Electrical conductivity and dielectric analysis of NaH2PO4 compound

Rhimi, T.; Leroy, G.; Duponchel, B.; Khirouni, K.; Guermazi, S.; Toumi, Mohamed

doi:10.1007/s11581-018-2494-6

Cited by 19 publications

(5 citation statements)

References 41 publications

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“…[15][16][17][18] The dehydration of CDP can be suppressed sufficiently due to the increase in thermal stability above the phase transition temperature. 19 A solid acid is mixed with other solid acids or oxides 20 to produce composites with higher conductivity values and improved thermal stability. NaH 2 PO 4 (SDP) is an impressive material due to the high stability of sodium ions and potential technological applications.…”

Section: Introductionmentioning

confidence: 99%

A synergistic approach to achieving high conduction and stability of CsH₂PO₄/NaH₂PO₄/ZrO₂ composites for fuel cells

et al. 2022

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Section: Introductionmentioning

confidence: 99%

A synergistic approach to achieving high conduction and stability of CsH₂PO₄/NaH₂PO₄/ZrO₂ composites for fuel cells

et al. 2022

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“…The circuits consist of the parallel combination of resistance (R), constant phase element (CPE), and capacitance (C). Furthermore, the frequency-dependent AC conductivity obeys Jonscher's universal power law" [18]. However, for a macroscopic sample, the physical sense of an equivalentelectric-circuit appears if each unit of the circuit means an elementary process.…”

Section: Methodsmentioning

confidence: 99%

Fundamental and Applied Nanoionics in Imt Ras

Despotuli¹,

Андреева²

2020

NANOCON 2019 Conference Proeedings

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Term and concept of a new branch of science and technology, namely, "nanoionics", were formulated in IMT RAS (1991)(1992). It was the article "A step towards nanoionics". New area R&D devotes to nanoscale fundamentals of fast ionic transport (FIT) in solid-state materials, as well as to methods for design of FITnanomaterials, for description of local FIT-space-temporal processes, for creation of devices with FIT on a nanoscale ("nanoionic devices"), etc. Main achievements of IMT RAS in nanoionics are: (1) new opticallyactive nano-physical-chemical systems Ag(Cu)Hal -M, created in high vacuum (M are rare-earth/transition metals); (2) new classification of solid-state ionic conductors (it distinguishes for the first time a new class of solid state conductors -"advanced superionic conductors", i.e., materials whose crystal structures are closely to optimum for FIT); (3) new scientific direction "nanoionics of advanced superionic conductors"; (4) a crystalengineering of heteroboundaries in FIT-materials and an invention of supercapacitors with coherent polarized heterojunction and record-high frequency-capacitance characteristics ("nanoionic supercapacitors"); ( 5) substantiation about possibility of using of nanoionic supercapacitors in deep-sub-voltage nanoelectronics; (6) definition of ways for heterointegration in supercapacitors of advanced superionic conductors and carbon nanostructures with a high quantum capacitance; (7) theory of a dynamic response of layered nanostructures with ionic hopping transport in a non-uniform potential landscape ("structure-dynamic approach of nanoionics"); (8) new fundamentals of electrostatics related to materials with FIT; (9) proposition of a nonlinear non-local dynamics for FIT-materials. Future nanoionic researches are analyzed in terms of the dynamic theory of information.

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“…The complex impedance (CI) spectroscopy method is adapted to investigate electrical characteristics of compounds viz dielectric property, relaxation phenomenon, and electrical conductivity. [ 31 ] The impedance spectra are symbolized by semicircular arc at low, medium, and high frequency corresponding to the presence of electrode, grain boundary, and grain effect respectively. The CI study is a versatile tool and has both real and imaginary parts represented by

