Structural and vibrational response in Al modified NiCr2O4

Joshi, Prachi; Saxena, Pallavi; Choudhary, Pankaj; Varshney, M.; Mishra, Ashutosh

doi:10.1063/1.5098728

Cited by 6 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Mn 2p 3/2 and Mn 2p 1/2 peaks are related to Mn 2+ and Mn 3+ , which con rms the formation of Mn 3 O 4 and MnCr 2 O 4 with single lattice oxygen vacancies[18]. The covalent bonding of Mn-O and Mn-Cr-O was observed and tted with O 1s spectrum binding energies of 532 eV in treated Hayness-230 at 1000°C and 1200°C[20,21].…”

mentioning

confidence: 85%

High -Temperature short term / in situ oxidation behaviour of Haynes-230 at 1200 °C

Kaliaraj,

Kirubaharan

et al. 2024

Preprint

View full text Add to dashboard Cite

The reliability and oxidation kinetics behaviour of the Haynes-230 alloy used in hot combustion components for very long-term applications are of great interest to researchers. To recreate the real-time environment, the in situ surface oxidation behaviour of Haynes-230 alloy at high temperature exposures (800, 1000, and 1200°C) is studied in a customized furnace setup equipped with electrochemical impedance spectroscopy (EIS). The heat-treated samples' phase analysis, surface morphology, and chemical composition were evaluated using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). The various forms of surface oxide layer formation were investigated using Raman spectroscopy. The EIS method was also utilized to evaluate the oxidation behaviour of Haynes-230 at various temperatures and time durations. Furthermore, the oxidation kinetics were investigated under thermal loading and unloading conditions, and capacitive behaviour was observed under unloading conditions.

show abstract

mentioning

confidence: 85%

High -Temperature short term / in situ oxidation behaviour of Haynes-230 at 1200 °C

Kaliaraj,

Kirubaharan

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…A possess divalent ions whereas B possess trivalent ions alongwith tetrahedral and octahedral sites according to spinel structure type that may be normal spinel or inverse spinel. 11 Normal spinel oxides due to presence of rich properties employed in many versatile applications with prolonged innovations such as a catalyst, 12 sensors, 13 microwave absorption, 14 photo electrochemistry, 15 bio-medicine, 16 photodegradation, 17 spintronics, 18 in energy storage devices both in supercapacitors, 19 and lithium-ion batteries. 20 Nickel chromite (NiCr 2 O 4 ) being a family member of transition metal oxides with normal spinel structure is under the limelight due to its versatile properties.…”

mentioning

confidence: 99%

Graphene Oxide/Nickel Chromite Nanocomposite: Optimized Synthesis, Structural and Optical Properties

Shafique

Mahmood

Batool

et al. 2021

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

Graphene oxide based nickel chromite nanocomposite (GONC) was synthesized via a cost effective chemical co-precipitation method for energy storage applications. As-synthesized nanomaterial was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, an elemental composition diagnostic via energy dispersive spectrscopy, optical properties via raman spectroscopy, bandgap transition measurements via photoluminescence spectroscopy, and electrochemical impedance spectroscopy and cyclic voltammetry to measure electron-transfer resistance and electrochemical active surface area. A grain size value of about 1.55 nm with nickel particles aggregation over graphene oxide surface results in nickel non-homogenous distribution with spherical grains. This leads to structural defects resulting in a downward shift at about 1430 cm −1 as observed via raman spectra. Also, a electrochemical active surface area of 0.08 cm 2 comparable to GCE surface area leads to better conductivity with a decrease in Rct upto 5.4 KΩ. It is therefore considered to be an ideal material with optimized parameters to be synthesized as tested for energy storage applications.

show abstract

Fowler–Nordheim Law Correlated with Improved Field Emission in Self‐Assembled NiCr₂O₄ Nanosheets

Karmakar

Parey

Mistari

et al. 2020

Physica Status Solidi (a)

View full text Add to dashboard Cite

Electric field emission (FE) properties are measured on self‐assembled NiCr2O4 nanosheets in a planner “diode” arrangement at a base pressure of ≈1.0 × 10−8 mbar. The turn‐on field at FE current density 1 μA cm−2 and the threshold field at FE current density 10 μA cm−2 are observed as 4.10 and 4.94 V μm−1, respectively. The local work function (Φ) is calculated as 4.358 eV, using density functional theory (DFT) in Quantum Espresso code and field enhancement factor (β) intensified up to 2074 from the sharp edges of the NiCr2O4 nanosheet arrays’ emitter surface. An exemplary FE current stability is observed from the current–time plot over a period of 4.5 h. The field enhancement factor (β), inferior turn‐on field, and superior stability compared with any other pristine nanosheet compound recommend its potential application in flat panel display and vacuum micro‐/nanoelectronics.

show abstract

Structural and vibrational response in Al modified NiCr2O4

Cited by 6 publications

References 8 publications

High -Temperature short term / in situ oxidation behaviour of Haynes-230 at 1200 °C

High -Temperature short term / in situ oxidation behaviour of Haynes-230 at 1200 °C

Graphene Oxide/Nickel Chromite Nanocomposite: Optimized Synthesis, Structural and Optical Properties

Fowler–Nordheim Law Correlated with Improved Field Emission in Self‐Assembled NiCr₂O₄ Nanosheets

Contact Info

Product

Resources

About

Structural and vibrational response in Al modified NiCr2O4

Cited by 6 publications

References 8 publications

High -Temperature short term / in situ oxidation behaviour of Haynes-230 at 1200 °C

High -Temperature short term / in situ oxidation behaviour of Haynes-230 at 1200 °C

Graphene Oxide/Nickel Chromite Nanocomposite: Optimized Synthesis, Structural and Optical Properties

Fowler–Nordheim Law Correlated with Improved Field Emission in Self‐Assembled NiCr2O4 Nanosheets

Contact Info

Product

Resources

About

Fowler–Nordheim Law Correlated with Improved Field Emission in Self‐Assembled NiCr₂O₄ Nanosheets