Dielectric and thermal properties of aluminoborosilicate glasses doped with mixed rare-earth oxides

Li, Sheng; Lu, Yucheng; Qu, Yanbin; Kang, Junfeng; Yue, Yunlong; Xiong, Lun

doi:10.1016/j.jnoncrysol.2020.120550

Cited by 17 publications

(11 citation statements)

References 41 publications

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“…The dielectric loss is pronounced at low frequencies which could be attributed to the polarization loss, migration, and relaxation losses produced by the hopping of charge carriers. The dielectric loss decreases at higher frequencies due to the restricted motion of charges that cannot keep pace with the rapidly switching alternating electric fields [1]. However, at high frequencies due to the rapid oscillations of the applied electric fields, the entire glass network vibrates.…”

Section: Dielectric Analysismentioning

confidence: 99%

“…The sixth-generation cellular technology in optoelectronics aimed at low latency communication faces challenges of propagation loss through optical fiber waveguides and fiber lasers, which eventually depend on the dielectric properties of the material [1]. Crystalline electrodes that require higher sintering temperatures, resulting in undesirable interfacial impurities could be replaced with glass analogs, to supplement the electrodeelectrolyte interfacial contact and ionic conductivity levels [2].…”

Section: Introductionmentioning

confidence: 99%

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Thermogravimetric and temperature-dependent electrical investigations of Pr³⁺ doped multi-component silicate glasses for microelectronic technology

2024

Phys. Scr.

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Multi-component silicate glasses doped with 0, 0.5, 1, and 1.5 mol% of praseodymium (Pr3+) were synthesized by the sol-gel method. Thermal analysis of the glasses, evinced a high working temperature of 351 °C and Hruby coefficient, KH = 1.415 in the highly doped system, corroborating the effective role of Pr3+ ions in endowing superior thermal stability to the glass. Broadband dielectric spectroscopy was applied to study the temperature-dependent electrical behavior of the glasses for their suitability as electrodes and solid electrolyte materials in batteries. A high dielectric constant of 4797 was evidenced at 1 kHz when recorded at 473 K. The AC conductivity of the glass doped with 1 mol% was observed to be the highest with 94.8 x 10-5 S/cm at 10 MHz and 473 K. Jonscher’s power law exponent decreased with temperature, attributing the conducting mechanism to the Correlated Barrier Hopping (CBH) model. The Nyquist impedance spectra demonstrated a depressed semicircle with a spur at the low-frequency end, validating the non-Debye relaxation in the glasses. The equivalent circuitry of the plot predicted parallel combinations of resistor and constant phase elements which reflects a Warburg diffusion and capacitive approach. Bode’s phasor diagram confirmed the capacitive nature by a phase angle of -90 ° in all the glasses. While a uniform increase in dielectric constant and conductivity was observed up to 1 mol% of Pr3+, a sharp decline in the electrical phenomenon was observed with 1.5 mol% of Pr3+, due to the possible blockade of the hopping of charge carriers by the largely quantified dopant ions. Extracting a high dielectric constant, and ionic conductivity at high frequencies, with an optimal dopant concentration of 1 mol% Pr3+, the composite glasses could be considered for their potential use in integrated microcomponent storage devices as cathode and solid electrolyte materials.

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Section: Dielectric Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermogravimetric and temperature-dependent electrical investigations of Pr³⁺ doped multi-component silicate glasses for microelectronic technology

2024

Phys. Scr.

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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%

“…The density and CTE of glasses increased by the incorporation of Y 2 O 3 . Li et al [19] showed and discussed the aluminoborosilicate glasses containing La 2 O 3 and CeO 2 . The results showed that more Q 3 and Q 4 are formed in the samples with the La 2 O 3 /RE x O y ratio of 1/2, meaning that the structure is the most compact.…”

Section: Introductionmentioning

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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“…Bin et al studied the structure of lanthanum-iron phosphate glasses by Raman and found a small amount of La 2 O 3 couldn’t change the structure of the glass network and La 3+ can enhance the stability of glass structures [ 12 ]. Sheng et al found the degree of polymerization of glass first increases and then decreases with the increase of doping content of La 2 O 3 [ 13 ]. Based on the existing literature, it can be considered that the content of La 2 O 3 has a great influence on the structure and properties of glass [ 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Study on Structure and Properties of La2O3-Doped Basaltic Glasses for Immobilizing Simulated Lanthanides

et al. 2021

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The La2O3-doped basaltic glass simulated high-level waste form (HLW) was prepared by the solid-state melt method. The simulated waste La2O3 maximum loading and the doping effect on structure, thermal stability, leaching behavior, density, and hardness of basaltic glasses were studied. XRD and SEM results show that the simulated waste loading of La2O3 in basaltic glass can be up to ~46 wt.%, and apatite (CaLa4(SiO4)3O) precipitates when the content of La2O3 reaches 56 wt.%. Raman results indicate that the addition of La2O3 breaks the Si–O–Si bond of large-membered and four-membered, but the number of A13+ involved in the formation of the network increase. Low content of La2O3 can help to repair the glass network, but it destroys the network as above 26 wt.%. DSC results show the thermal stability of simulated waste forms first increases and then decreases with the increase of La2O3 content. With the increase of La2O3 content, the density of the simulated waste form increases, and the hardness decreases. The leaching chemical stability of samples was evaluated by the ASTM Product Consistency Test (PCT) Method, which show that all the samples have good chemical stability. The leaching rates of La and Fe are three orders of magnitude lower than those of the other elements. Among them, L36 has the best comprehensive leaching performance.

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Dielectric and thermal properties of aluminoborosilicate glasses doped with mixed rare-earth oxides

Cited by 17 publications

References 41 publications

Thermogravimetric and temperature-dependent electrical investigations of Pr³⁺ doped multi-component silicate glasses for microelectronic technology

Thermogravimetric and temperature-dependent electrical investigations of Pr³⁺ doped multi-component silicate glasses for microelectronic technology

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

Study on Structure and Properties of La2O3-Doped Basaltic Glasses for Immobilizing Simulated Lanthanides

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Dielectric and thermal properties of aluminoborosilicate glasses doped with mixed rare-earth oxides

Cited by 17 publications

References 41 publications

Thermogravimetric and temperature-dependent electrical investigations of Pr3+ doped multi-component silicate glasses for microelectronic technology

Thermogravimetric and temperature-dependent electrical investigations of Pr3+ doped multi-component silicate glasses for microelectronic technology

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

Study on Structure and Properties of La2O3-Doped Basaltic Glasses for Immobilizing Simulated Lanthanides

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Thermogravimetric and temperature-dependent electrical investigations of Pr³⁺ doped multi-component silicate glasses for microelectronic technology

Thermogravimetric and temperature-dependent electrical investigations of Pr³⁺ doped multi-component silicate glasses for microelectronic technology