Dielectric properties of quaternary calcium aluminoborosilicate system glasses

Yue, Yunlong; Yu, Xian Jin; Wu, Haitao; Chen, X. J.

doi:10.1179/143307509x435141

Cited by 15 publications

(4 citation statements)

References 25 publications

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“…The dielectric constant (ε) is mainly affected by the ionic polarisability and mobility. The dielectric loss (tan α) is principally determined by the space charge polarisation and ionic migration loss [19,41]. The dielectric constant and dielectric loss firstly deteriorated and then improved.…”

Section: Dielectric Propertiesmentioning

confidence: 99%

EFFECT OF REPLACEMENT OF CaO BY La₂O₃ ON THE STRUCTURE, THERMAL AND DIELECTRIC PROPERTIES OF ALKALI-FREE ALUMINOBOROSILICATE GLASSES

Wu¹

2023

Ceramics - Silikaty

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Alkali-free aluminoborosilicate glasses were prepared by the conventional melting method. The effect of the replacement of CaO by La 2 O 3 on the structure, thermal, and dielectric properties of the glasses was investigated by FTIR, DSC, with thermal expansion instruments, and an impedance analyser. With increasing ratios of La 2 O 3 to CaO, the densities of the glasses increased linearly from 2.458 to 2.627 g•cm -3 . Meanwhile, the polymerisation degree of the glass network increased first and then decreased. The glass transition temperature, crystallisation onset temperature and expansion softening temperature showed a gradually increasing trend, while the thermal stability firstly deteriorated, then gradually improved. Additionally, the coefficient of thermal expansion (CTE), dielectric constant and dielectric loss initially decreased, followed by an increase. The sample with the La 2 O 3 /CaO ratio of 1.00 showed excellent properties: had a low CTE (2.71 × 10 -6 °C-1 ), had a dielectric constant (5.23), and a dielectric loss (1.12 × 10 -3 ), which means it is a promising material for integrated circuit packaging applications.

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Section: Dielectric Propertiesmentioning

confidence: 99%

EFFECT OF REPLACEMENT OF CaO BY La₂O₃ ON THE STRUCTURE, THERMAL AND DIELECTRIC PROPERTIES OF ALKALI-FREE ALUMINOBOROSILICATE GLASSES

Wu¹

2023

Ceramics - Silikaty

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“…Borate glass has been widely studied for technological applications because of its structural properties [1,2]. Borate glass with Li has high resistance to atmospheric humidity and high capacity to concentrate transition metal ions.…”

Section: Introductionmentioning

confidence: 99%

Thermoluminescent properties of a Li2O–B2O3–Al2O3 glass system doped with CaF2 and Mn

Ayta

Silva

Dantas

2010

Journal of Luminescence

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“…Alkali borate systems are attractive materials from a fundamental point of view as well as technological point of view [1]. From the literature, it has been observed that certain borate glasses are of greater interest and relevance because of their suitability in the progress of waveguides, electro-optic switches and modulators, magneto-optic materials, and solid-state laser materials [2]. B 2 O 3 -ZnO glass has a high transparent window in the region from 370 nm to 2.2 μm, and these glasses are attractive host materials to incorporate rare earth elements for optoelectronics and optical fibers [3,4].…”

Section: Introductionmentioning

confidence: 99%

Structure and Physical Properties of 59B2O3–10Na2O–(30 − x)CdO–xZnO–1CuO (0 ≤ x ≤ 30) Glass System

Ravangave¹,

Devde²

2018

Advances in Glass Science and Technology

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A series of stable and transparent glasses with the composition 59B 2 O 3-10Na 2 O-(30 − x) CdO-xZnO-1CuO (0 ≤ x ≤ 30) (where x = 0, 7.5, 15, 22.5, and 30 mol%) were prepared by conventional melt-quenching technique. These glasses were characterized using X-ray diffraction (XRD), Fourier-transform infrared (FTIR) and Raman spectroscopes, differential scanning calorimetry (DSC), optical absorption, and electron paramagnetic resonance (EPR). XRD and DSC analysis confirmed the glassy nature of the prepared samples. The physical properties such as density (ρ), molar volume (V m), oxygen packing density (OPD), and the molar volume of oxygen (V o) were calculated and discussed. FTIR and Raman studies showed that the glass network consists of BO 3 and BO 4 units in various borate groups. From DSC, it was found that the glass transition temperature (T g) varies nonlinearly with the addition of ZnO content in place of CdO. Both EPR and optical absorption results have confirmed that the Cu 2+ ions are in octahedral coordination with a strong tetrahedral distortion. The changes in various spectroscopic properties of Cu 2+ ions in the glasses such as spin-Hamiltonian parameters () and bonding coefficients (α 2 , β 1 2 , and β 2) were understood with the help of FTIR and Raman studies.

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Dielectric properties of quaternary calcium aluminoborosilicate system glasses

Cited by 15 publications

References 25 publications

EFFECT OF REPLACEMENT OF CaO BY La₂O₃ ON THE STRUCTURE, THERMAL AND DIELECTRIC PROPERTIES OF ALKALI-FREE ALUMINOBOROSILICATE GLASSES

EFFECT OF REPLACEMENT OF CaO BY La₂O₃ ON THE STRUCTURE, THERMAL AND DIELECTRIC PROPERTIES OF ALKALI-FREE ALUMINOBOROSILICATE GLASSES

Thermoluminescent properties of a Li2O–B2O3–Al2O3 glass system doped with CaF2 and Mn

Structure and Physical Properties of 59B2O3–10Na2O–(30 − x)CdO–xZnO–1CuO (0 ≤ x ≤ 30) Glass System

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