Bond ionicity, lattice energy, bond energy and the microwave dielectric properties of non-stoichiometric MgZrNb2+xO8+2.5x ceramics

Xiao, Mi; He, Susu; Meng, Jiao; Zhang, Ping

doi:10.1016/j.matchemphys.2019.122412

Cited by 14 publications

(10 citation statements)

References 23 publications

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“…52-0688), which indicated that the Pr2Zr3(MoO4)9-like crystal structure with a 3 Rc space group was obtained. According to the result, the composition of the crystal phase is not changed by the content of (Mg1/3Sb2/3) 4+ ions substitution [14]. With the amount of (Mg1/3Sb2/3) 4+ increasing, the linear variation in lattice parameters (a, b and c) and unit cell volume (Vm) were presented in Fig.…”

Section: Resultsmentioning

confidence: 79%

“…52-0688), which indicated that the Pr2Zr3(MoO4)9-like crystal structure with a 3 Rc space group was obtained. According to the result, the composition of the crystal phase is not changed by the content of (Mg1/3Sb2/3) 4+ ions substitution [14]. In order to meet the needs of calculating density and complex chemical bonds to further analyze its structure, included lattice parameters, bond length and unit cell volumes were obtained by Rietveld refinement [15].…”

Section: Resultsmentioning

confidence: 99%

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Effects of (Mg1/3Sb2/3)4+ substitution on the structure and microwave dielectric properties of Ce2Zr3(Mg1/3Sb2/3)3-3(MoO4)9 ceramics

Wang

Liu

Sun

et al. 2021

Preprint

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Ce 2 [Zr 1-x (Mg 1/3 Sb 2/3 ) x ] 3 (MoO 4 ) 9 (0.02≤x≤0.10) ceramics were prepared well through the traditional solid-state method. A single phase, belonging to the space group of R-3c, was detected by using X-ray diffraction at sintering temperatures ranging from 700 to 850 °C. The crystallization micro-structural of specimens was examined by applying Scanning electron microscopy. The structural refinement of these samples was investigated in detail by performing the Rietveld refinement method. The intrinsic properties were calculated and explored via far-infrared reflectivity spectroscopy. The correlations between the chemical bonds parameters and microwave dielectric properties were calculated and analyzed by P-V-L theory. Ce 2 [Zr 0.94 (Mg 1/3 Sb 2/3 ) 0.06 ] 3 (MoO 4 ) 9 ceramics with excellent dielectric properties: ε r = 10.37, Q×f = 71748 GHz and τ f = −13.6 ppm/°C sintered at 725 °C for 6 hours.

show abstract

Section: Resultsmentioning

confidence: 79%

“…52-0688), which indicated that the Pr2Zr3(MoO4)9-like crystal structure with a 3 Rc space group was obtained. According to the result, the composition of the crystal phase is not changed by the content of (Mg1/3Sb2/3) 4+ ions substitution [14]. In order to meet the needs of calculating density and complex chemical bonds to further analyze its structure, included lattice parameters, bond length and unit cell volumes were obtained by Rietveld refinement [15].…”

Section: Resultsmentioning

confidence: 99%

Effects of (Mg1/3Sb2/3)4+ substitution on the structure and microwave dielectric properties of Ce2Zr3(Mg1/3Sb2/3)3-3(MoO4)9 ceramics

Wang

Liu

Sun

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…52-0688), which indicated that the Pr2Zr3(MoO4)9-like crystal structure with a R-3c space group was obtained. According to the result, the composition of the crystal phase is not changed by the content of (Mg1/3Sb2/3) 4+ ions substitution [22]. In order to meet the needs of calculating density and complex chemical bonds to further analyze its structure, lattice parameters, bond length and unit cell volumes were obtained by Rietveld refinement [23].…”

Section: Resultsmentioning

confidence: 99%

Effects of (Mg1/3Sb2/3)4+ Substitution on the Structure and Microwave Dielectric Properties of Ce2Zr3x(Mg1/3Sb2/3)3-3x(MoO4)9 Ceramics

Zhang

Sun

Zhang

et al. 2020

Preprint

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Ce2[Zr1-x(Mg1/3Sb2/3)x]3(MoO4)9 (0.02≤x≤0.10) ceramics were prepared well through the traditional solid-state method. A single phase, belonging to the space group of R-3c, was detected by using X-ray diffraction at sintering temperatures ranging from 700 to 850 °C. The crystallization micro-structural of specimens was examined by applying Scanning electron microscopy. The structural refinement of these samples was investigated in detail by performing the Rietveld refinement method. The intrinsic properties were calculated and explored via far-infrared reflectivity spectroscopy. The correlations between the chemical bonds parameters and microwave dielectric properties were calculated and analyzed by P-V-L theory. Ce2[Zr0.94(Mg1/3Sb2/3)0.06]3(MoO4)9 ceramics with excellent dielectric properties: εr = 10.37, Q×f = 71748 GHz and τf = −13.6 ppm/°C sintered at 725 °C for 6 hours.

