Dielectric properties of some oxynitride glasses

“…93 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: Optical and Electrical 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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“…Largely due to the feasibility to produce refractory silicon nitride based ceramics containing oxynitride glasses as grain-boundary phases, a number of investigations have been carried out on oxynitride glass formation and properties [7][8][9]. Oxynitride glasses have since been prepared in systems including Y-Si-Al-O-N [10][11][12][13][14], Mg-Si-O-N [15,16], La-Si-O-N [17][18][19], Na-Ca-Si-O-N [20], Na-B-Si-O-N [21], Ca-Si-Al-O-N [22][23][24], Mg-Si-Al-O-N [8,24], Li-B-O-N [25], Na-B-O-N [25] and K-B-O-N [25].…”

Section: Introductionmentioning

confidence: 99%