Bond characteristics and microwave dielectric properties on Zn3-xCux(BO3)2 ceramics with ultralow dielectric loss

Zhang, Qin; Su, Hua; Zhong, Maofeng; Li, Yuanxun; Tang, Xiaoli; Jing, Yulan

doi:10.1016/j.ceramint.2020.10.007

Cited by 18 publications

(5 citation statements)

References 33 publications

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“…By further observation, it was found that the bond lengths showed irregular variations. There was a correlation between these chemical bond changes and microwave dielectrics [16,17].…”

Section: Phase Composition and Structure Analysismentioning

confidence: 92%

“…The sample with x = 0.04 had the highest Qf value; however, the corresponding total lattice energy was lower at this time compared to the sample with x = 0. In general, the higher the lattice energy, the higher the Qf, but the Qf of the sample with x = 0 was lower than that of the sample with x = 0.04 due to the presence of the second-phase MgTi 2 O 5 (Qf = 47,000 GHz) in the sample with x = 0 [17,31]. At x > 0.04, the trends of lattice energy and Qf were in agreement, indicating that lattice energy and the second phase are the main factors that affected Qf in this experiment.…”

Section: Microwave Dielectric Propertiesmentioning

confidence: 93%

“…It can be observed that the lattice energy of the Mg-O bond showed minimal variation, whereas the lattice energy of the Ti/(Mn 1/3 Nb 2/3 )-O bond and the overall total lattice energy decreased with increasing x. In addition, the lattice energy of the Ti/(Mn 1/3 Nb 2/3 )-O bond was higher compared with that of the Mg-O bond, indicating that the Ti/(Mn 1/3 Nb 2/3 )-O bond made a significant contribution to the total lattice energy and had more influence on the Qf when sintered at 1250 • C [17]. The sample with x = 0.04 had the highest Qf value; however, the corresponding total lattice energy was lower at this time compared to the sample with x = 0.…”

Section: Microwave Dielectric Propertiesmentioning

confidence: 95%

“…By further observation, it was found that the bond lengths showed irregular variations. There was a correlation between these chemical bond changes and microwave dielectrics [16,17]. In order to further analyze the crystal structure of samples, the XRD patterns of the MgTi1-x(Mn1/3Nb2/3)xO3 (x = 0-0.30) ceramics were refined by FullProf software (FullProf 2020.6) [14], and the refinement results are plotted in Figure 2.…”

Section: Phase Composition and Structure Analysismentioning

confidence: 99%

“…According to the complex chemical bond theory, each compound crystal can be decomposed into a superposition of several binary crystal sub-formulas (A m B n ), where A and B represent different types of cations and anions, respectively [17]. Thus, MgTi 1−x (Mn 1/3 Nb 2/3 ) x O 3 (x = 0-0.30) can be decomposed into the following binary crystal sub-formulas:…”

Section: Microwave Dielectric Propertiesmentioning

confidence: 99%

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The Structure and Microwave Dielectric Properties of MgTi1−x(Mn1/3Nb2/3)xO3 Ceramics

Huang

Wang

et al. 2023

Crystals

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MgTi1−x(Mn1/3Nb2/3)xO3 (x = 0–0.30) ceramics were prepared via the solid-state reaction method. The phase composition, microstructure, bond characteristics, and microwave dielectric properties of MgTi1−x(Mn1/3Nb2/3)xO3 (x = 0–0.30) were systematically investigated. The MgTi1−x(Mn1/3Nb2/3)xO3 ceramics presented an ilmenite type with an R-3 space group, and the secondary-phase MgTi2O5 only existed at x = 0 and 0.30. The introduction of (Mn1/3Nb2/3)4+ effectively suppressed the formation of the MgTi2O5 phase. The variation trend of the dielectric constant (εr) was the same as relative density. The quality factor (Qf) value was enhanced by the stable microstructure, which was caused via the lattice energy of Ti/(Mn1/3Nb2/3)-O bonds. And a high Qf value (353,000 GHz) was obtained for MgTi1−x(Mn1/3Nb2/3)xO3 (x = 0.04) ceramics sintered at 1250 °C. In addition, the introduction of Mn2+ ions with a larger ionic radius exacerbates the distortion of TiO6 octahedra, leading to significant fluctuations in the temperature coefficient of the resonance frequency (τf) value.

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“…By further observation, it was found that the bond lengths showed irregular variations. There was a correlation between these chemical bond changes and microwave dielectrics [16,17].…”

Section: Phase Composition and Structure Analysismentioning

confidence: 92%

Section: Microwave Dielectric Propertiesmentioning

confidence: 93%

Section: Microwave Dielectric Propertiesmentioning

confidence: 95%