Properties of Hf-Doped Bi&lt;sub&gt;1.5&lt;/sub&gt;Zn&lt;sub&gt;0.92&lt;/sub&gt;Nb&lt;sub&gt;1.5&lt;/sub&gt;O&lt;sub&gt;6.92&lt;/sub&gt; Ceramic Varicaps

Khusayfan, Najla M.; Khanfar, Hazem K.

doi:10.1109/ted.2015.2503338

Cited by 3 publications

(5 citation statements)

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“…The compound Bi 1.5 Zn 0.92 Nb 1.5 O 6.92 (BZN) ceramics is one of the pyrochlore ceramics which finds wide range of applications [1][2][3][4] . They are regarded as low temperature cofired ceramics that is attractive for the fabrication of multiplayer devices in the high frequency and microwave ranges 1 .…”

Section: Introductionmentioning

confidence: 99%

“…The Hf-BZN vericaps displayed series and parallel resonance exchange above 1000 MHz. When tested as microwave filters, they displayed features of microwave band-reject filter properties with notch frequencies of 1580, 1845, and 2040 MHz 4 . The importance of these filters lay in the property of being able to detect the signals of power down to 40 nW.…”

Section: Introductionmentioning

confidence: 99%

“…The importance of these filters lay in the property of being able to detect the signals of power down to 40 nW. This feature makes the BZN ceramics attractive for use in monostable -bistable circuits 4 .…”

Section: Introductionmentioning

confidence: 99%

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Structural, Optical and Electrical Properties of Bi1.5Zn0.92Nb1.5-6x/5WxO6.92 Pyrochlore Ceramics

2021

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Herein, the structural, morphological, compositional, optical, electrical and dielectric properties of Bi 1.5 Zn 0.92 Nb 1.5-6x/5 W x O 6.92 (BZN) solid solutions are reported. Tungsten substituted BZN ceramics which are fabricated by the solid state reaction technique exhibited solubility limits at substitution level below x=0.18. Remarkable engineering in the structural, optical, electrical and dielectric properties of the pyrochlore ceramics is achieved via W substitution. Namely, shrinkage in both of the lattice parameters and in the energy band gap accompanied with decrease in the microstrain, in the dielectric constant and in the electrical resistivity is observed upon increasing the W content below the solubility limit. The increase in the W content in the BZN ceramics enhances the densification of the pyrochlore and leads to higher light absorbability and larger crystallites growth. The temperature dependent electrical resistivity measurements has also shown that the pyrochlore exhibit thermal stability below 380 K.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural, Optical and Electrical Properties of Bi1.5Zn0.92Nb1.5-6x/5WxO6.92 Pyrochlore Ceramics

2021

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“…1 In addition, Hf doped BZN ceramics is nominated as tunable varicaps. 2,3 The measurements of the power spectra in the gigahertz frequency domain indicated that the Hf-BZN ceramics are good candidates for the fabrication of microwave band-reject filters. 2,3 Moreover, the BiFeO 3 -BaTiO 3 doped BZN ceramics are found to be attractive as high energy storage capacitors and high strain actuators as well.…”

Section: Introductionmentioning

confidence: 99%

“…2,3 The measurements of the power spectra in the gigahertz frequency domain indicated that the Hf-BZN ceramics are good candidates for the fabrication of microwave band-reject filters. 2,3 Moreover, the BiFeO 3 -BaTiO 3 doped BZN ceramics are found to be attractive as high energy storage capacitors and high strain actuators as well. 4 In light of the reported literature data, [1][2][3][4][5] here in this work, we are motivated to produce a new class of bandpass/ reject filters that can operate in the radio and microwave ranges of frequency.…”

Section: Introductionmentioning

confidence: 99%

Tungsten doped Bi_1.5Zn_0.92Nb_1.5O_6.92 ceramics designed as radio/microwave band pass/reject filters

Qasrawi

Abdalghafour

Mergen

2020

Micro & Optical Tech Letters

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Herein, radiowave/microwave bandpass/reject filters are fabricated from the tungsten doped Bi1.5Zn0.92Nb1.5‐6x/5WxO6.92 (W‐BZN) pyrochlore ceramics. The W‐BZN band filters are prepared by the solid state reaction technique and subjected to X‐ray diffraction (XRD) and impedance spectroscopy analyses. It was shown that the W‐BZN filters can display negative capacitance effects accompanied with resonance‐antiresonance oscillations. The calculations of the reflection coefficient parameter (S11), the return loss (Lr) and the voltage standing wave ratios (VSWR) in the frequency domain of 0.01 to 1.80 GHz, has shown that the W‐BZN device can perform as microwave cavities at two notch frequency values of 0.44 and 1.53 GHz. W‐BZN devices can also be nominated as noise reducers and radiowave/microwave signal receivers suitable for telecommunication technology.

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Temperature–stable dielectrics based on Cu–doped Bi2Mg2/3Nb4/3O7 pyrochlore ceramics for LTCC

Guo

et al. 2018

Ceramics International

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Properties of Hf-Doped Bi<sub>1.5</sub>Zn<sub>0.92</sub>Nb<sub>1.5</sub>O<sub>6.92</sub> Ceramic Varicaps

Cited by 3 publications

References 14 publications

Structural, Optical and Electrical Properties of Bi1.5Zn0.92Nb1.5-6x/5WxO6.92 Pyrochlore Ceramics

Structural, Optical and Electrical Properties of Bi1.5Zn0.92Nb1.5-6x/5WxO6.92 Pyrochlore Ceramics

Tungsten doped Bi_1.5Zn_0.92Nb_1.5O_6.92 ceramics designed as radio/microwave band pass/reject filters

Temperature–stable dielectrics based on Cu–doped Bi2Mg2/3Nb4/3O7 pyrochlore ceramics for LTCC

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Properties of Hf-Doped Bi<sub>1.5</sub>Zn<sub>0.92</sub>Nb<sub>1.5</sub>O<sub>6.92</sub> Ceramic Varicaps

Cited by 3 publications

References 14 publications

Structural, Optical and Electrical Properties of Bi1.5Zn0.92Nb1.5-6x/5WxO6.92 Pyrochlore Ceramics

Structural, Optical and Electrical Properties of Bi1.5Zn0.92Nb1.5-6x/5WxO6.92 Pyrochlore Ceramics

Tungsten doped Bi1.5Zn0.92Nb1.5O6.92 ceramics designed as radio/microwave band pass/reject filters

Temperature–stable dielectrics based on Cu–doped Bi2Mg2/3Nb4/3O7 pyrochlore ceramics for LTCC

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Tungsten doped Bi_1.5Zn_0.92Nb_1.5O_6.92 ceramics designed as radio/microwave band pass/reject filters