AC electrical conductivity and dielectric properties of doping induced molecular ferroelectric diisopropylammonium bromide

Kabir, Ekramul; Khatun, M.; Mustafa, Raihan J.; Singh, Kiran; Rahman, Muklesur

doi:10.1088/2053-1591/ab2c79

Cited by 3 publications

(2 citation statements)

References 46 publications

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“…Dielectric relaxation usually denotes reorientational processes in condensed matter that can be detected by dielectric spectroscopy [15]. Generally speaking, while temperature is above Curie temperature, then permittivity γ of a normal ferroelectric usually is suitable for the Curie-Weiss law, and dielectric characteristics can be described by equation [16] In order to calculate ECE of PBLZST ceramics, P-E loops and I-E curves of PLZT and PLHT ceramics under various temperatures are shown in Figs.…”

Section: Resultsmentioning

confidence: 99%

“…The surface morphologies of PLHT and PLZT were determined by eld-emission scanning electron microscope (FE-SEM; S 4800, Hitachi, Japan). Dielectric relaxation usually denotes reorientational processes in condensed matter that can be detected by dielectric spectroscopy [15]. Generally speaking, while temperature is above Curie temperature, then permittivity γ of a normal ferroelectric usually is suitable for the Curie-Weiss law, and dielectric characteristics can be described by equation [16]: 1/ γ =(T-T o )/C, (T>T C ), where T o and C are Curie-Weiss temperature and Curie-Weiss constant, respectively.…”

Section: Dielectric Characteristic Was Conducted By An Impedance Analmentioning

confidence: 99%

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High Efficiency Refrigeration and Pyroelectric Energy Harvesting Applications of Lead Titanate Based Relaxer Ceramic

Zhang

Huang

et al. 2020

Preprint

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Relaxer ferroelectrics are highly attractive in electrocaloric due to large breakdown electric field and wide phase transition temperatures, which has great potential applications in solid-state cooling. In this work, relaxer ferroelectrics are synthesized by a traditional solid state reaction method. Phase transition and relaxer characteristics are studied by temperature dependent dielectric spectrums. Temperature dependent ferroelectric properties are also studied to calculate electrocaloric effect. Maximum value of refrigeration efficiency η ( ΔT/ΔE ) is about 0.079 K·cm/kV, our result lays a foundation and provides a reference for studying high efficiency solid-state electrocaloric refrigeration. Pyroelectric energy harvesting are studied, maximum pyroelectric energy harvesting is 279 kJ/cm 3 .

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Section: Resultsmentioning

confidence: 99%

Section: Dielectric Characteristic Was Conducted By An Impedance Analmentioning

confidence: 99%

High Efficiency Refrigeration and Pyroelectric Energy Harvesting Applications of Lead Titanate Based Relaxer Ceramic

Zhang

Huang

et al. 2020

Preprint

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Supplement to the paper “A collection of 505 papers on false or unconfirmed ferroelectric properties in single crystals, ceramics and polymers [Front. Phys. 14(6), 63301 (2019)]”

Tylczyñski

2021

Front. Phys.

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Dielectric, impedance, modulus spectroscopy and AC conductivity studies on novel organic ferroelectric diisopropylammonium chloride (dipaCl)

Khatun

Kabir²

2021

J. Adv. Dielect.

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Organic molecular ferroelectric diisopropylammonium chloride (dipaCl) was successfully synthesized using diisopropylamine, hydrochloric acid (57%) and methanol solution. Dielectric permittivity, impedance, modulus spectroscopy and conductivity were systematically studied by Capacitance–Conductance ([Formula: see text] – [Formula: see text] measurements in the temperature range of 373–445 K. Dielectric property tests clearly show that the organic molecular ferroelectric dipaCl obeys Curies–Weiss law 1/[Formula: see text] = ([Formula: see text]–[Formula: see text]/[Formula: see text]. The real (Z′) and imaginary (Z′′) parts of the electrical modulus were calculated from the various values of 𝜀′ and 𝜀′′. It is shown that AC conductivity satisfies the relation [Formula: see text], where the power exponent [Formula: see text] depends on temperature and frequency. From Arrhenius equation, the activation energies [Formula: see text]and [Formula: see text] are also calculated which describes the complete conduction mechanism of dipaCl.

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AC electrical conductivity and dielectric properties of doping induced molecular ferroelectric diisopropylammonium bromide

Cited by 3 publications

References 46 publications

High Efficiency Refrigeration and Pyroelectric Energy Harvesting Applications of Lead Titanate Based Relaxer Ceramic

High Efficiency Refrigeration and Pyroelectric Energy Harvesting Applications of Lead Titanate Based Relaxer Ceramic

Supplement to the paper “A collection of 505 papers on false or unconfirmed ferroelectric properties in single crystals, ceramics and polymers [Front. Phys. 14(6), 63301 (2019)]”

Dielectric, impedance, modulus spectroscopy and AC conductivity studies on novel organic ferroelectric diisopropylammonium chloride (dipaCl)

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