Various polarization mechanisms involved in ionic crystals

Kumar, Dinesh; Ahmad, Noor Azlinda; Kumar, Vipin; Jha, Vikash Kumar; Kulshrestha, Shobha; Saini, Richa; Shekhawat, M. S.

doi:10.1063/5.0003510

Cited by 2 publications

(1 citation statement)

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“…Figure 3 illustrates these polarizations in a general dielectric spectrum as a function of frequency. Ionic polarization occurs in ionic crystals, where positive and negative ions within the material are arranged to cancel each other's dipole moments, except when subjected to an external electric field, inducing polarization 77 . Dipole polarization arises when the dipoles in a material attempt to follow a rapidly changing field in a microwave or high‐frequency field, causing energy transfer and subsequent temperature change.…”

Section: Fundamentals Of Dsmentioning

confidence: 99%

Dielectric characterization of fiber‐ and nanofiller‐reinforced polymeric materials

Quader,

Narayanan,

Caldona

2024

J of Applied Polymer Sci

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This review provides an in‐depth analysis of the electrical responses and relaxation behaviors of various polymeric materials including fiber‐reinforced polymer composites, polymer nanocomposites (PNC), and nanofiller‐reinforced polymeric films and coatings using dielectric spectroscopy (DS). The underlying theory of DS, corresponding instrumentation, various dielectric parameters, relevant equations, interpretations, and polarization mechanisms are thoroughly explored. The impact of synthetic and natural fibers and a diverse range of nanofillers on the dielectric responses and relaxation mechanisms of fiber‐reinforced composites, and PNC and films, respectively, are also examined. For each summarized article, we provide an overview of the composite or film preparation, followed by concise explanations of the dielectric behaviors under diverse conditions, including variations in temperature, frequency, moisture levels, fiber/filler ratios, and chemical treatment. In essence, this review contributes to a nuanced understanding of the intricate relationship between material structure, properties, and performance via DS data interpretation across a spectrum of scenarios.

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Section: Fundamentals Of Dsmentioning

confidence: 99%