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Influence of W substitution on crystal structure, phase evolution and microwave dielectric properties of (Na0.5Bi0.5)MoO4 ceramics with low sintering temperature.

ABSTRACT: In this work, the (Na0.5Bi0.5)(Mo1-xWx)O4 (x?=?0.0, 0.5 and 1.0) ceramics were prepared via solid state reaction method. All the samples can be well densified at sintering temperature about ~720?°C. Dense and homogeneous microstructure with grain size lying between 2~8 ?m can be observed from scanning electron microscopy (SEM). Microwave dielectric permittivity of the (Na0.5Bi0.5)(Mo0.5W0.5)O4 ceramic was found to be temperature-independent in a wide range between 25~120?°C with a temperature coefficient of frequency (TCF) ~-6?ppm/°C, a permittivity ~28.9, and Qf values 12,000~14,000?GHz. Crystal structure was refined using Rietveld method and lattice parameters are a?=?b?=?5.281 (5)?Å and c?=?11.550 (6)?Å with a space group I 41/a (88). The (Na0.5Bi0.5)(Mo1-xWx)O4 ceramics might be good candidate for low temperature co-fired ceramics (LTCC) technology.

SUBMITTER: Pang LX 

PROVIDER: S-EPMC5466633 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature

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Influence of W substitution on crystal structure, phase evolution and microwave dielectric properties of (Na<sub>0.5</sub>Bi<sub>0.5</sub>)MoO<sub>4</sub> ceramics with low sintering temperature.

Pang Li-Xia LX   Zhou Di D   Qi Ze-Ming ZM   Yue Zhen-Xing ZX  

Scientific reports 20170609 1

In this work, the (Na<sub>0.5</sub>Bi<sub>0.5</sub>)(Mo<sub>1-x</sub>W<sub>x</sub>)O<sub>4</sub> (x = 0.0, 0.5 and 1.0) ceramics were prepared via solid state reaction method. All the samples can be well densified at sintering temperature about ~720 °C. Dense and homogeneous microstructure with grain size lying between 2~8 μm can be observed from scanning electron microscopy (SEM). Microwave dielectric permittivity of the (Na<sub>0.5</sub>Bi<sub>0.5</sub>)(Mo<sub>0.5</sub>W<sub>0.5</sub>)O<sub>4  ...[more]

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