Enhancement of electric and magnetic properties of Mn–Zn ferrite by Ni–Ti ions substitution

Ahmed, Mohamed; Rady, K. E.; Shams, Mahmoud

doi:10.1016/j.jallcom.2014.10.005

Cited by 35 publications

(11 citation statements)

References 38 publications

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“…13 Ti 4+ ion substitution at iron site in ferrites is known to be effective in reducing magnetocrystalline anisotropy and enhancing the electrical resistivity, these properties are suitable for wide range of industrial applications. 14 Mössbauer spectroscopy is an effective method for investigating the local environment of nuclei, and namely the nature of the cationic site distribution. The presence of non-magnetic ions in spinel ferrites is found to alter their magnetic and electric properties.…”

Section: Introductionmentioning

confidence: 99%

Random site occupancy induced disordered Néel-type collinear spin alignment in heterovalent Zn²⁺–Ti⁴⁺ ion substituted CoFe₂O₄

Patange¹,

Desai²,

Meena

et al. 2015

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Random site occupancy induced disordered Néel-type collinear spin alignment in heterovalent Zn²⁺–Ti⁴⁺ ion substituted CoFe₂O₄

Patange¹,

Desai²,

Meena

et al. 2015

RSC Adv.

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“…This decrease can be attributed to the increase in intergranular porosity as a result of discontinuous grain growth [20,21]. The average crystallite size (D) BaZrTiO 5 ceramics has been calculated from x-ray data using Scherrer`s equation [22,23] and was found to increase with increasing Pr 6 O 11 content. The larger crystallite size may be due to the bridging of fine particles that formed the continuous grain boundary networks [24].…”

Section: Methodsmentioning

confidence: 99%

Effect of Pr6O11 Substitution on Structural and Dielectric Properties of BaZrTiO5 Ceramic Materials

Desouky

Rady

2021

Menoufia Journal of Electronic Engineering Research

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In the present work, we studied the effect of the substitution of BaO by Pr 6 O 11 , on the structure, dielectric and electrical properties of BaTiZrO 5 ceramics. Samples of general formula (99.2-x) Bao-xPr 6 O 11-0.5TiO 2-0.3ZrO 2 (x =0.1, 0.2, 0.5 and 0.6) named P 1 , P 2 , P 3 and P 4 respectively were prepared by conventional ceramic method. The structure of the prepared samples was studied using X-ray diffraction, water absorption % and SEM. Addition of Pr 6 O 11 minimized the presence of closed pores and thus led to improved densification. The crystallize size of the prepared samples was calculated and found in the range 22-26 nm. The effect of the substitution by Pr 6 O 11 on breakdown field, dielectric constant, ac resistivity was investigated. Finally, it was found that, the substitution BaO by Pr 6 O 11 improves the physical properties of BaTiZrO 5 ceramics by increasing their break down field, ac resistivity and dielectric constant that makes these ceramics useful in the technological applications.

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“…It is known that Li + transport essentially depends on structural feature of TiO 2 [15][16][17]. The Zr 4+ ionic radius in ZrO 2 is 0.84 Å and CN = 8, whereas the Ti 4+ ionic radius in TiO 2 is 0.61 Å and CN = 6 [37,38]. When Zr 4+ cations are incorporated into the anatase structure, the differ ence in ionic radii and coordination numbers of metal ions favors the increase in unit cell parameters and defect formation.…”

Section: Electrochemical Performances Of Tio 2 and Tio 2 -Zromentioning

confidence: 99%

Nanostructured zirconia-doped titania as the anode material for lithium-ion battery

Гнеденков

Opra

Железнов

et al. 2015

Russ. J. Inorg. Chem.

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Nanostructured TiO 2 and TiO 2 -ZrO 2 (4 wt % ZrO 2 ) in the anatase crystal modification have been synthesized through a template sol-gel route. Morphological and structural features of these compounds have been studied by scanning electron microscopy and Raman spectroscopy. The synthesized materials are porous nanostructured microtubes 10-300 μm in length and 3-5 μm in diameter. The size of nanoparticles forming tubes is 15-25 nm. Doping with zirconia (≤4 wt %) does not change the anatase crystal structure; at the same time, this is accompanied by an increase in the unit cell parameters and in the number of defects in the lattice. The availability of nanostructured TiO 2 -ZrO 2 as an anode material for a Li ion battery has been evaluated by the galvanostatic discharge-charge method. After 20 cycles in the range 3-1 V, the reversible capacity of TiO 2 -ZrO 2 was 140 mA h/g, while the capacity of the undoped TiO 2 was 65 mA h/g. The devel oped method for modification of titania is efficient from the standpoint of producing a promising anode material for Li ion battery.

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Enhancement of electric and magnetic properties of Mn–Zn ferrite by Ni–Ti ions substitution

Cited by 35 publications

References 38 publications

Random site occupancy induced disordered Néel-type collinear spin alignment in heterovalent Zn²⁺–Ti⁴⁺ ion substituted CoFe₂O₄

Random site occupancy induced disordered Néel-type collinear spin alignment in heterovalent Zn²⁺–Ti⁴⁺ ion substituted CoFe₂O₄

Effect of Pr6O11 Substitution on Structural and Dielectric Properties of BaZrTiO5 Ceramic Materials

Nanostructured zirconia-doped titania as the anode material for lithium-ion battery

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Enhancement of electric and magnetic properties of Mn–Zn ferrite by Ni–Ti ions substitution

Cited by 35 publications

References 38 publications

Random site occupancy induced disordered Néel-type collinear spin alignment in heterovalent Zn2+–Ti4+ ion substituted CoFe2O4

Random site occupancy induced disordered Néel-type collinear spin alignment in heterovalent Zn2+–Ti4+ ion substituted CoFe2O4

Effect of Pr6O11 Substitution on Structural and Dielectric Properties of BaZrTiO5 Ceramic Materials

Nanostructured zirconia-doped titania as the anode material for lithium-ion battery

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Random site occupancy induced disordered Néel-type collinear spin alignment in heterovalent Zn²⁺–Ti⁴⁺ ion substituted CoFe₂O₄

Random site occupancy induced disordered Néel-type collinear spin alignment in heterovalent Zn²⁺–Ti⁴⁺ ion substituted CoFe₂O₄