Magnetization studies on aluminium and chromium substituted Ni–Zn ferrites

Sankpal, A. M.; Suryavanshi, S.S.; Kakatkar, S. V.; Tengshe, G.G; Patil, R. S.; Chaudhari, N.D.; Sawant, S. R.

doi:10.1016/s0304-8853(97)01156-6

Cited by 57 publications

(12 citation statements)

References 10 publications

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“…According to this relation, the dependence of µ i on temperature results from the temperature dependence of M s and K 1 assuming that D is constant for the same composition. It is known that the anisotropy field usually decreases much faster with temperature than M s [11] which leads to an initial increase in µ i . Near T c , M s drops suddenly to zero which accounts for the rapid decrease of µ i at T=T c .…”

Section: Magnetic Properties Magnetizationmentioning

confidence: 99%

Magnetic Properties and Electrical Resistivity of Zr4+ Substituted Li-Zn Ferrite

Sattar¹,

El-Sayed²,

Agami³

et al. 2007

American J. of Applied Sciences

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The effect of Zr-substitution on the physical and magnetic properties of Li 0.3+0.5x Zn 0.4 Zr x Fe 2.3-1.5x O 4 ferrites (x=0.0, 0.01, 0.02, 0.03 and 0.05), prepared by the standard ceramic method, has been studied. It is found that the saturation magnetization increases up to x=0.02 and then it decreases. On the other hand, the initial permeability increased while the Curie temperature remained almost constant with increasing x. The behavior of coercivity and remanence ratio was discussed. The composition dependence of the dc electrical resistivity is found to support the hopping conduction mechanism.

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Section: Magnetic Properties Magnetizationmentioning

confidence: 99%

Magnetic Properties and Electrical Resistivity of Zr4+ Substituted Li-Zn Ferrite

Sattar¹,

El-Sayed²,

Agami³

et al. 2007

American J. of Applied Sciences

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“…2, much more viscous flow of the flux obviously coalesce the particles for the NiCuZn samples with small amount of glass addition, which will decrease the thermal energy required to offset the spin alignment, thereby decreasing the Curie temperature in the system [2]. However, too more glass additions can increase T c of samples again, it caused by excessive glass liquid phase [12]. In addition, T c of samples with BBBS glass changes different from others and performs worse, which may be cause by particle consolidation promotion in advance, leading to improvement of sensitiveness to temperature and decrement in T c .…”

Section: Magnetic Propertiesmentioning

confidence: 91%

Microstructure and magnetic properties of low-temperature-fired NiCuZn ferrites with various borosilicate glasses

Zhu

et al. 2015

J Mater Sci: Mater Electron

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The low-temperature-fired NiCuZn ferrites with various borosilicate glasses were prepared by the conventional solid-state reaction method. Different weight percentages of glasses such as (BBBS) were added to low-temperature-fired NiCuZn ferrites. The effects of these glasses on sintering behavior, microstructures and magnetic properties of NiCuZn ferrites were also investigated. It is found that moderate amount of borosilicate glass addition can promote the densification and improve the magnetic properties of NiCuZn ferrites due to the formation of liquid phase, but too more liquid phase formation will deteriorate the magnetic properties. In addition, results also show that addition of BBBS glass can promote best densification of NiCuZn ferrites, but improve magnetic properties worse than addition of ABS or NABS glass. By contrast, the NiCuZn ferrite sample with 0.1 wt% ABS glass can obtain best magnetic properties: l i = 733.01 at 100 kHz, B s = 162.39 mT, B r = 86.59 mT and H c = 35.7 A m -1 .

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“…It is found that the permeability changes slightly and then falls abruptly as the testing temperature increases. The Curie temperature (T c ), or called magnetic transition temperature, can be identified as the temperature at which the permeability falls sharp [15,16]. It is also well known that at T c the ferromagnetic (Fig.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Effects of Nb2O5–WO3 additive on microstructure and magnetic properties of low-temperature-fired NiCuZn ferrites

Zhu

et al. 2015

J Mater Sci: Mater Electron

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The low-temperature-fired NiCuZn ferrites with different amount of Nb 2 O 5 and WO 3 additives were prepared by solid-state reaction method. The effects of Nb 2 O 5 and WO 3 additives on sintering behavior, microstructures and magnetic properties of NiCuZn ferrites were investigated. It is found that Nb 2 O 5 and WO 3 additives overtly improve the densification of samples through grains uniformity and grains growth promotion. The appropriate Nb 2 O 5 and WO 3 additives not only can noticeably increase the initial permeability (l i ) and saturation flux density (B s ), but also can obviously reduce the remanent flux density (B r ) and coercive field strength (H c ). However, too much additive will deteriorate the magnetic properties. By contrast, 0.2 wt% Nb 2 O 5 and 0.5 wt% WO 3 added in NiCuZn ferrites shows excellent magnetic properties: l i = 674.81 at 100 kHz, B s = 142.48 mT, B r = 63.32 mT and H c = 31.39 A m -1 .

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Magnetization studies on aluminium and chromium substituted Ni–Zn ferrites

Cited by 57 publications

References 10 publications

Magnetic Properties and Electrical Resistivity of Zr4+ Substituted Li-Zn Ferrite

Magnetic Properties and Electrical Resistivity of Zr4+ Substituted Li-Zn Ferrite

Microstructure and magnetic properties of low-temperature-fired NiCuZn ferrites with various borosilicate glasses

Effects of Nb2O5–WO3 additive on microstructure and magnetic properties of low-temperature-fired NiCuZn ferrites

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