Temperature-dependent dielectric and magnetic properties of NiFe2O4 nanoparticles

Divya, Sasidharan Padmaja; Sivaprakash, P.; Raja, S.; Muthu, S. Esakki; Eed, Emad M.; Arumugam, S.; Oh, Tae Hwan

doi:10.1007/s13204-021-02026-9

Cited by 11 publications

(4 citation statements)

References 40 publications

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“…This spectrum is presented for comparison in order to reflect the absence of an ordered structure of nanoparticles in the initial state without the effect of thermal annealing. In most studies [17][18][19][20][21][22][23][24] devoted to the synthesis of analogous systems in the initial state, nanoparticles are either highly disordered structures or close to amorphous structures.…”

Section: Influence Of Annealing Temperature On Structural Properties and Degree Of Ordering Of Nife 2 O 4 Nanoparticlesmentioning

confidence: 99%

“…NiFe 2 O 4 -type nanoparticles with spinel structures and unique magnetic, conductive properties, and a high degree of degradation resistance, compared with iron oxide nanoparticles, are increasingly used in practical applications due to their properties. Nowadays, there are quite a number of different methods for obtaining NiFe 2 O 4 nanoparticles, which allow obtaining nanoparticles of different geometry and degree of crystallinity [18][19][20][21][22][23][24]. Among all methods, the sol-gel method can be singled out, which allows obtaining nanoparticles of monodisperse size but with a low degree of crystallinity and a large number of vacancy defects in the structure.…”

Section: Introductionmentioning

confidence: 99%

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A Study on the Applicability of NiFe2O4 Nanoparticles as the Basis of Catalysts for the Purification of Aqueous Media from Pollutants

et al. 2021

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The aim of this work is to evaluate the application of NiFe2O4 nanoparticles with spinel structures as the basis of catalysts for the purification of aqueous media from pollutants such as manganese and arsenic. The interest in these catalysts is due to their ease of production and high absorption efficiency, which, together with their magnetic properties, allow the use of nanoparticles for a long time. The sol–gel method, followed by thermal annealing of the samples at different temperatures, was proposed as a method for the synthesis of spinel nanoparticles. The choice of the annealing temperature range of 200–1000 °C is caused by the possibility of estimating changes in the structural properties and the degree of nanoparticles crystallinity. During the study of structural changes in nanoparticles depending on the annealing temperature, it was found that in the temperature range of 200–800 °C, there is an ordering of structural parameters, while for samples obtained at annealing temperatures above 800 °C, there is a partial disorder caused by the agglomeration of nanoparticles with a subsequent increase in their size. According to the results of the studies on the purification of aqueous media from pollutants, it was found that the greatest absorption efficiency belongs to nanoparticles annealed at 500–700 °C, with the purification efficiency of 70–85%, depending on the type of pollutant. The results obtained from the use of nanoparticles as catalysts for the purification of aqueous media show great prospects for their further application on an industrial scale.

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Section: Influence Of Annealing Temperature On Structural Properties and Degree Of Ordering Of Nife 2 O 4 Nanoparticlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Study on the Applicability of NiFe2O4 Nanoparticles as the Basis of Catalysts for the Purification of Aqueous Media from Pollutants

et al. 2021

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“…Due to this magnetic behaviour and their phase structure stability, such functional nanoparticles have been exploited for several potential biomedical applications, such as contrast agents for magnetic resonant imaging, drug delivery systems and magnetic hyperthermia agents, but also as a promising material for the solid-phase extraction of noble metals from leaching solutions of waste electrical and electronic equipment [10]. Additionally, the diversity of the synthesis techniques and parameters makes ferrites popular materials [11,12].…”

Section: Introductionmentioning

confidence: 99%

Exploring Dielectric and Magnetic Properties of Ni and Co Ferrites through Biopolymer Composite Films

