Structural, transport and collosal dielectric properties of A-site substituted La<sub>2</sub>NiO<sub>4</sub>

Saleem, M.; Singh, D.N.; Mishra, Ashutosh; Varshney, Dinesh

doi:10.1088/2053-1591/aaecf7

Cited by 17 publications

(3 citation statements)

References 42 publications

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“…The refinement leads to good agreement between the calculated and experimental diffraction patterns are shown in figure 3(c). The structural variables obtained after refinement are given in table 2 which are in good agreement with the values reported by M Saleem et al [33]. The crystal structure in a 3D view of the raw materials and La 2 NiO 4 are also shown in the same figure.…”

Section: Phase Formation and Crystal Structure Analysissupporting

confidence: 85%

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High temperature study of dielectric and electrical conduction behaviour of La₂NiO₄

Katheriya,

Upadhyay

2023

Phys. Scr.

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Materials showing negative permittivity have attracted considerable attention from researchers on account of their notable applications in electronic and electromagnetic devices. Discovering materials exhibiting negative permittivity is a challenging task. Very few single-phase oxides have been reported as negative permittivity materials. In this work, we have attempted to investigate the dielectric properties of La2NiO4 to explore the possibility of negative permittivity. To achieve the goal, powder, and ceramic of La2NiO4 have been synthesized by the conventional solid-state reaction method. Rietveld refinement of the X-ray diffraction data studies has confirmed the tetragonal structure and space group I4/mmm. The Dielectric properties and AC conductivity have been studied in the frequency range of 20 Hz–2 MHz and over a wide temperature range (30 °C–600 °C). The permittivity of La2NiO4 is found to be negative at all the measured frequencies and temperatures. The Drude model fitted the experimental data very well, suggesting that negative permittivity behavior can be assigned to the plasma oscillation of conducting electrons. The trend of AC conductivity with frequency is similar to the skin effect observed in metals. The variation of DC conductivity with temperature indicated small polaron hopping conduction mechanism. Analysis of reactance (Z′′) suggested inductive electrical character in the tested frequency and temperature range. Room temperature negative permittivity behavior of La2NiO4 makes it a potential candidate for practical electronic and electromagnetic devices that work in the Radio-frequency range. Furthermore, this work will add a new member to the family of Perovskite oxides showing tunable negative permittivity.

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Section: Phase Formation and Crystal Structure Analysissupporting

confidence: 85%

“…(a). The peaks were matched with the crystallographic open card (COD) 1533571 for La 2 NiO 4 reported in the literature[33]. Aside from the La 2 NiO 4 peaks, there are a few peaks of secondary phase LaNiO…”

mentioning

confidence: 56%

High temperature study of dielectric and electrical conduction behaviour of La₂NiO₄

Katheriya,

Upadhyay

2023

Phys. Scr.

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“…The refinement pattern was in good agreement with the calculated and experimental diffraction patterns as reported previously. 19 The structural parameters obtained after final refinement are presented in Table 1.…”

Section: Phase Analysis and Crystal Structurementioning

confidence: 99%

Establishing the correlation of negative permittivity and AC conductivity of La_2−xSr_xNiO₄ (x = 0, 0.1, 0.3, 1.0) for microwave shielding applications

Katheriya,

Nirala,

Upadhyay

2024

J. Mater. Chem. C

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New simple La‐Ni complexes as efficient precursors for functional LaNiO₃‐based ceramics

Гавриков

Belova

Yapryntsev

et al. 2021

Applied Organom Chemis

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Perovskite LaNiO 3 is of immense significance in a range of fields such as heterogeneous catalysis. Herein, new convenient approach for preparing LaNiO 3 via thermolysis of new simple complexes, [Ni (bpyis 1,10-phenanthroline), is reported. These first examples of unambiguously characterized LaNiO 3 precursors are chemically stable and can be synthesized rapidly in good yields. While virtually monophasic LaNiO 3 can be prepared from 2 via only 3-h annealing on air at 800 C, there are always minor admixtures in oxide samples prepared from 1. Peculiarities of intrinsic thermal transformations of 1 and 2 affecting such difference have been revealed. Thus,

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Structural, transport and collosal dielectric properties of A-site substituted La₂NiO₄

Cited by 17 publications

References 42 publications

High temperature study of dielectric and electrical conduction behaviour of La₂NiO₄

High temperature study of dielectric and electrical conduction behaviour of La₂NiO₄

Establishing the correlation of negative permittivity and AC conductivity of La_2−xSr_xNiO₄ (x = 0, 0.1, 0.3, 1.0) for microwave shielding applications

New simple La‐Ni complexes as efficient precursors for functional LaNiO₃‐based ceramics

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Structural, transport and collosal dielectric properties of A-site substituted La2NiO4

Cited by 17 publications

References 42 publications

High temperature study of dielectric and electrical conduction behaviour of La2NiO4

High temperature study of dielectric and electrical conduction behaviour of La2NiO4

Establishing the correlation of negative permittivity and AC conductivity of La2−xSrxNiO4 (x = 0, 0.1, 0.3, 1.0) for microwave shielding applications

New simple La‐Ni complexes as efficient precursors for functional LaNiO3‐based ceramics

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Structural, transport and collosal dielectric properties of A-site substituted La₂NiO₄

High temperature study of dielectric and electrical conduction behaviour of La₂NiO₄

High temperature study of dielectric and electrical conduction behaviour of La₂NiO₄

Establishing the correlation of negative permittivity and AC conductivity of La_2−xSr_xNiO₄ (x = 0, 0.1, 0.3, 1.0) for microwave shielding applications

New simple La‐Ni complexes as efficient precursors for functional LaNiO₃‐based ceramics