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- W4313378575 abstract "Microwave dielectric ceramics (MWDCs) with low dielectric constant and low dielectric loss are desired in contemporary society, where the communication frequency is developing to high frequency (sub-6G). Herein, Nd<sub>2</sub>(Zr<sub>1−<i>x</i></sub>Ti<sub><i>x</i></sub>)<sub>3</sub>(MoO<sub>4</sub>)<sub>9</sub> (NZ<sub>1−<i>x</i></sub>T<sub><i>x</i></sub>M, <i>x</i> = 0.02–0.10) ceramics were prepared through a solid-phase process. According to X-ray diffraction (XRD) patterns, the ceramics could form a pure crystal structure with the <i>R</i><inline-formula> <math display=inline id=MA1><mover accent=true><mn>3</mn><mo>¯</mo></mover></math></inline-formula><i>c</i> (167) space group. The internal parameters affecting the properties of the ceramics were calculated and analyzed by employing Clausius–Mossotti relationship, Shannon’s rule, and Phillips–van Vechten–Levine (P–V–L) theory. Furthermore, theoretical dielectric loss of the ceramics was measured and analyzed by a Fourier transform infrared (IR) radiation spectrometer. Notably, when <i>x</i> = 0.08 and sintered at 700 ℃, optimal microwave dielectric properties of the ceramics were obtained, including a dielectric constant (<i>ε</i><sub>r</sub>) = 10.94, <i>Q</i>·<i>f</i> = 82,525 GHz (at 9.62 GHz), and near-zero resonant frequency temperature coefficient (<i>τ</i><sub><i>f</i></sub>) = −12.99 ppm/℃. This study not only obtained an MWDC with excellent properties but also deeply analyzed the effects of Ti<sup>4+</sup> on the microwave dielectric properties and chemical bond characteristics of Nd<sub>2</sub>Zr<sub>3</sub>(MoO<sub>4</sub>)<sub>9</sub> (NZM), which laid a solid foundation for the development of rare-earth molybdate MWDC system." @default.
- W4313378575 created "2023-01-06" @default.
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- W4313378575 date "2023-01-01" @default.
- W4313378575 modified "2023-10-17" @default.
- W4313378575 title "Crystal structure, chemical bond characteristics, infrared reflection spectrum, and microwave dielectric properties of Nd <sub>2</sub>(Zr <sub>1− <i>x</i> </sub>Ti <sub> <i>x</i> </sub>) <sub>3</sub>(MoO <sub>4</sub>) <sub>9</sub> ceramics" @default.
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- W4313378575 doi "https://doi.org/10.26599/jac.2023.9220668" @default.
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