Impedance : Z^{*} = Z^{'} + j Z^{″}

where

Z^{'} = \frac{R}{1 + {(ω τ)}^{2}} and Z^{″} = - \frac{ω R τ}{1 + {(ω τ)}^{2}}

Admittance : Y^{*} = {(Z^{*})}^{- 1}

Complex permittivity: ε^{*} = ε^{'} - j ε ″

Complex modulus: M^{*} = \frac{1}{ε^{*}} = M^{'} + j M^{″}

…”

Section: Experimental Data Analysismentioning

confidence: 99%

“…The CI spectroscopy method is adapted to investigate the electrical characteristics of compounds viz dielectric property, relaxation phenomenon, and electrical conductivity. [ 31 ] The impedance spectra are symbolized by semicircular arc at low, medium, and high frequency corresponding to the presence of electrode, grain boundary, and grain effect, respectively. Figure 5 a shows the Nyquist plot ( Z ′ vs Z ″) of the material.…”

Section: Experimental Data Analysismentioning

confidence: 99%

Studies of Structural, Electrical, and Magnetic Characteristics of Double Perovskite Ceramic: La₂FeMnO₆

Das

Alagarsamy

Choudhary

2021

Physica Status Solidi (b)

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Herein, detailed studies of structural, electrical, and magnetic characteristics of a double perovskite lanthanum iron manganate (La2FeMnO6) are reported. From the Rietveld analysis of X‐ray diffraction data and pattern, the orthorhombic structure of the compound is determined. The least‐squares refined lattice parameters of the compound are: a = 5.5370 Å, b = 7.7988 Å, and c = 5.5069 Å. The frequency–temperature dependence of the dielectric parameters is explained by the Maxwell–Wagner model to provide the polarization mechanism. Analysis of temperature dependence of impedance and modulus data of different frequency has shown the contributions of grains and grain boundaries in the electrical characteristics of the material. This analysis also shows the semiconductor characteristics, through a negative temperature coefficient of resistance nature. Based on both impedance and modulus spectroscopy, the dielectric relaxation process is found to be of a non‐Debye type. The study of scaling behavior of impedance and modulus data suggests that relaxation phenomena are nearly independent of temperature. Detailed analysis of the frequency dependence of conductivity data of different temperatures using the Jonscher's power law has shown the existence of different types of conduction mechanisms in the material. The nature of the current–voltage (I–V) curves suggests that the material behaves as a semiconductor diode type to be used for the rectifying purpose. The conduction mechanism follows the space charge‐limited conduction (SCLC) process which is obtained from leakage current analysis. The study of magnetic hysteresis of the material suggests that the material exhibits soft ferromagnetic ordering.

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Electrical conductivity and dielectric analysis of NaH2PO4 compound

Cited by 19 publications

References 41 publications

A synergistic approach to achieving high conduction and stability of CsH₂PO₄/NaH₂PO₄/ZrO₂ composites for fuel cells

A synergistic approach to achieving high conduction and stability of CsH₂PO₄/NaH₂PO₄/ZrO₂ composites for fuel cells

Fundamental and Applied Nanoionics in Imt Ras

Studies of Structural, Electrical, and Magnetic Characteristics of Double Perovskite Ceramic: La₂FeMnO₆

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Electrical conductivity and dielectric analysis of NaH2PO4 compound

Cited by 19 publications

References 41 publications

A synergistic approach to achieving high conduction and stability of CsH2PO4/NaH2PO4/ZrO2 composites for fuel cells

A synergistic approach to achieving high conduction and stability of CsH2PO4/NaH2PO4/ZrO2 composites for fuel cells

Fundamental and Applied Nanoionics in Imt Ras

Studies of Structural, Electrical, and Magnetic Characteristics of Double Perovskite Ceramic: La2FeMnO6

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A synergistic approach to achieving high conduction and stability of CsH₂PO₄/NaH₂PO₄/ZrO₂ composites for fuel cells

A synergistic approach to achieving high conduction and stability of CsH₂PO₄/NaH₂PO₄/ZrO₂ composites for fuel cells

Studies of Structural, Electrical, and Magnetic Characteristics of Double Perovskite Ceramic: La₂FeMnO₆