Composition dependent structural and morphological modifications in nanocrystalline Mn-Zn ferrites induced by high energy γ-irradiation

Angadi, V. Jagadeesha; Anupama, A.V.; Kumar, Rajeev; Choudhary, Harish Kumar; Matteppanavar, Shidaling; Somashekarappa, H.M.; Rudraswamy, B.; Sahoo, Balaram

doi:10.1016/j.matchemphys.2017.07.021

Cited by 57 publications

(11 citation statements)

References 44 publications

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“…The Li ferrite nanoparticles are indexed according to the space group Fd3m [3] and can be characterized as (A)[B2] O4. The "A" and "B" represent the tetrahedral and the octahedral sites respectively [4]. It has been broadly investigated for various applications such as microwave devices and magnetic switching circuits.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

ElFarhatey

Ateia

Mosry³

et al. 2021

Preprint

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Humidity sensor plays a crucial role in determining the efficiency of materials and the precision of apparatuses. To measure and control humidity, a non-stoichiometric Li1.1Co0.3Fe2.1O4 mesopores sensor is synthesized by a modified citrate auto combustion technique. The XRD study confirms that prepared nanoparticles are cubic spinel structures having Fd3m space group. The crystallite size is approximate 36 nm. Thermal analyses measurements confirm that the samples become thermally stable starting from 600 °C. Additionally, the kinetic studies of the prepared samples are calculated via a pseudo-first-order kinetic model. The temperature dependence of AC conductivity is found to increase with increasing the temperature. These observations are explained in various models. The resistivity mechanism of humidity sensors is studied via Complex impedance spectroscopy (CIS). Its impedance data is fitting to a corresponding circuit, to achieve a simulation of the sample under study. This fitting is detected by the Nyquist plot (Cole-Cole). The obtained data confirms that the studied samples are very sensitive to humidity and can be commercially used as a humidity sensing element.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

ElFarhatey

Ateia

Mosry³

et al. 2021

Preprint

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“…They also observed a high value of magnetization when they controlled the hydrothermal temperature at 200 °C for 12 h having manganese-to-zinc mole ratio of 4. Angadi et al [8] have prepared Mn 1−x Zn x Fe 2 O 4 by solution combustion method and investigated γ-irradiation-induced structural transformation. Tsakaloudi et al [9] have prepared Mn-Zn ferrites by solid-state reaction method and reported the specific resistivity, initial permeability, and power losses.…”

Section: Introductionmentioning

confidence: 99%

“…They observed that 0.03 wt% of Bi 2 O 3 has increased the magnetic permeability and thermal stability. Since the substitution plays a critical role in the synthesis of ferrites for a particular application, therefore, many researchers [2][3][4][5][6][7][8][9][10] have investigated substituted Mn-Zn ferrites in the bulk as well as in the nanodimensions. According to the literature survey, there is no report available on the structure, electric, and magnetic characterizations of the chromium-doped manganese-zinc nanoferrites.…”

Section: Introductionmentioning

confidence: 99%

Effect of chromium ions on the structural, magnetic, and optical properties of manganese–zinc ferrite nanoparticles

Sharma

Batoo

Raslan

et al. 2020

J Mater Sci: Mater Electron

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The present work describes the synthesis of Mn 0.5 Zn 0.5 Cr x Fe 2−x O 4 (x = 0.1, 0.2, 0.3) ferrite nanoparticles by solution combustion method and their detailed structural, electrical, magnetic, and optical characterizations. X-ray pattern represents the creation of a single spinel structure. In addition to this, the distribution of cations is also approximated from X-ray study which is then authenticated by the magnetization technique also. The crystalline size (23-21 nm) and lattice parameter (8.39-8.30 Å) are found to shrink with the rise in chromium ions. A decrease in saturation magnetization (0.80-0.64 emu/g) and remanent magnetization (0.05-0.03 emu/g) is found with the rise in chromium ions, while the coercivity is found to increase (83-123 Oe) through the adding of chromium ions. FTIR predicted the two absorption bands (ν 1 and ν 2) near 600 and 400 cm −1. Dielectric constant and loss tangent were observed to decrease with an increase in frequency, whereas AC conductivity attains a nearly constant value at a lower frequency and observed to increase at higher frequencies with the addition of dopant.

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“…The general compositional formula of MnZn ferrites is Mn a Zn (1−a) Fe 2 O 4 . Such compounds are prepared by using a ceramic process technology in four major steps: preparation of the powder from raw materials (organic or inorganic precursors), shaping the powder into cores, sintering, and finishing [8].…”

Section: Introductionmentioning

confidence: 99%

“…The core of any planar transformer is made of soft magnetic materials, which are needed to be easily magnetized, yet they also fulfill a few other requirements: high permeability, high saturation flux density, and low core losses. Several standard core geometries and shapes are commercially available, as defined by the industry and the international standards, e.g., classic EE and EI (E & I shaped cores), as well as ELP (E low profile), EFD (economic flat design), ETD (economic transformer design), PQ (power quality), and RM (rectangular modular) core types; the ER core geometry design (E core with round/circular windings) is the most common in commercial planar transformers [8,9,10,11,12]. The EE and EI cores have two open coil sides, and are used for voltage and current transformers due to their many benefits such as low noise, low magnetising current, fast assembly, and cost-efficiency.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Properties of Manganese-Zinc Soft Ferrite Ceramic for High Frequency Applications

Petrescu

Ioniţă

et al. 2019

Materials

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A soft magnetic MnZn-type ferrite is considered for high frequency applications. First, the morphological, structural, and chemical composition of the material are presented and discussed. Subsequently, by using a vibrating sample magnetometer (VSM), the hysteresis loops are recorded. The open magnetic circuit measurements are corrected by employing demagnetization factors, and by taking into consideration the local magnetic susceptibility. Finally, the hysteresis losses are estimated by the Steinmetz approach, and the results are compared with available commercial information provided by selected MnZn ferrite manufacturers. Such materials are representative in planar inductor and transformer cores due to their typically low losses at high frequency, i.e., up to several MHz, in low-to-medium power applications and providing high efficiency of up to 97%–99%.

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Composition dependent structural and morphological modifications in nanocrystalline Mn-Zn ferrites induced by high energy γ-irradiation

Cited by 57 publications

References 44 publications

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

Effect of chromium ions on the structural, magnetic, and optical properties of manganese–zinc ferrite nanoparticles

Magnetic Properties of Manganese-Zinc Soft Ferrite Ceramic for High Frequency Applications

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