Magnetic and dielectric properties of NiCuZn ferrite with optimized Cu content and sintered by a two-step process

Ji, Xinran; Chen, Tengqian; Shen, Chang Hong; Zhao, Ye; Zhou, Ke; Sun, Meiling; Yu, Yinghua; Fan, Lining; Zheng, Hui; Wu, Qiong; Zhang, Qiangyuan; Zhang, Yang

doi:10.1016/j.jallcom.2021.162906

Cited by 19 publications

(9 citation statements)

References 39 publications

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“…An insignificant shift was observed in the peaks of the two methods of preparation. In the case of co-precipitation method, the observed FTIR peak at 2427 cm −1 was assigned to stretching vibration of O-H group [31]. The free absorbed water may indicate the presence of hydroxyl groups in the samples, which was reported in previously published works [32,33].…”

Section: Ftir Analysissupporting

confidence: 59%

Influence of preparation method on structural, optical and magnetic properties of synthesized Zn_0.5Mg_0.5−xNi_xFe₂O₄ nano-ferrite

Khalafallah,

Siddig,

Algethami

et al. 2024

Mater. Res. Express

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Structural, optical, and magnetic properties of ferrite series with chemical formula Zn0.5NixMg0.5-xFe2O4 (x = 0.0, 0.1, 0.2, 0.3 and 0.4) were investigated. Co-precipitation and sol-gel methods were used to synthesis the samples and to investigate further the influence of these preparation methods on the properties of Zn0.5NixMg0.5-xFe2O4 nano-ferrites. X-ray diffraction and Fourier-transform infrared spectroscopy revealed that the samples crystallize in a cubic spinel structure with space group Fd3m:1. The crystallite size of Zn0.5NixMg0.5-xFe2O4 nanoparticles was decreased from 19.15 to 11.65 nm with increasing Ni content for the samples of co-precipitation method, while the opposite behavior was observed in case of sol-gel method which was increased from 13.90 to 21.90 nm. Moreover, the optical investigation by UV-visible spectroscopy revealed that the energy band gap of the samples of co-precipitation method ranged (6.04 - 6.08) eV compared to (4.44 - 4.50) eV of sol-gel method. For both methods, substitution of Ni+2 by Mg+2 in Zn0.5NixMg0.5-xFe2O4 affects the remanent magnetization (Mr), coercivity (Hc) and saturation magnetization (Ms) suggesting the super-paramagnetic behavior of the samples. The substitution of Ni resulted in small values of coercivity ranged 0.758 to 164.62 Oe. The Ms was ranged 20.39 to 127.57 emu/g and an enhancement in magnetization was observed which increases the value of Ms that was found to be maximum with x=0.4 of co-precipitation method (127.57 emu/g). The magnetic behavior of synthesized Ni doped nanoparticles makes them suitable candidate for sensing and high-frequency applications and for use in hyperthermia treatment. The characterization outcomes may recommend that co-precipitation method is preferred over sol-gel method for refined structure and preferable properties of Zn0.5NixMg0.5-xFe2O4 nanoparticles.

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Section: Ftir Analysissupporting

confidence: 59%

Influence of preparation method on structural, optical and magnetic properties of synthesized Zn_0.5Mg_0.5−xNi_xFe₂O₄ nano-ferrite

Khalafallah,

Siddig,

Algethami

et al. 2024

Mater. Res. Express

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“…A more than 60% increase in M s was observed for plasma-treated ferrite specimens and the highest value was 74.46 emu/g, which agreed with that previously reported for La-doped NiCuZn ferrites [ 41 ]. Saturation magnetization reported in this research is the highest magnetization observed for pure NiCuZn ferrite and also greater than for ferrite mixed with additives, i.e., Cu, Tb, Co, and Bi 2 O 3 -Nb 2 O 5 [ 22 ]. That escalation in saturation magnetization is associated with direct contact of ferrites specimens with highly energetic microwave plasma [ 42 ].…”

Section: Resultsmentioning

confidence: 94%

“…Researchers have adopted numerous routes such as the sol–gel auto-combustion technique [ 15 ], solid-state route [ 16 ], hydrothermal method [ 17 ], co-precipitation [ 18 ], and egg white technique [ 19 ] for the synthesis of NiCuZn ferrite. Magneto-electric characteristics can be tuned using different additives such as Bi 2 O 3 , V 2 O 5 , and Cu [ 20 , 21 , 22 ]. Microwave heating has also been utilized to synthesize NiCuZn ferrite due to several benefits over other techniques such as minimum reaction time, rapid and selective heating, and direct interactions of dipoles and charges in pristine specimens [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Magnetic and Dielectric Properties of Ni0.25Cu0.25Zn0.50Fe2O4 Magnetic Nanoparticles through Non-Thermal Microwave Plasma Treatment for High-Frequency and Energy Storage Applications

