Structural, morphological and compositional properties of La3+ substituted Mg–Zn ferrite interlocked nanoparticles by co-precipitation method

Bugad, R. A.; Mane, Tejas; Navale, B. B.; Thombare, J. V.; Babar, A.R.; Karche, B. R.

doi:10.1007/s10854-016-5699-3

Cited by 7 publications

(5 citation statements)

References 16 publications

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“…The dislocation line density ( ) [41] of ferrite samples was found to increase by raising the La 3+ content and is reported in Table 1. The calculated values of X-ray density ( ) [42,43] are 2) show the same trend with variation in La 3+ content as the experimental lattice constant, and similar behavior as reported by Ganure et al [45].…”

Section: It Is Observed In Table 1 That Experimental Lattice Constant (supporting

confidence: 87%

“…It can be seen that bulk density (dB) of the samples increased with increments in La 3+ concentrations (x), with the range of bulk density (dB) being 4.09±0.00205 -4.65±0.00233 g/cm3 . The porosity (P) percentage[42,44] decreased from 22.97 % to 14.52 %, with an increase in La 3+ concentrations (x) because of the rise in the bulk density (dB). The A-site hopping length, 'HA' and B-site hopping length 'HB' are linked with the experimental lattice constant.…”

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confidence: 99%

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Controllable synthesis of La3+ dopedZn0.5Co0.25Cu0.25Fe2−xL
Rehman
¹
,
Morley
²
,
Amin
³

et al. 2020
Ceramics International
58
1
4
0
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0.5 0.25 0.25 2− 4 (x = 0.0, 0.0125, 0.025, 0.0375, 0.05) ferrite powders with uniform distribution of ions and close-packed configuration were prepared via sol-gel autocombustion route. XRD spectra showed the formation of spinel-phase cubic crystalline structure. SEM results revealed that the irregularity in size and shape of particles increases, and particle distribution uniformity decreases with La 3+ concentration. Moreover, each curve of the UV-vis spectra revealed two optical energy band gaps. More importantly, DC resistivity (ρ) and the activation energy (∆ ) have minimum values at x=0.0375. The dielectric loss was explained according to Maxwell-Wager space charge polarization. The P-E loop showed the ferroelectric nature of the synthesized samples. Moreover, VSM results revealed that the as-prepared samples possessed maximum saturation magnetization (MS = 56.77 ± 0.0283) and 8-12 GHz operating microwave frequency (ωm) range at x = 0.0375. All these results show the potential of 0.5 0.25 0.25 1.9625 0.0375 4 ferrite powders for X-band microwave applications. Highlights• Zn0.5Co0.25Cu0.25Fe2-xLaxO4 ferrite powders via simple sol-gel auto-combustion.• Crystallite size and lattice constant decrease with increasing La 3+ cations • Optical band gap energies and DC resistivity have minimum values at x=0.0375.• The ferroelectric nature of all the samples was confirmed using the P-E loop.• Maximum magnetization saturation was observed at x = 0.0375.

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Section: It Is Observed In Table 1 That Experimental Lattice Constant (supporting

confidence: 87%

mentioning

confidence: 99%

Controllable synthesis of La3+ dopedZn0.5Co0.25Cu0.25Fe2−xL
Rehman
¹
,
Morley
²
,
Amin
³

et al. 2020
Ceramics International
58
1
4
0
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“…The intensity of LaFeO 3 peak has increased with the increase in La 3+ ion concentration. Furthermore, another secondary phase of Fe 2 O 3 (♠) 2θ = 33.22° (ICDD PDF #86–2368) was detected with an increase in lanthanum ion concentration [40–43]. The appearance of secondary phase of a) LaFeO 3 (♣) in the Ni-Zn-La ferrite nanoparticles demonstrates that La 3+ ion substitution has a solubility limit in the spinel lattice; b) Fe 2 O 3 (♠) in the Ni-Zn-La ferrite nanoparticles shows that there was more than fifty mole percentage of the standard iron oxide content in the formula of spinel ferrite [38].…”

Section: Resultsmentioning

confidence: 99%

Influence of La3+ Substitution on Structure, Morphology and Magnetic Properties of Nanocrystalline Ni-Zn Ferrite

et al. 2017

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Lanthanum substituted Ni-Zn ferrite nanoparticles (Ni0.5Zn0.5LaxFe1-xO4; 0.00 ≤x≤ 1.00) synthesized by sol-gel method were presented. X-ray diffraction patterns reveal the typical single phase spinel cubic ferrite structure, with the traces of secondary phase for lanthanum substituted nanocrystals. In addition, the structural analysis also demonstrates that the average crystallite size varied in the range of 21–25 nm. FTIR spectra present the two prominent absorption bands in the range of 400 to 600 cm-1 which are the fingerprint region of all ferrites. Surface morphology of both substituted and unsubstituted Ni-Zn ferrite nanoparticle samples was studied using FESEM technique and it indicates a significant increase in the size of spherical shaped particles with La3+ substitution. Magnetic properties of all samples were analyzed using vibrating sample magnetometer (VSM). The results revealed that saturation magnetization (Ms) and coercivity (Hc) of La3+ substituted samples has decreased as compared to the Ni-Zn ferrite samples. Hence, the observed results affirm that the lanthanum ion substitution has greatly influenced the structural, morphology and magnetic properties of Ni-Zn ferrite nanoparticles.

