Low‐temperature sintering and electrical properties of BBSZ glass‐doped ZnO‐based multilayer varistors

Lu, Yongcheng; Li, Yuanxun; Peng, Rui; Su, Hua; Tao, Zhihua; Chen, Mingzhou; Chen, Daming

doi:10.1111/ijac.13367

Cited by 10 publications

(5 citation statements)

References 27 publications

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“…32 Lu et al have reported that the addition of BBSZ glass into ZnObased ceramic improved the densification at much lower sintering temperature. 33 It is reported for BBSZ-assisted sintering of M-type barium ferrite [Ba(CoTi) 1.5 Fe 9 O 19 ] that liquid-phase BBSZ glass promoted grain growth. 33 Liquid-phase sintering is well reported in the literature.…”

Section: Methodsmentioning

confidence: 99%

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Synthesis and Microwave Dielectric Properties of BBSZ-Zinc Silicate Based Material for LTCC Applications

Deshmukh

Chaware

Ratheesh

et al. 2021

Journal of Elec Materi

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The microwave dielectric properties and microstructures of zinc silicate (Zn 2 SiO 4) ceramic with the addition of 5-20 wt.% B 2 O 3-Bi 2 O 3-SiO 2-ZnO (BBSZ) glass have been studied for low-temperature co-fired ceramic (LTCC) applications. BBSZ glass helps in reducing the sintering temperature of zinc silicate (ZS) from about 1350°C to around 900°C in the form of ZS-glass composites. The zinc silicate powder was prepared following solid-state reaction technique, while BBSZ glass was prepared by standard melting and quenching method. Expectedly, the sintering studies indicate increasing sintered density between 91% and 97% with increasing sintering temperature from 875°C to 950°C. The sintering density is also seen to increase with increasing content of BBSZ, indicating liquid-phase sintering of the composites. Higher glass content in the composite leads to increased dielectric constant as well as dielectric loss. The results indicate that ZS with the addition of 5 wt.% of BBSZ glass, sintered at 925°C for 3 h, exhibits good microwave dielectric properties with a dielectric constant (e r) of 6.5 and quality factor (Q 9 f) of 20,754 GHz, which is suitable for LTCC applications.

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Section: Methodsmentioning

confidence: 99%

“…33 It is reported for BBSZ-assisted sintering of M-type barium ferrite [Ba(CoTi) 1.5 Fe 9 O 19 ] that liquid-phase BBSZ glass promoted grain growth. 33 Liquid-phase sintering is well reported in the literature. During sintering, the molten liquid phase wets and flows between the grains, causing their rearrangement.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and Microwave Dielectric Properties of BBSZ-Zinc Silicate Based Material for LTCC Applications

Deshmukh

Chaware

Ratheesh

et al. 2021

Journal of Elec Materi

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“…Literally, the bulk of Bi based particle diffuse rapidly and homogeneously through the ZnO grain junction. The formation of the bismuth phase increased the diffusion of the grain boundary and promoted grain growth [7]. It can be noted that the presence of a greater phase of bismuth increases varistor homogeneity.…”

Section: Sem Morphologymentioning

confidence: 99%

Tailoring the structural and optical properties of zinc oxide with addition of bismuth oxide prepared by two step process

SANUSI¹,

Mohamed²,

AHMAD³

et al. 2022

J Met Mater Miner

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This study was done to investigate the impact of bismuth oxide (Bi2O3) composites on the zinc oxide (ZnO) properties for varistor applications. ZnO-Bi2O3 samples were prepared using a two-step process, precipitation, and solid-state method. Bi2O3 was added into ZnO at various concentrations (0, 0.5, 1.0 and 1.5 mol%). All samples were characterized using X-ray diffraction (XRD), Scanning electron microscope (SEM) and UV visible spectroscopy. XRD results have shown that the crystallite size of ZnO-Bi2O3 samples became smaller when Bi2O3 was added from 0.5 mol% to 1.0 mol%. However, the crystallite size of ZnO-Bi2O3 increased over 1.0 mol% of Bi2O3 concentration. The smallest particle and grain size of ZnO-Bi2O3 appeared when composite at 1.0 mol% concentration of Bi2O3. The homogeneity and smallest grain size might be suitable to be used for varistor application. The absorbance of ZnO-Bi2O3 decreased as the Bi2O3 concentration increased. Therefore, adding Bi2O3 at various concentrations into the ZnO host material can tailor its structural and optical properties.

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“…Hence, the peak (002) has the highest intensity when compared to the other peaks and the growth of the films occurs parallel to the substrate. The crystallites size (D) was estimated for all diffraction peaks using Debye formula [25]:…”

Section: X-ray Diffractionmentioning

confidence: 99%

“…The optical absorption coefficient (α) was calculated from transmittance using the relation : 11 log( ), = tT (12) where T is the transmittance and t is the thickness of the films . Therefore, the optical band gap of the samples was determined in this range using Tauc plots according to the following dependence [25] :…”

Section: Optical Propertiesmentioning

confidence: 99%

Effect of substrate temperature on the structural, optical, electrical, and morphological properties of zinc oxide thin films

2022

ijp

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The present paper reports on the effect of substrate temperature on the physical properties of zinc oxide (ZnO) thin films deposited using spray-pyrolysis technique. The films exhibit a polycrystalline nature with a preferred orientation along [002]. Furthermore, the average crystallites size increases with increasing the substrate temperature. The scanning electron microscopy results showed that the films were evenly distributed and homogeneous. The average optical transmittance varies in the range of 62 to 90% depending on the substrate temperature. On the other hand, with increasing the substrate temperature, the absorption coefficient decreases and the optical band gap varies in the range of 3.25 -3.28 eV. The electrical conductivity of films varies between 18 and 58 mS.cm -1 .

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Low‐temperature sintering and electrical properties of BBSZ glass‐doped ZnO‐based multilayer varistors

Cited by 10 publications

References 27 publications

Synthesis and Microwave Dielectric Properties of BBSZ-Zinc Silicate Based Material for LTCC Applications

Synthesis and Microwave Dielectric Properties of BBSZ-Zinc Silicate Based Material for LTCC Applications

Tailoring the structural and optical properties of zinc oxide with addition of bismuth oxide prepared by two step process

Effect of substrate temperature on the structural, optical, electrical, and morphological properties of zinc oxide thin films

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