The sintering and dielectric properties modification of Li2MgSiO4 ceramic with Ni2+-ion doping based on calculation and experiment

Peng, Rui; Su, Hua; An, Di; Lu, Yongcheng; Tao, Zhihua; Chen, Daming; Shi, Liang; Li, Yuanxun

doi:10.1016/j.jmrt.2019.11.061

Cited by 37 publications

(10 citation statements)

References 28 publications

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“…As shown in Figure 1E, the composite ceramics synthesized in this experiment provided both excellent dielectric and sintering properties when compared with other ceramics. 7,8,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] Figure 2A-D presents the XRD patterns of all the samples processed at the same temperature (950°C). A single ZBO phase (JCPDS#37-1486) was formed for the samples with x = 0.00 and 0.05 and increasing the Mg 2+ content resulted Since the densification temperature of ZBO is 925°C, the increasing density for the sample with x = 0.05 sintered at 900°C should be attributed to the decreasing densification temperature due to lattice distortion, and the decreasing density value for the same sample sintered at 925-975°C can be ascribed to the over-sintering.…”

Section: Methodsmentioning

confidence: 99%

Three‐phase borate solid solution with low sintering temperature, high‐quality factor, and low dielectric constant

Peng

et al. 2021

J. Am. Ceram. Soc.

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The sintering and microwave dielectric properties of a ceramic material based on the mixing of Mg 3 B 2 O 6 and Zn 3 B 2 O 6 have been widely studied using first-principles calculations and experimental solid-state reactions. Characterization methods include the Network Analyzer, X-ray, Raman diffraction, scanning electron microscopy, energy-dispersive spectroscopy, and differential-thermal and thermo-mechanical analyzer. The increasing amount of Mg 2+ results in the appearance of Mg 2 B 2 O 5 and ZnO, and the mutual substitution (Mg 2+ and Zn 2+ ) phenomenon has emerged in Zn 3 B 2 O 6 and Mg 2 B 2 O 5 . The mechanisms have been explained with the help of DFT calculations. The bond parameters and electron distributions of the ZnO 4 tetrahedron and MgO 6 octahedron have been modified due to substitution. The sintering, substitution, and phase formation properties have been analyzed quantitatively through the energy parameters. The best dielectric properties were obtained for x = 0.20 sintered at 950°C, ε r = 6.47, Q × f = 89 600 GHz (15.2 GHz), τ f = −48.6 ppm/°C, relative density = 96.7%. The mixing of Zn 3 B 2 O 6 and Mg 3 B 2 O 6 ceramics is a feasible method to obtain a ceramic with low sintering temperature and excellent dielectric properties.

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Section: Methodsmentioning

confidence: 99%

Three‐phase borate solid solution with low sintering temperature, high‐quality factor, and low dielectric constant

Peng

et al. 2021

J. Am. Ceram. Soc.

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“…The thermal stability of dielectric performance was quantified using Eq. (1) through the resonant frequency at 80 (f T ) and 20 ℃ (f 0 ) [24].…”

Section: Methodsmentioning

confidence: 99%

Amelioration of sintering and multi-frequency dielectric properties of Mg3B2O6: A mechanism study of nickel substitution using DFT calculation

Peng

Zhang

et al. 2021

J Adv Ceram

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With the support of density functional theory (DFT) calculation, the amelioration of sintering and dielectric properties of the Mg3B2O6 (MBO) ceramic was realized through the substitution of magnesium with nickel. The TE-mode cylindrical cavity method was used to measure the dielectric properties at different frequencies. The thermo-mechanical analysis and simultaneous thermal analysis were used to characterize the chemical and mechanical properties. The phase composition was determined through the X-ray diffraction (XRD) and Raman spectrum. The microstructure was investigated using the scanning electron microscopy (SEM). Magnesium substitution with nickel (4 mol%) could ionize the B-O bond of BO3, modify the vibration mode, improve the order degree, densify the microstructure, decrease the intrinsic densification temperature, and ameliorate the dielectric properties of the MBO ceramics. The maximum values were achieved for the ceramics with 4 mol% nickel and sintered at 1175 °C, that is, 97.2% for relative density, 72,600 GHz (10 GHz), 75,600 GHz (11.4 GHz), and 92,200 GHz (15 GHz) for Q × f, 7.1 (10 GHz), 7.01 (11.4 GHz), and 6.91 (15 GHz) for εr, and −56.3 ppm/°C for τf.

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“…In addition, optimized Zn 3 B 2 O 6 ceramics using Ni 2+ instead of Zn 2+ were reported with strong dielectric properties at 900 ℃ with a ε r of 6.9, Q × f of 91,000 GHz, and τ f of approximately 55.6 ppm/℃. Peng et al [15] reported Li 2 (Mg 1−x Ni x )SiO 4 ceramics with the addition of 2 wt% lithium-boron-bismuth-silicon (LBBS) glass and realised excellent dielectric properties at 900 ℃ (sintering) and microwave dielectric properties. Fan et al [16] [18].…”

Section: Introduction mentioning

confidence: 99%

Sintering behaviour and microwave dielectric properties of MgO-2B2O3-xwt%BaCu(B2O5)-ywt%H3BO3 ceramics

Wang

et al. 2021

J Adv Ceram

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This study investigates the bulk density, sintering behaviour, and microwave dielectric properties of the MgO-2B2O3 series ceramics synthesised by solid-state reaction. According to the X-ray diffraction and microstructural analyses, the as-prepared MgO-2B2O3 ceramics possess a single-phase structure with a rod-like morphology. The effects of different quantities of H3BO3 and BaCu(B2O5) (BCB) on the bulk density, sintering behaviour, and microwave dielectric properties of the MgO-2B2O3 ceramics were investigated. Accordingly, the optimal sintering temperature was obtained by adding 30 wt% H3BO3 and 8 wt% BCB. We also reduced the sintering temperature to 825 °C. Furthermore, the addition of 40 wt% H3BO3 and 4 wt% BCB increased the quality factor, permittivity, and temperature coefficient of resonance frequency of MgO-2B2O3 to 44,306 GHz (at 15 GHz), 5.1, and −32 ppm/°C, respectively. These properties make MgO-2B2O3 a viable low-temperature co-fired ceramic with broad applications in microwave dielectrics.

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The sintering and dielectric properties modification of Li2MgSiO4 ceramic with Ni2+-ion doping based on calculation and experiment

Cited by 37 publications

References 28 publications

Three‐phase borate solid solution with low sintering temperature, high‐quality factor, and low dielectric constant

Three‐phase borate solid solution with low sintering temperature, high‐quality factor, and low dielectric constant

Amelioration of sintering and multi-frequency dielectric properties of Mg3B2O6: A mechanism study of nickel substitution using DFT calculation

Sintering behaviour and microwave dielectric properties of MgO-2B2O3-xwt%BaCu(B2O5)-ywt%H3BO3 ceramics

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