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“…Mg-Zn ferrites have been subjected by a large number of research group to modify the different properties using different synthesis routes and conditions [12,14,[35][36][37][38][39][40][41][42][43][44][45][46][47][48][49], where some of them are dealt with tailoring electrical properties and/or magnetic properties of Mg-Zn ferrites. The motivation of our present research is to enhance the electrical resistivity of the Mg-Zn ferrites by Y 3+ substitution for Fe 3+ with favorable magnetic properties that is one of the significant characteristics of ferrites for applications in high frequency devices.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, determination of band gap of semiconducting materials is very important for their practical application. Therefore, the present paper reports the investigation of mechanical properties, high temperature magnetic properties along with FTIR spectra and UV-vis measurement of Mg-Zn ferrites.Mg-Zn ferrites have been subjected by a large number of research group to modify the different properties using different synthesis routes and conditions [12,14,[35][36][37][38][39][40][41][42][43][44][45][46][47][48][49], where some of them are dealt with tailoring electrical properties and/or magnetic properties of Mg-Zn ferrites. The motivation of our present research is to enhance the electrical resistivity of the Mg-Zn ferrites by Y 3+ substitution for Fe 3+ with favorable magnetic properties that is one of the significant characteristics of ferrites for applications in high frequency devices.…”

mentioning

confidence: 99%

Mechanical behavior, enhanced dc resistivity, energy band gap and high temperature magnetic properties of Y-substituted Mg–Zn ferrites

Ali

Khan

Hossain

et al. 2020

Mater. Res. Express

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We report the synthesis of Y-substituted Mg-Zn [Mg 0.5 Zn 0.5 Y x Fe 2−x O 4 (0x0.05)] ferrites using conventional standard ceramic technique. The samples were characterized by x-ray diffraction (XRD) analysis, field emission scanning electron microscopy (FESEM), FTIR spectroscopy, UV-Vis spectroscopy and quantum design physical properties measurement system (PPMS). XRD patterns confirm the single phase cubic spinel structure up to x=0.03 and appearance of a secondary phase of YFeO 3 for higher Y contents. FESEM images depict the distribution of grains and EDS spectra confirmed the absence of any unwanted element. Completion of solid state reaction and formation of spinel structure has been revealed from FTIR spectra. The FTIR data along with lattice constant, bulk density and porosity were further used to calculate the stiffness constant (C ij ), elastic constant and Debye temperatures. Mechanical stability of all studied compositions is confirmed from C ij using Born stability conditions. Brittleness and isotropic nature are also confirmed using Poisson's ratio and anisotropy constants, respectively. The enhancement of dc electrical resistivity (10 5 Ω cm to 10 6 Ω cm) with Y content is observed. The energy band gap (increased with Y contents) is found in good agreement with dc electrical resistivity. Ferrimagnetic to paramagnetic phase change has been observed from the field dependent high temperature magnetization curves. The magnetic moments and saturation magnetization were found to be decreased with increasing temperature. The Curie temperature (T c ) has been measured from temperature dependent magnetic moment (M-T) and initial permeability (μ′ i -T) measurements and found to be in good agreement with each other. Decrease in T c with Y content is due to redistribution of cations and weakening of the exchange coupling constant. The magnetic phase transition has been analyzed by Arrott plot and found to have second order phase transition. The dc resistivity endorses the prepared ferrites are suitable for high frequency and high temperature magnetic device applications as well.Mg-Zn ferrite is one of the most used soft ferrites because of its high electrical resistivity, low cost, low dielectric loss, high mechanical hardness and superior environmental stability [13]. Mg-Zn ferrites with higher resistivity (10 6 -10 7 Ω cm) make its suitability in high frequency applications [13]. Most of (∼ 90%) Mg 2+ ions are located on the B-sites and small fraction (∼10%) occupies in the A-sites [14,15]. However, the Zn 2+ ions have a preference to occupy A-sites in the spinel lattice [16,17]. The Fe 3+ ions are distributed on both A-and B-sites [18]. Therefore, the physical properties of the Mg-Zn ferrites are determined by the cations distribution over the A-and B-sites. The physical properties can be altered by introducing the different metallic ions results the cations distribution modification on the A-and B-sites. The factors that determine cation distributions are ionic radius, charge, site preference and le...

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Structural, morphological and compositional properties of La3+ substituted Mg–Zn ferrite interlocked nanoparticles by co-precipitation method

Cited by 7 publications

References 16 publications

Controllable synthesis of La3+ dopedZn0.5Co0.25Cu0.25Fe2−xL
Rehman
¹
,
Morley
²
,
Amin
³

et al. 2020
Ceramics International
58
1
4
0
View full text Add to dashboard Cite

Controllable synthesis of La3+ dopedZn0.5Co0.25Cu0.25Fe2−xL
Rehman
¹
,
Morley
²
,
Amin
³

et al. 2020
Ceramics International
58
1
4
0
View full text Add to dashboard Cite

Influence of La3+ Substitution on Structure, Morphology and Magnetic Properties of Nanocrystalline Ni-Zn Ferrite

Mechanical behavior, enhanced dc resistivity, energy band gap and high temperature magnetic properties of Y-substituted Mg–Zn ferrites

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Structural, morphological and compositional properties of La3+ substituted Mg–Zn ferrite interlocked nanoparticles by co-precipitation method

Cited by 7 publications

References 16 publications

Controllable synthesis of La3+ dopedZn0.5Co0.25Cu0.25Fe2−xLRehman1, Morley2, Amin3 et al. 2020Ceramics International58140View full textAdd to dashboardCite

Controllable synthesis of La3+ dopedZn0.5Co0.25Cu0.25Fe2−xLRehman1, Morley2, