Microwave dielectric properties and sintering behaviors of Zn1.8SiO3.8 ceramics

Liang, Zheng; Han, Xuening; Wang, Gang; Shi, Liang; Li, Wenxin; Zhang, Huaiwu

doi:10.1007/s10854-020-04835-0

Cited by 9 publications

(5 citation statements)

References 18 publications

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“…Melting CuO could enhance the sintering procession of Zn 2 SiO 4 , and the quality factor reached 105,500 GHz when sintered at 1150 [28]. Zn ℃ -deficient formula was verified valid to suppress the formation of secondary phase in Zn 2 SiO 4 ceramics, and Zn 1.8 SiO 3.8 was estimated with properties of ε r ≈ 6.451, Q×f value ≈ 102,807 GHz, and τ f ≈ -32 ppm/℃, sintered at 1300 [29]. ℃ After predicting the permittivity of ZrO 2 -SiO 2 , HfO 2 -SiO 2 , La 2 O 2 -SiO 2 , and Y 2 O 3 -SiO 2 , those systems were clarified as an alternative of dynamic random access memory capacitor dielectric materials [30].…”

Section: Synthesis Of Densementioning

confidence: 80%

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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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Section: Synthesis Of Densementioning

confidence: 80%

“…Fig 29. Distributions of (a) model predicted relative permittivity in virtual space of materials, (b) cross-section of (a) for a clear view of low permittivity zone, and (c) measured permittivity.…”

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confidence: 99%

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

et al. 2021

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“…[21][22][23] Among them, silicates are potential candidates for actual applications due to their exceptionally good dielectric properties, stable mechanical properties, ease of process, and low cost. 24,25 Specifically, Guo et al 26 initially synthesized single-phase Zn 2 SiO 4 willemite through the solid-state reaction of ZnO and SiO 2 and reported its exceptional microwave dielectric prop-erties characterized by a remarkably high quality factor Q × f = 219000 GHz, which has garnered significant attention. However, subsequent reports have been unable to reproduce these findings.…”

Section: Introductionmentioning

confidence: 99%

“…Some of the commonly used raw materials include titanium dioxide, magnesium oxide, aluminum oxide, and silicon dioxide 21–23 . Among them, silicates are potential candidates for actual applications due to their exceptionally good dielectric properties, stable mechanical properties, ease of process, and low cost 24,25 . Specifically, Guo et al 26 .…”

Section: Introductionmentioning

confidence: 99%

Phase purifying and dielectric improvement in Zn₂SiO₄ ceramics via simply controlling the particle size of SiO₂

Xing,

Song,

Pan

2024

Int J Applied Ceramic Tech

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The zinc orthosilicate, Zn2SiO4 ceramics, exhibit great potential as microwave dielectric materials due to their low dielectric constant and ultrahigh quality factor. The solid‐state synthesis of Zn2SiO4 ceramics often results in the presence of a secondary phase of ZnO, however, leading to significantly lower Q×f values. Cold‐isostatic‐pressing (CIP) and nonstoichiometry have been proven effective in purifying the Zn2SiO4 but need elaborate process and composition manipulation. In this work, it was found that the particle size of SiO2 plays a crucial role in purifying the Zn2SiO4 phase. Specially, nano‐sized SiO2 particles (15 and 30 nm) led to the formation of a ZnO secondary phase in synthesized Zn2SiO4 ceramics, while micro‐sized (2 and 10 µm) resulted in pure‐phase Zn2SiO4 with excellent microwave properties. Notably, when prepared with 10 µm SiO2 and sintered at 1 340°C, the resulting Zn2SiO4 exhibited outstanding microwave performances with a Q×f value of 122 570 GHz, a temperature coefficient of frequency τf of −51.9 ppm/°C, and a dielectric constant (εr) of 6.5. These findings highlight the importance of controlling particle size during synthesis to achieve desired material properties such as purity and excellent microwave performances.

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“…Many efforts have been made to mimic these natural structures, exploring man-made materials with layered filler structure and high loading (hence high mechanical properties) while lightweight and functional properties, which can be used in numerous applications, including sensors, aerospace, nuclear power, energy absorption and healthcare devices [5][6][7][8]. By icetemplating, E. Munch et al emulated nacre-like "brick-and-mortar" structure to fabricate aluminum oxide/polymethyl methacrylate hybrid materials with high yield strength (200 MPa) and toughness (30 MPa•m 1/2 ), which are comparable to the properties of aluminum alloys [2].…”

Section: Introductionmentioning

confidence: 99%

Nature inspired hierarchical structures in nano-cellular epoxy/graphene-Fe3O4 nanocomposites with ultra-efficient EMI and robust mechanical strength

Fan

Wang

Gao

et al. 2022

Journal of Materials Science & Technology

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Microwave dielectric properties and sintering behaviors of Zn1.8SiO3.8 ceramics

Cited by 9 publications

References 18 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

Phase purifying and dielectric improvement in Zn₂SiO₄ ceramics via simply controlling the particle size of SiO₂

Nature inspired hierarchical structures in nano-cellular epoxy/graphene-Fe3O4 nanocomposites with ultra-efficient EMI and robust mechanical strength

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Microwave dielectric properties and sintering behaviors of Zn1.8SiO3.8 ceramics

Cited by 9 publications

References 18 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

Phase purifying and dielectric improvement in Zn2SiO4 ceramics via simply controlling the particle size of SiO2

Nature inspired hierarchical structures in nano-cellular epoxy/graphene-Fe3O4 nanocomposites with ultra-efficient EMI and robust mechanical strength

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Phase purifying and dielectric improvement in Zn₂SiO₄ ceramics via simply controlling the particle size of SiO₂