et al. 2022

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Spinel ferrites are widely investigated for their widespread applications in high-frequency and energy storage devices. This work focuses on enhancing the magnetic and dielectric properties of Ni0.25Cu0.25Zn0.50 ferrite series through non-thermal microwave plasma exposure under low-pressure conditions. A series of Ni0.25Cu0.25Zn0.50 ferrites was produced using a facile sol–gel auto-ignition approach. The post-synthesis plasma treatment was given in a low-pressure chamber by sustaining oxygen plasma with a microwave source. The structural formation of control and plasma-modified ferrites was investigated through X-ray diffraction analysis, which confirmed the formation of the fcc cubical structure of all samples. The plasma treatment did not affect crystallize size but significantly altered the surface porosity. The surface porosity increased after plasma treatment and average crystallite size was measured as about ~49.13 nm. Morphological studies confirmed changes in surface morphology and reduction in particle size on plasma exposure. The saturation magnetization of plasma-exposed ferrites was roughly 65% higher than the control. The saturation magnetization, remnant magnetization, and coercivity of plasma-exposed ferrites were calculated as 74.46 emu/g, 26.35 emu/g, and 1040 Oe, respectively. Dielectric characteristics revealed a better response of plasma-exposed ferrites to electromagnetic waves than control. These findings suggest that the plasma-exposed ferrites are good candidates for constructing high-frequency devices.

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“…The effect of copper on the morphology and the magnetic properties of NiZn-ferrites has been reported in the literature [7]. Having the development of materials able to be sintered at around 900 • C as the primary goal in the great majority of the investigated cases, the Cu atomic content was much more than 10% of the total divalent cations (Ni, Zn, Cu) [8][9][10]. Such high Cu contents cannot be afforded in the development of monolithic power ferrites where power loss density is an important performance indicator and needs to be kept as low as possible.…”

Section: Introductionmentioning

confidence: 95%

The Effect of Sintering Temperature on the Densification and Magnetic Performance of NiCuZn-Ferrites (CuO: 0–6 wt.%)

Zaspalis,

Kogias,

Zaspalis

2024

Materials

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This article reported on the effect of Cu-content and sintering temperature on the magnetic permeability and power losses of monolithic iron-deficient NiCuZn-ferrite components with low Cu-contents aimed to be used for power applications at frequencies up to 1 MHz. In particular NiαZnb1−xCuxFe1.9O4 ferrite compositions are investigated with a constant Ni/Zn atomic ratio a/b = 0.9 and 0 < x < 0.017. As found, the addition of Cu enables the achievement of good magnetic performance at lower sintering temperatures and, therefore, lower production cost. At all Cu-contents, the initial permeability as a function of the sintering temperature passes through a maximum above which structural deterioration due to asymmetric grain growth occurs. The temperature at which this maximum permeability occurs depends on the Cu content and coincides with the achievement of the maximum density of 5.1–5.2 g cm−3 (relative density ~97%). At Cu-contents x = 0.006–0.012 and sintering temperatures 1200–1100 °C power losses (tan(δ)/μ at 1 MHz, 25 °C) οf 50 × 10−6 could be achieved and initial permeabilities (10 kHz, 0.1 mT, 25 °C) of around 400 with very good frequency and temperature stability. At CuO content higher than 4 wt.% (i.e., x > 0.012) and sintering temperatures higher than 1150 °C, pronounced microstructural disturbances due to asymmetric grain growth result in low permeabilities and high losses. It is suggested that at low CuO contents and low sintering temperatures, the densification enhancement may not proceed through Cu-rich phase segregation but through the creation of oxygen vacancies.

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Magnetic and dielectric properties of NiCuZn ferrite with optimized Cu content and sintered by a two-step process

Cited by 19 publications

References 39 publications

Influence of preparation method on structural, optical and magnetic properties of synthesized Zn_0.5Mg_0.5−xNi_xFe₂O₄ nano-ferrite

Influence of preparation method on structural, optical and magnetic properties of synthesized Zn_0.5Mg_0.5−xNi_xFe₂O₄ nano-ferrite

Enhancement of Magnetic and Dielectric Properties of Ni0.25Cu0.25Zn0.50Fe2O4 Magnetic Nanoparticles through Non-Thermal Microwave Plasma Treatment for High-Frequency and Energy Storage Applications

The Effect of Sintering Temperature on the Densification and Magnetic Performance of NiCuZn-Ferrites (CuO: 0–6 wt.%)

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Magnetic and dielectric properties of NiCuZn ferrite with optimized Cu content and sintered by a two-step process

Cited by 19 publications

References 39 publications

Influence of preparation method on structural, optical and magnetic properties of synthesized Zn0.5Mg0.5−xNixFe2O4 nano-ferrite

Influence of preparation method on structural, optical and magnetic properties of synthesized Zn0.5Mg0.5−xNixFe2O4 nano-ferrite

Enhancement of Magnetic and Dielectric Properties of Ni0.25Cu0.25Zn0.50Fe2O4 Magnetic Nanoparticles through Non-Thermal Microwave Plasma Treatment for High-Frequency and Energy Storage Applications

The Effect of Sintering Temperature on the Densification and Magnetic Performance of NiCuZn-Ferrites (CuO: 0–6 wt.%)

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Influence of preparation method on structural, optical and magnetic properties of synthesized Zn_0.5Mg_0.5−xNi_xFe₂O₄ nano-ferrite

Influence of preparation method on structural, optical and magnetic properties of synthesized Zn_0.5Mg_0.5−xNi_xFe₂O₄ nano-ferrite