Structural Analysis and Magnetic Properties of Lithium-Doped Ni-Zn Ferrite Nanoparticle

Ismail, Mukhlis M.; Jaber, Nasma A.

doi:10.1007/s10948-017-4428-3

Cited by 23 publications

(4 citation statements)

References 17 publications

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“…Since Zn 2+ and Li 1+ are diamagnetic and paramagnetic in nature respectively with 0 μ B (magnetic moment), so the contribution to magnetization mainly originates from magnetic ions with magnetic moments Fe 3+ (5 μ B ) and Co 2+ (3 μ B ). In crystal sublattice, octahedral site is occupied by Fe 3+ [ 52 ], Li 1+ [ 53 ], Co 2+ [ 15 , 54 ] and tetrahedral site by Zn 2+ [ 52 , 53 , 55 ] and Fe 3+ [ 52 ] as already discussed in XPS analysis. Additionally, Li 1+ and Zn 2+ will influence the ions occupancy among two sites such that the net magnetic moment will be affected, ultimately altering the magnetization values.…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, Li 1+ and Zn 2+ will influence the ions occupancy among two sites such that the net magnetic moment will be affected, ultimately altering the magnetization values. Initially non-magnetic Zn 2+ substitute Fe 3+ at tetrahedral site, where some of Fe 2+ ions change into Fe 3+ in this way charge neutrality is balanced [ 52 , 53 ]. Consequently, dilution of Fe 3+ at tetrahedral site weakens the antiferromagnetic coupling between octahedral and tetrahedral sites, thus net magnetic moments would be increased.…”

Section: Resultsmentioning

confidence: 99%

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Correlation between Magnetic and Dielectric Response of CoFe2O4:Li1+/Zn2+ Nanopowders Having Improved Structural and Morphological Properties

et al. 2023

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The vast applicability of spinel cobalt ferrite due to its unique characteristics implies the need for further exploration of its properties. In this regard, structural modification at the O-site of spinel with Li1+/Zn2+ was studied in detail for exploration of the correlation between structural, magnetic, and dielectric properties of the doped derivatives. The CTAB-assisted coprecipitation method was adopted for the synthesis of the desired compositions owing to its cost effectiveness and size controlling ability. Redistribution of cations at T- and O-sites resulted in the expansion of the crystal lattice, but no distortion of the cubic structure was observed, which further supports the flexible crystal structure of spinel for accommodating larger Li1+/Zn2+ cations. Moreover, an XPS analysis confirmed the co-existence of the most stable oxidation states of Zn2+, Li1+, Co2+, and Fe3+ ions with unstable Co3+ and Fe2+ ions as well, which induces the probability of hopping mechanisms to a certain extent and is a well-established behavior of cobalt ferrite nanoparticles. The experimental results showed that Li1+/Zn2+ co-doped samples exhibit the best magnetic properties at dopant concentration x = 0.3. However, increasing the dopant content causes disturbance at both sites, resulting in decreasing magnetic parameters. It is quite evident from the results that dielectric parameters are closely associated with each other. Therefore, dopant content at x = 0.1 is considered the threshold value exhibiting the highest dielectric parameters, whereas any further increase would result in decreasing the dielectric parameters. The reduced dielectric properties and enhanced magnetic properties make the investigated samples a potential candidate for magnetic recording devices.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Correlation between Magnetic and Dielectric Response of CoFe2O4:Li1+/Zn2+ Nanopowders Having Improved Structural and Morphological Properties

et al. 2023

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“…Very strong peaks of kaolinite were identified in the X-ray pattern which means kaolinite is the main phase; Illite and Mica of weak peaks minor phases. From the strongest peak intensity, it is possible to calculate crystal size (D) based on the full width at half maximum (FWHM) using Scherer's equation [32][33][34][35][36][37][38]:…”

Section: Resultsmentioning

confidence: 99%

Impact and Flexural Strength of Kaolinite / Glass Fibers Reinforced Heat-Cured Acrylic Denture

Hussain

Bader

Slewa

et al. 2020

MSF

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Nowadays, most materials used to manufacture denture base are heat-cured PMMA, to overcome the low strength of this material, different methods were used to strengthen the denture base and enhanced their properties. This study investigated the effect of glass fiber woven powder kaolinite (Al2Si2O5 (OH) 4) to influence and strength of flexure. Acrylic and kaolinite powders were mixed together and mixed again with acrylic liquid to prepare hybrid composite samples. Woven glass fiber composite was prepared by inserting woven glass fiber between the two halves of the dough. PMMA reinforced by (0, 20) wt% of woven glass fibers or/and (0, 2, 5, 7) wt% of kaolinite powder to prepare eight experimental groups (n= 7). The fractured surface was an evaluation by scanning electron microscope (SEM). X-ray diffraction and Fourier transforminfrared spectra FTIR tests were used to examine kaolinite powder. Samples were tested with the use of a Charpy testing machine for impact test and Instron tensile testing machine for flexural test after storage in water for 10 days at 37 °C. The results showed woven glass fibers with clay powder together significantly increased the mechanical properties of PMMA.

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“…It can manipulate the magnetic properties of these ferrite materials through a doping process that includes many other metal ions, such as magnesium, zinc, and others. [8][9][10][11] Some researchers focused on low-cost organic flexible electronic devices because of limited flexible inorganic semiconductors. Nanocomposite films can be used in flexible electronics by incorporating inorganic materials into an organic matrix with low cost, lightweight, and easy to fabricate.…”

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confidence: 99%

Structural, Optical, and Morphological Study of Manganese Substituted Cobalt Ferrite and Its Effect on the Magnetic and Dielectric Properties of PVA Composites

Saeed,

Hussain,

Ismail

2024

ECS J. Solid State Sci. Technol.

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Nanopowders of Mn-substituted CoFe2O4 were prepared in different proportions using the sol-gel auto-combustion method and were structurally and morphologically studied. In another step, composites based on polyvinyl alcohol (PVA) with Mn-substituted CoFe2O4 fillers were prepared, and the effect of the Mn-substituted CoFe2O4 on the optical, magnetic, and dielectric properties was studied. X-ray analysis revealed the formation of polycrystalline Mn-substituted CoFe2O4. The results showed a decrease in the lattice constant with Mn2+ substituted and incorporated into the crystal structure of CoFe2O4. The Fourier confirmed the spinel structure of the Mn-substituted CoFe2O4 transform infrared spectrum where absorption bands appeared at 569–561 and 446–407 cm-1, which are attributed to tetrahedral and octahedral groups. The magnetic properties were affected when Mn ions were substituted with CoFe2O4, as shown by the results of VSM. It was observed that the saturation magnetization, remnant magnetization, and coercivity decreased with increasing Mn content. The dielectric constant and loss tangent of PVA/MnxCo1−xFe2O4 were also studied. The difference in the diameters of the substituted and host ions causes the dielectric constant to increase following the substitution of Mn ions.

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Structural Analysis and Magnetic Properties of Lithium-Doped Ni-Zn Ferrite Nanoparticle

Cited by 23 publications

References 17 publications

Correlation between Magnetic and Dielectric Response of CoFe2O4:Li1+/Zn2+ Nanopowders Having Improved Structural and Morphological Properties

Correlation between Magnetic and Dielectric Response of CoFe2O4:Li1+/Zn2+ Nanopowders Having Improved Structural and Morphological Properties

Impact and Flexural Strength of Kaolinite / Glass Fibers Reinforced Heat-Cured Acrylic Denture

Structural, Optical, and Morphological Study of Manganese Substituted Cobalt Ferrite and Its Effect on the Magnetic and Dielectric Properties of PVA Composites

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