Effect of Ti-Substitution on temperature dependence and magnetic disaccommodation of MnZn ferrites

Ji, Haining; Lan, Zhongwen; Zhong, Yu; Yang, Zhi; Liu, Zhao

doi:10.1109/asemd.2009.5306624

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…The general important application of Mn-Zn ferrite materials used in transformer cores, antenna rods, memory chips, high density magnetic recording media, permanent magnets, transducers, activators microwave and computer technology etc. [4][5][6]. Furthermore, researchers using several methods to synthesis nanoferrites such as ball milling method [7], co precipitation method [8], hydrothermal method [9] and auto combustion method [10,11].…”

Section: Introductionmentioning

confidence: 99%

Structural and magnetic properties of manganese zinc ferrite nanoparticles prepared by solution combustion method using mixture of fuels

Angadi

Rudraswamy

Sadhana

et al. 2016

Journal of Magnetism and Magnetic Materials

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The structural analysis and magnetic investigation Mn 1 À x Zn x Fe 2 O 4 with stoichiometry (x ¼ 0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1.0) were synthesized by solution combustion method using mixture of fuel this is first of its kind. As synthesized Mn-Zn nanoferrites were characterized by X-ray Diffractometer (XRD), Transmission electron microscopy (TEM) at room temperature. The magnetic domain relaxation was investigated by inductance spectroscopy (IS) and the observed magnetic domain relaxation frequency (f r ) was increased with the increase in grain size. The Room temperature magnetic properties were studied using vibrating sample magnetometer (VSM). It was observed that the real and imaginary part of permeability (μ′ and μ″), saturation magnetization (M s ), remanance magnetization (M r ) and magneton number (M r /M s ) were decreases gradually with increasing Zn 2 þ concentration. The decrease in the saturation magnetization may be explained as, the Zn 2 þ concentration increases the relative number of ferric ions on the A sites diminishes and this reduces the A-B interaction. Hence synthesized materials are good for high frequency applications.

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Section: Introductionmentioning

confidence: 99%

Structural and magnetic properties of manganese zinc ferrite nanoparticles prepared by solution combustion method using mixture of fuels

Angadi

Rudraswamy

Sadhana

et al. 2016

Journal of Magnetism and Magnetic Materials

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show abstract

“…Incorporating a small quantity of an additive like TiO 2 , SnO 2 , CoO, MgO, Al 2 O 3, Nb 2 O 5 , and Eu 2 O 3 into the spinel matrix was found to modify the magnetic properties of the ferrite materials [11][12][13][14][15][16][17][18]. With its content surpassing its solubility, an added oxide is very likely to segregate to the grain boundaries [6,18].…”

Section: Introductionmentioning

confidence: 99%

Effects of Nb2O5, TiO2, SiO2, and CaO additions on the loss characteristics of Mn-Zn Ferrite

Wang¹,

Hsu²,

Chen³

2014

J Electroceram

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The effects of SiO 2 , CaO, TiO 2 , and Nb 2 O 5 additives on the high-frequency magnetic properties of the Mn 0.3 Zn 0.7 Fe 2 O 4 (MZFT) ferrites were examined in this study. The content of SiO 2 and CaO was kept at 50 ppm and 500 ppm, while that of TiO 2 and Nb 2 O 5 varied respectively from 0 to 3000 ppm and from 0 to 300 ppm. All samples surpassed 95 % theoretical density after sintering at 1300°C with N3T30 composition (50 ppm SiO 2 , 5000 ppm CaO, 3000 ppm TiO 2 , and 300 ppm Nb 2 O 5 ) reporting the highest sintered density. The calculated lattice constants of the ferrites evaluated appeared to be nearly the same (≈0.849 Å) and no second phase was present. It was apparent that the additions of SiO 2 , CaO, TiO 2 , and Nb 2 O 5 exerted no notable impact on the microstructures of the ferrites. The average grain size of the samples sintered at 1300°C ranged from 7.78 μm to 9.76 μm with both intergranular and intragranular pores. Incorporation of partial Ti 4+ and Nb 5+ ions into the lattices shifted the secondary maximum peak of the μ i -T curves from 90°C to lower temperatures (60 to 70°C). The initial permeability of the ferrites was strongly dependent on the additives and the sintering temperature. The initial permeability of the MZFT sample sintered at 1275°C and 1300°C read respectively 5056 and 5222, and that of the N3T30 sample emerged to be 2917 and 3389. Compared to that of pure MZFT ferrite, the TiO 2 and Nb 2 O 5 , SiO 2 and CaO added compositions displayed a nearly 45 % reduction in total power loss, mainly caused by the electrical insulating layers at the grain boundaries, which lowered the eddy current loss. The N3T30 ferrite sintered at 1275°C showed the lowest total power losses of 272 mW/cm 3 at 50°C.

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Structural and Magnetic Consequences of Mn0.6Zn0.4Fe2−x Gd x O4 Ferrite

Torkian

Ghasemi

Razavi

2016

J Supercond Nov Magn

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Effect of Ti-Substitution on temperature dependence and magnetic disaccommodation of MnZn ferrites

Cited by 5 publications

References 11 publications

Structural and magnetic properties of manganese zinc ferrite nanoparticles prepared by solution combustion method using mixture of fuels

Structural and magnetic properties of manganese zinc ferrite nanoparticles prepared by solution combustion method using mixture of fuels

Effects of Nb2O5, TiO2, SiO2, and CaO additions on the loss characteristics of Mn-Zn Ferrite

Structural and Magnetic Consequences of Mn0.6Zn0.4Fe2−x Gd x O4 Ferrite

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