High-frequency dielectric properties of Mg-Al-Si, Ca-Al-Si and Y-Al-Si oxynitride glasses

Thorp, J. S.; Ahmad, Abu Bakar; Kulesza, B.L.J.; Kenmuir, S. V. J.

doi:10.1007/bf00549806

Cited by 9 publications

(3 citation statements)

References 11 publications

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“…Ohno [5] estimated that the tan δ of the glassy phase was 1-2 × 10 −2 from the data of Clarke. Thorp et al reported that the tan δ of Y-Al-Si oxynitride glasses at 1 GHz was 2.0-2.5 × 10 −3 [12]. Although the composition of glassy phase in our samples is different from these samples, it seems reasonable to suppose that the tan δ of Yb-Si oxynitride glass in this study is also an order of magnitude higher than those of crystalline phases.…”

Section: As-annealed Specimenscontrasting

confidence: 58%

Effect of crystallization of intergranular glassy phases on the dielectric properties of silicon nitride ceramics

Miyazaki

Yoshizawa

2008

Materials Science and Engineering: B

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Section: As-annealed Specimenscontrasting

confidence: 58%

Effect of crystallization of intergranular glassy phases on the dielectric properties of silicon nitride ceramics

Miyazaki

Yoshizawa

2008

Materials Science and Engineering: B

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“…Subsequent work by Drew 56 indicated that the dielectric constants of Si–Al oxide glasses containing either Ca or Mg were increased by the addition of nitrogen. Thorp et al 94,95 found that the dielectric properties of Si–Al–(Ca, Mg, or Y) oxynitride glasses with fixed metal ion contents increased with increasing nitrogen levels.…”

Section: Other Propertiesmentioning

confidence: 99%

An Overview of the Structure and Properties of Silicon‐Based Oxynitride Glasses

Becher

Hampshire

Pomeroy

et al. 2011

Int J of Appl Glass Sci

102

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The silicon oxynitride glasses take advantage of nitrogen bonding to attain high elastic modulus, increased softening temperatures and viscosities, greater slow crack growth resistance, and modest gains in fracture resistance. Of the oxynitride glasses, the Si–Y–Al‐based oxynitride glasses have been most extensively studied and a degree of success has been achieved in understanding how changes in glass composition affect structural parameters and their relationship with properties. More recent studies have focused on the Si–RE–Me oxynitride glasses, where Me is primarily Al or Mg and rare earth (RE) includes most of the lanthanide series elements. These glasses possess a range of elastic, thermal, mechanical, and optical properties, which can be correlated with the strength of the RE bond in terms of the cationic field strength. However, such correlations require knowledge of not only the RE valence state but also its coordination with the anions. Herein, the current state‐of‐the‐art understanding of the properties and structural parameters of oxynitride glasses and their interrelationships are reviewed.

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“…Oxynitride glasses exhibit higher T g and T c , and a lower thermal expansion coefficient than their oxide counterparts 22,26 . They further show up with a larger refractive index, 10,22 ionic conductivity (in particular in the Na–Si–O–N, 101 Li–Si–O–N, 64 and Li–P–O–N 51 systems), dielectric constant, 164–166 and density 26 . Some minor change of the heat capacity were also reported 167,168 .…”

Section: Structure and Physical Propertiesmentioning

confidence: 92%

Review: Elaboration, structure, and mechanical properties of oxynitride glasses

2022

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Oxynitride glasses are glasses where threefold coordinated nitrogen atoms substitute for twofold oxygen ones, hence resulting in a larger interatomic crosslinking degree. Such glasses were first observed at the grain boundary in silicon nitride ceramics, where they govern the high-temperature behavior. Later, they were prepared as bulk materials and motivated numerous researches, thanks to their large viscosity, glass transition range, elastic moduli, hardness, and fracture toughness among inorganic and non-metallic glasses. In different chemical systems that were investigated, the synthesis routes and the sources for these exceptional mechanical properties are reviewed. Oxynitride glasses are not easy to process and suffer from the loss of transparency as nitrogen is incorporated over some critical content. Nevertheless, they are attractive "specialty" glasses in various niche areas, thanks to their large refractive index and dielectric constant, improved chemical durability, high softening point, etc., and majorly to their exceptional mechanical properties.

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High-frequency dielectric properties of Mg-Al-Si, Ca-Al-Si and Y-Al-Si oxynitride glasses

Cited by 9 publications

References 11 publications

Effect of crystallization of intergranular glassy phases on the dielectric properties of silicon nitride ceramics

Effect of crystallization of intergranular glassy phases on the dielectric properties of silicon nitride ceramics

An Overview of the Structure and Properties of Silicon‐Based Oxynitride Glasses

Review: Elaboration, structure, and mechanical properties of oxynitride glasses

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