The effect of sintering temperature and time on microwave properties of Sm(Zn1/2Ti1/2)O3 ceramics for resonators

Hsu, Cheng‐Hsing; Soong, Hong-Tie; Yu, Cheng-Chi; Huang, Cheng−Liang; Ku, Ming-Ta

doi:10.1016/j.ceramint.2006.02.014

Cited by 21 publications

(4 citation statements)

References 13 publications

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“…New dielectric materials with higher dielectric constants are required to develop ever more miniaturized devices for the next generation of high-performance transistor devices, capacitors, as well as processors. Recently, there is progress in making high-quality dielectric ceramics, particularly developing structure–property–composition relationships for new materials with high permittivity, better temperature stability, and considerably better sinterability, to develop low temperature cofired multilayer devices possible. − Because of these demands, finer particles are needed to make a progressive multilayer condenser with high densification and high capacity.…”

Section: Electronics Information and Communication Technologymentioning

confidence: 99%

Continuous Hydrothermal Synthesis of Inorganic Nanoparticles: Applications and Future Directions

et al. 2017

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Nanomaterials are at the leading edge of the emerging field of nanotechnology. Their unique and tunable size-dependent properties (in the range 1-100 nm) make these materials indispensable in many modern technological applications. In this Review, we summarize the state-of-art in the manufacture and applications of inorganic nanoparticles made using continuous hydrothermal flow synthesis (CHFS) processes. First, we introduce ideal requirements of any flow process for nanoceramics production, outline different approaches to CHFS, and introduce the pertinent properties of supercritical water and issues around mixing in flow, to generate nanoparticles. This Review then gives comprehensive coverage of the current application space for CHFS-made nanomaterials including optical, healthcare, electronics (including sensors, information, and communication technologies), catalysis, devices (including energy harvesting/conversion/fuels), and energy storage applications. Thereafter, topics of precursor chemistry and products, as well as materials or structures, are discussed (surface-functionalized hybrids, nanocomposites, nanograined coatings and monoliths, and metal-organic frameworks). Later, this Review focuses on some of the key apparatus innovations in the field, such as in situ flow/rapid heating systems (to investigate kinetics and mechanisms), approaches to high throughput flow syntheses (for nanomaterials discovery), as well as recent developments in scale-up of hydrothermal flow processes. Finally, this Review covers environmental considerations, future directions and capabilities, along with the conclusions and outlook.

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Section: Electronics Information and Communication Technologymentioning

confidence: 99%

Continuous Hydrothermal Synthesis of Inorganic Nanoparticles: Applications and Future Directions

et al. 2017

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“…18 The result was similar with the (Ca 0.8 Sr 0.2 )SnO 3 , Sm(Zn 1/2 Ti 1/2 ) O 3 , and 88MCNLT ceramics. [19][20][21] For different sintering time, as both variations of e r and Q 9 f value of pure LMO ceramics were consistent with that of density, it suggested the e r and Q 9 f value of specimens were controlled by density.…”

Section: Resultsmentioning

confidence: 88%

Novel Temperature Stable Li₂MnO₃ Dielectric Ceramics with High Q for LTCC Applications

Tseng

Chang

et al. 2014

J. Am. Ceram. Soc.

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Novel microwave dielectric ceramics in the Li2MnO3 system with high Q prepared through a conventional solid‐state route had been investigated. All the specimens exhibited single phase ceramics sintered in the temperature range 1140°C–1230°C. The microwave dielectric properties of Li2MnO3 ceramics were strongly correlated with sintering temperature and density. The best microwave dielectric properties of εr = 13.6, Q × f = 97 000 (GHz), and τf = −5.2 ppm/°C could be obtained as sintered at 1200°C for 4 h. BaCu(B2O5) (BCB) could effectively lower the sintering temperature from 1200°C to 930°C and slightly induced degradation of the microwave dielectric properties. The Li2MnO3 ceramics doped with 2 wt% BaCu(B2O5) had excellent dielectric properties of εr = 11.9, Q × f = 80 600 (GHz), and τf = 0 ppm/°C. With low sintering temperature and good dielectric properties, the BCB added Li2MnO3 ceramics are suitable candidates for LTCC applications in wireless communication system.

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“…Compared with the above mentioned systems, several double perovskite ceramics Ln(B 1/2 Ti 1/2 )O 3 (Ln¼ La, Nd, and Sm; B ¼ Zn, and Co) have drawn considerable attention in recent years due to their excellent microwave dielectric properties, especially ultrahigh quality factor (37,000-170,000 GHz) [8][9][10][11][12][13]. Among these materials, Nd(Zn 1/2 Ti 1/2 ) O 3 ceramics were found to possess better microwave dielectric properties (ε r =31.6, Q Â f=170000 GHz and τ f = À 42 ppm/ o C) after sintering at 1330 1C for 4 h with a cooling rate of 10 1C/ min [9].…”

Section: Introductionmentioning

confidence: 99%

Influence of cooling rate on the structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics

Fan

Qiu

2015

Ceramics International

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The effect of sintering temperature and time on microwave properties of Sm(Zn1/2Ti1/2)O3 ceramics for resonators

Cited by 21 publications

References 13 publications

Continuous Hydrothermal Synthesis of Inorganic Nanoparticles: Applications and Future Directions

Continuous Hydrothermal Synthesis of Inorganic Nanoparticles: Applications and Future Directions

Novel Temperature Stable Li₂MnO₃ Dielectric Ceramics with High Q for LTCC Applications

Influence of cooling rate on the structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics

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The effect of sintering temperature and time on microwave properties of Sm(Zn1/2Ti1/2)O3 ceramics for resonators

Cited by 21 publications

References 13 publications

Continuous Hydrothermal Synthesis of Inorganic Nanoparticles: Applications and Future Directions

Continuous Hydrothermal Synthesis of Inorganic Nanoparticles: Applications and Future Directions

Novel Temperature Stable Li2MnO3 Dielectric Ceramics with High Q for LTCC Applications

Influence of cooling rate on the structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics

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Novel Temperature Stable Li₂MnO₃ Dielectric Ceramics with High Q for LTCC Applications