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“…The chemical bond theory is usually used to investigate the chemical bond characteristics (i.e., bond ionicity [f i ], lattice energy [U b ], and bond energy [E b ]) of crystalline materials, which significantly influence the MDPs. [28][29][30][31][32] According to Zhang typically affected by f i , U b , and E b , respectively. 28 To calculate the specific chemical bond parameters, the complex crystals of Li 2+x ZrO 3 F x were decomposed into the sum of binary crystals as shown in the following equation: (4) The detailed calculation process of f i , U b , and E b is given in the Supporting Information section.…”

Section: F I G U R Ementioning

confidence: 99%

Li₂₊_xZrO₃F_x (0 ≤ x ≤1.25): A new high‐Q × f and temperature‐stable microwave dielectric ceramic system for LTCC applications

et al. 2022

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Here we report a new high-Q × f and temperature-stable oxyfluoride microwave dielectric ceramic system of Li 2+x ZrO 3 F x (0 ≤ x ≤ 1.25) sintered at low temperatures (i.e., ≤950 • C). The sintering characteristics, phase assemblage, microstructures, and microwave dielectric properties (MDPs) of the Li 2+x ZrO 3 F x specimens were studied. The chemical bond theory calculations were employed to analyze the compositional dependence of the MDPs in the Li 2+x ZrO 3 F x ceramic system. The optimal MDPs of ε r = 15.8, Q × f = 65 100 GHz, and τ f = 1.2 ppm/ • C were achieved in the sample with x = 1. Besides, the ceramic samples exhibited high chemical compatibility with Ag electrodes. Therefore, the novel ceramic system of Li 2+x ZrO 3 F x is confirmed to be a promising candidate as a low-temperature co-fired ceramic material.

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Bond ionicity, lattice energy, bond energy and the microwave dielectric properties of non-stoichiometric MgZrNb2+xO8+2.5x ceramics

Cited by 14 publications

References 23 publications

Effects of (Mg1/3Sb2/3)4+ substitution on the structure and microwave dielectric properties of Ce2Zr3(Mg1/3Sb2/3)3-3(MoO4)9 ceramics

Effects of (Mg1/3Sb2/3)4+ substitution on the structure and microwave dielectric properties of Ce2Zr3(Mg1/3Sb2/3)3-3(MoO4)9 ceramics

Effects of (Mg1/3Sb2/3)4+ Substitution on the Structure and Microwave Dielectric Properties of Ce2Zr3x(Mg1/3Sb2/3)3-3x(MoO4)9 Ceramics

Li₂₊_xZrO₃F_x (0 ≤ x ≤1.25): A new high‐Q × f and temperature‐stable microwave dielectric ceramic system for LTCC applications

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Bond ionicity, lattice energy, bond energy and the microwave dielectric properties of non-stoichiometric MgZrNb2+xO8+2.5x ceramics

Cited by 14 publications

References 23 publications

Effects of (Mg1/3Sb2/3)4+ substitution on the structure and microwave dielectric properties of Ce2Zr3(Mg1/3Sb2/3)3-3(MoO4)9 ceramics

Effects of (Mg1/3Sb2/3)4+ substitution on the structure and microwave dielectric properties of Ce2Zr3(Mg1/3Sb2/3)3-3(MoO4)9 ceramics

Effects of (Mg1/3Sb2/3)4+ Substitution on the Structure and Microwave Dielectric Properties of Ce2Zr3x(Mg1/3Sb2/3)3-3x(MoO4)9 Ceramics

Li2+xZrO3Fx (0 ≤ x ≤1.25): A new high‐Q × f and temperature‐stable microwave dielectric ceramic system for LTCC applications

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Li₂₊_xZrO₃F_x (0 ≤ x ≤1.25): A new high‐Q × f and temperature‐stable microwave dielectric ceramic system for LTCC applications