Low frequency dielectric behavior and AC conductivity of polymer derived SiC(O)/HfCxN1-x ceramic nanocomposites

Awin, Eranezhuth Wasan; Sridar, Soumya; Kousaalya, Adhimoolam Bakthavachalam; Vendra, S.S. Lokesh; Koroleva, Ekaterina; Filimonov, A. V.; Vakhrushev, Sergey; Kumar, Ravi

doi:10.1016/j.matchemphys.2020.124122

Cited by 5 publications

(3 citation statements)

References 28 publications

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“…Due to the space charge and misalignment of cations, the conductivity increases with increasing frequency. ,, The conductivities were noted to be 1.43 and 4.03 μΩ –1 cm –1 , corresponding to operating frequencies of 200 kHz and 2 MHz, respectively.…”

Section: Resultsmentioning

confidence: 99%

Experimental Investigation of Calcium-Doped Zinc Aluminate Nanoparticles as a Promising Material for Microwave Applications

Didde,

Dubey,

Panda

et al. 2023

ACS Omega

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Miniaturization of microstrip patch antennas (MPAs) is vital in applications such as wireless networks, mobile devices, global positioning satellites, and upcoming wireless terminals. This miniaturization has led to a demand for new materials with higher permittivity compared to the existing ones. Zinc aluminate (ZnAl2O4) ceramic is an exceptional and versatile material in this context, thanks to its high dielectric permittivity and low tangent loss, making it suitable for microwave applications. This article explores the feasibility of sol–gel-prepared Ca-doped ZnAl2O4 ceramic nanoparticles to be useful in fabricating a MPA. These nanoparticles were examined using X-ray diffraction, which confirmed their polycrystalline structure, and the morphological investigation evidenced the spherical grains having a mean diameter of 16 nm. The dielectric permittivity of the ZnAl2O4Ca nanoparticles is 21.11, with a tangential loss of 0.0247. A prototype MPA made by using Ca-doped ZnAl2O4 nanoparticles showed a return loss of −20.92 dB at a resonance frequency of 6.8 GHz with a bandwidth of 600 MHz. These results indicate that Ca-doped ZnAl2O4 ceramic nanoparticles possess exceptional dielectric characteristics, which make them a promising candidate for MPA applications.

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Section: Resultsmentioning

confidence: 99%

Experimental Investigation of Calcium-Doped Zinc Aluminate Nanoparticles as a Promising Material for Microwave Applications

Didde,

Dubey,

Panda

et al. 2023

ACS Omega

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show abstract

“…17 The current literature shows that transition metal modied PDCs via precursor route improves their mechanical, functional, and electrical properties. [26][27][28][29][30][31][32] In an earlier study, titanium-modied SiOC (or Si(Ti)OC) was synthesized through pyrolysis of titanium butoxide-modied polymethylhydrosiloxane (PMHS) single source precursor and investigated as potential anode material for LIBs. 33 The aspyrolyzed Si(Ti)OC electrode demonstrates good rate capability due to its unique structure of amorphous SiOC matrix with graphene-like free carbon phase and uniformly distributed transition metal oxide crystals.…”

Section: Introductionmentioning

confidence: 99%

“…17 The current literature shows that transition metal modified PDCs via precursor route improves their mechanical, functional, and electrical properties. 26–32…”

Section: Introductionmentioning

confidence: 99%

New insights into the electrochemical performance of precursor derived Si(Nb)OC composites as anode materials for batteries

Vendra,

Singh,

Kumar

2023

RSC Adv.

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Polyvinyl alcohol/poly(3,4-ethylenedioxythiophene): poly(styrenesulfonic acid)/copper (II) oxide nanocomposites as high performance dielectric materials for energy storage applications

Reddy

Pasha²

2023

J Mater Sci: Mater Electron

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Low frequency dielectric behavior and AC conductivity of polymer derived SiC(O)/HfCxN1-x ceramic nanocomposites

Cited by 5 publications

References 28 publications

Experimental Investigation of Calcium-Doped Zinc Aluminate Nanoparticles as a Promising Material for Microwave Applications

Experimental Investigation of Calcium-Doped Zinc Aluminate Nanoparticles as a Promising Material for Microwave Applications

New insights into the electrochemical performance of precursor derived Si(Nb)OC composites as anode materials for batteries

Polyvinyl alcohol/poly(3,4-ethylenedioxythiophene): poly(styrenesulfonic acid)/copper (II) oxide nanocomposites as high performance dielectric materials for energy storage applications

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