, Muhammad; Iqbal, Yaseen; Qin, Shan; Wu, Xiang; Zhu, Feng

doi:10.1515/msp-2015-0005

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…Solid solution of AgNb/TaO 3based ceramics was then studied extensively [430,431]. Temperature-stable MWDCs with the formula of (La,Nd) 2/3 TiO 3 were studied by Saleem et al [432].…”

Section: Abo 3 Formulamentioning

confidence: 99%

The latest process and challenges of microwave dielectric ceramics based on pseudo phase diagrams

et al. 2021

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The explosive process of 5G communication evokes the urgent demand of miniaturized and integrated dielectric ceramics filter. It is a pressing need to advance the development of dielectric ceramics utilization of emerging technology to design new materials and understand the polarization mechanism. This review provides the summary of the study of microwave dielectric ceramics (MWDCs) sintered higher than 1000 from 2010 up to now, °C with the purpose of taking a broad and historical view of these ceramics and illustrating research directions. To date, researchers endeavor to explain the structure-property relationship of ceramics with multitude of approaches and design a new formula or strategy to obtain excellent microwave dielectric properties. There are variety of factors that impact the permittivity, dielectric loss, and temperature stability of dielectric materials, covering intrinsic and extrinsic factors. Many of these factors are often intertwined, which can complicate new dielectric material discovery and the mechanism investigation. Because of the various ceramics systems, pseudo phase diagram was used to classify the dielectric materials based on the composition. In this review, the ceramics were firstly divided into ternary systems, and then brief description of the experimental probes and complementary theoretical methods that have been used to discern the intrinsic polarization mechanisms and the origin of intrinsic loss was mentioned. Finally, some perspectives on the future outlook for high-temperature MWDCs were offered based on the synthesis method, characterization techniques, and significant theory developments.

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“…Solid solution of AgNb/TaO 3based ceramics was then studied extensively [430,431]. Temperature-stable MWDCs with the formula of (La,Nd) 2/3 TiO 3 were studied by Saleem et al [432].…”

Section: Abo 3 Formulamentioning

confidence: 99%

The latest process and challenges of microwave dielectric ceramics based on pseudo phase diagrams

et al. 2021

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“…Barium, aluminium, manganese, magnesium are common dopants used for enhancement of dielectric constants in perovskite dielectrics [4][5][6]. Fine grains are generally desired for dielectric constant enhancement [7][8].…”

Section: Introductionmentioning

confidence: 99%

Microstructures and Dielectric Constants of Ba0.05SrxCa0.95-xTiO3 (x=0, 0.225, 0.475, 0.725 and 0.95) Synthesized by the Solution Combustion Technique

Jongprateep

Sato

Boonsalee³

et al. 2018

KEM

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Barium strontium calcium titanate is a dielectric material exploited in fabrication of electronic devices such as capacitors, signal filters and satellite components. Dielectric properties can be enhanced through compositional and microstructural control. This study, therefore, aimed at synthesizing barium strontium calcium titanate (Ba0.05SrxCa0.95-xTiO3, where x = 0, 0.225, 0.475, 0.725 and 0.95) powders by a solution combustion technique. The powders were pressed, sintered at 1450°C and tested for their properties. Experimental results revealed that strontium content did not significantly influence chemical composition, particle sizes and density. All powders exhibited a single phase corresponding to Ba0.05SrxCa0.95-xTiO3with fine particles with the average size smaller than 0.4 micrometer. All sintered samples had density higher than 95% of theoretical density. On the contrary, the results indicated that strontium content affected grain size, grain morphology and dielectric constant of the sintered samples. The highest dielectric constant of 531 (at 1 MHz) was achieved in the Ba0.05Sr0.225Ca0.725TiO3. Dielectric constant was discussed with respect to microstructure.

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Soft chemistry synthesis and dielectric properties of A-site deficient perovskite-type compound La 2/3 TiO 3−δ

Bugrov

Abdulaeva

Silyukov

et al. 2016

Ceramics International

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Phase, microstructure and microwave dielectric properties of A-site deficient (La, Nd)_2/3TiO₃ perovskite ceramics

Cited by 4 publications

References 14 publications

The latest process and challenges of microwave dielectric ceramics based on pseudo phase diagrams

The latest process and challenges of microwave dielectric ceramics based on pseudo phase diagrams

Microstructures and Dielectric Constants of Ba<sub>0.05</sub>Sr<sub>x</sub>Ca<sub>0.95-x</sub>TiO<sub>3</sub> (x=0, 0.225, 0.475, 0.725 and 0.95) Synthesized by the Solution Combustion Technique

Soft chemistry synthesis and dielectric properties of A-site deficient perovskite-type compound La 2/3 TiO 3−δ

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