Góes,

Figueiró,

Sabóia

et al. 2024

Magnetochemistry

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This study explores the synthesis and characterization of chitosan/gelatine films incorporating nickel ferrite (NiFe2O4) and cobalt ferrite (CoFe2O4) nanoparticles. The magnetic nanoparticles exhibit superparamagnetic behaviour, making them attractive for various applications, including biomedical uses. The X-ray diffraction analysis confirmed the successful synthesis of NiFe2O4 and CoFe2O4 nanoparticles, and the scanning electron micrographs illustrated well-dispersed ferrite nanoparticles within the biopolymer network, despite the formation of some aggregates attributed to magnetic interactions. Magnetization loops revealed lower saturation magnetization values for the composites, attributed to the chitosan/gelatine coating and the dielectric studies, indicating increased dielectric losses in the presence of ferrites, particularly pronounced in the case of NiFe2O4, suggesting interactions at the interface region between the polymer and ferrite particles. The AC conductivity shows almost linear frequency dependence, associated with proton polarization and conduction processes, more significant at higher temperatures for samples with ferrite particles.

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“…A wide variety of practical applications are made possible by many intrinsic perovskite materials features due to the continuous interaction between structure and properties. Ferroelectricity [ 2 , 3 , 4 ], semi-conductivity [ 5 , 6 ], superconductivity [ 5 , 6 ], piezoelectricity [ 7 , 8 ], thermoelectricity [ 9 ], colossal magnetoresistance, ferromagnetism [ 10 ], and half-metallic transport [ 11 , 12 ] are just some of the fascinating physical and chemical properties of perovskites. These oxides are increasingly being used in electronic and magnetic materials, automotive exhaust, water splitting catalysts, fuel cells, battery electrode materials [ 13 ], gas sensors, humidity sensors, microwave devices, high-density data storage, magnetic ferrofluids, magnetic switches, MRI, high-frequency, and power devices are among the applications for these materials [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Te-Incorporated LaCoO3 on Structural, Morphology and Magnetic Properties for Multifunctional Device Applications

Sahadevan

Sivaprakash

Muthu

et al. 2023

IJMS

Self Cite

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A high perovskite activity is sought for use in magnetic applications. In this paper, we present the simple synthesis of (2.5% and 5%) Tellurium-impregnated-LaCoO3 (Te-LCO), Te and LaCoO3 (LCO) by using a ball mill, chemical reduction, and hydrothermal synthesis, respectively. We also explored the structure stability along with the magnetic properties of Te-LCO. Te has a rhombohedral crystal structure, whereas Te-LCO has a hexagonal crystal system. The reconstructed Te was imbued with LCO that was produced by hydrothermal synthesis; as the concentration of the imbuing agent grew, the material became magnetically preferred. According to the X-ray photoelectron spectra, the oxidation state of the cobaltite is one that is magnetically advantageous. As a result of the fact that the creation of oxygen-deficient perovskites has been shown to influence the mixed (Te4+/2−) valence state of the incorporated samples, it is abundantly obvious that this process is of utmost significance. The TEM image confirms the inclusion of Te in LCO. The samples start out in a paramagnetic state (LCO), but when Te is added to the mixture, the magnetic state shifts to a weak ferromagnetic one. It is at this point that hysteresis occurs due to the presence of Te. Despite being doped with Mn in our prior study, rhombohedral LCO retains its paramagnetic characteristic at room temperature (RT). As a result, the purpose of this study was to determine the impacts of RT field dependency of magnetization (M-H) for Te-impregnated LCO in order to improve the magnetic properties of RT because it is a low-cost material for advanced multi-functional and energy applications.

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Temperature-dependent dielectric and magnetic properties of NiFe2O4 nanoparticles

Cited by 11 publications

References 40 publications

A Study on the Applicability of NiFe2O4 Nanoparticles as the Basis of Catalysts for the Purification of Aqueous Media from Pollutants

A Study on the Applicability of NiFe2O4 Nanoparticles as the Basis of Catalysts for the Purification of Aqueous Media from Pollutants

Exploring Dielectric and Magnetic Properties of Ni and Co Ferrites through Biopolymer Composite Films

Influence of Te-Incorporated LaCoO3 on Structural, Morphology and Magnetic Properties for Multifunctional Device Applications

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