Magnetic, dielectric and sensing properties of manganese substituted copper ferrite nanoparticles

Kumar, Е. Ranjith; Jayaprakash, R.; Devi, G. Sarala; Reddy, P. Siva Prasada

doi:10.1016/j.jmmm.2013.11.051

Cited by 73 publications

(11 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ɛ is determined as the asymptotic value calculated from a.c. impedance measurements at low frequency (determined in the range between 1Hz and 10Mhz) for all samples are shown in Table 2. This mechanism can be determined by Debye shielding length (L D ) with equation (3). If L D <L/2, the potential barriers exist in the grain boundary region due to capture states at these interfaces 12 .…”

Section: Methodsmentioning

confidence: 99%

“…Magnetic particles exhibiting superparamagnetic behavior display higher saturation magnetization and low coercivity having potential applications e.g., as magnetic resonance imaging contrast agents, in ferrofluids based technology, information storage device, gas sensors 2 . For instance, a recent application of mixed ferrite Mn-Cu is a methane gas sensor for the oil industry 3 . The magnetic properties and gassensing efficiency of the material depends on its microstructural properties, which are related to its method of preparation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic and Electrical Properties of MnxCu1-xFe2O4 Ferrite

et al. 2016

View full text Add to dashboard Cite

In the present work, mixed manganese-copper ferrite of composition Mn x Cu 1-x Fe 2 O 4 (within x=0. 40, 0.42, 0.44, 0.46, 0.48 and 0.50) have been investigated for their electric and magnetic properties such as dc resistivity, Curie temperature, saturation magnetization. Mn x Cu 1-x Fe 2 O 4 ferrite samples were prepared by uniaxial pressing from the oxide mixture, synthesized at 1000°C during 45 hours and finally heated to 1200°C by 5h, at room atmosphere. The X-ray diffractograms show that the samples with different compositions were formed by compact structure spinel with cubic cell. The saturated magnetization of the Mn x Cu 1-x Fe 2 O 4 ferrites increased with x up to 0.46, which presented the smallest coercitive field. All samples showed hysteresis characteristic of soft magnetic materials. This electrical behavior is compatible with an insulator. The results were analyzed in the framework of grain/barrier model.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic and Electrical Properties of MnxCu1-xFe2O4 Ferrite

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Gas sensors: Due to sensing properties [130,131] ferrites are can be used as gas sensors, the response of Mg ferrite (MgFe2O4) for methane (CH4), hydrogen sulfide (H2S), liquefied petroleum (LPG), and ethanol gas (C2H5OH) [132]. Cu-ferrite (CuFe2O4) [133] and Zn ferrite (ZnFe2O4) [134,135] showed a good response for hydrogen sulfide (H2S) reported by many researchers.…”

Section: Electronics Device Applicationmentioning

confidence: 99%

“Ferrites”: Synthesis, Structure, Properties and Applications

Mullick

2021

Materials Research Foundations

View full text Add to dashboard Cite

Ferrites synthesis method and characterization techniques are attracting huge attentions of researchers because of their wide scope of uses in numerous areas. The ferrites include high resistivity, saturation magnetization, permeability, coercivity and low power losses. The above-mentioned useful ferrites characteristics make them appropriate for use in different applications. These ferrites are used in biomedical field for cancer cure and MRI. Electronic applications are transformers, transducers, and inductors which are also made using ferrites and also used in making magnetic fluids, sensors, and biosensors. Ferrite is a profoundly helpful material for many electrical and electronic applications. It has applications in pretty much every domestic device like LED bulb, mobile charger, TV, microwave, fridge, PC, printer, etc. This review mainly focus on the synthesis method, characterization techniques, and implementation of FNPs. This Chapter presents various methods used for ferrites preparation with distinctive examples, their advantages as well as limitations in detail. Ferrites properties like structural, optical, electrical and magnetic with their characterization techniques and various applications in the areas of biomedical, electronics, and environment are also discussed.

show abstract

“…This makes it a good contender for the range of applications as soft magnets and low-loss materials at high frequencies [14]. ZnFe 2 O 4 NPs have been widely applied in techniques and electronics as gas sensors [15], absorbent for hot gas desulphurization [16], semiconductor photocatalyst [17], low-Curie temperature magnetic fluid in energy conversion devices [18] [19,20]. In the present investigation, Co 60 c-ray dose of 100 kGy was selected in order to report the tailored magnetic properties of sol-gel synthesized nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Structural and magnetic characterization of 100-kGy Co60 γ-ray-irradiated ZnFe2O4 NPs by XRD, W–H plot and ESR

Raut

Jadhav

Shengule

et al. 2016

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

Nanocrystalline spinel ferrite was prepared by sol-gel auto-combustion technique and sintered at 600°C for 12 h. Single-phase cubic spinel structure of zinc ferrite was confirmed through X-ray diffractometry. Several structural and magnetic properties of ZnFe 2 O 4 NPs were studied after Co 60 c-irradiation with total gamma dose of 50 and 100 kGy. An average crystallite size was determined from the full width at half maximum of strongest reflection (311) by using Scherrer's approximation. Williamson-Hall plot (graph against bcosh and 4sinh) was used to re-evaluate the measured crystallite size and to estimate the strain distribution in terms of g%. Lattice constant (a) initially increased slightly to 8.441 Å with c-50 kGy and then decreased dramatically with total dose of c-100 kGy. Frustrated behaviour in peak shift to lower and higher 2h side can be seen in XRD after c-irradiation to ZnFe 2 O 4 NPs. FT-IR spectra confirmed the formation of ferrite phase and redistribution of cations in (A) and [B] sites of ZnFe 2 O 4 spinel structure. In the first derivative peak of ESR spectroscopy, gyroscopic spitting factor (g-value) and linewidth (DH PP ) were used to deliberate the c-radiation damage in investigated ferrimagnetic nanoparticles. Experimental results revealed that the saturation magnetization (M s ), coercivity (H c ) and magneton number (n B ) of ZnFe 2 O 4 NPs were found to be increased after gamma irradiation dose of c-100 kGy. Graphical AbstractKeywords Ferrite nanoparticles Á Sol-gel autocombustion Á Williamson-Hall plot Á ESR Á Radiation damage & Anil V. Raut

show abstract

Magnetic, dielectric and sensing properties of manganese substituted copper ferrite nanoparticles

Cited by 73 publications

References 29 publications

Magnetic and Electrical Properties of MnxCu1-xFe2O4 Ferrite

Magnetic and Electrical Properties of MnxCu1-xFe2O4 Ferrite

“Ferrites”: Synthesis, Structure, Properties and Applications

Structural and magnetic characterization of 100-kGy Co60 γ-ray-irradiated ZnFe2O4 NPs by XRD, W–H plot and ESR

Contact Info

Product

Resources

About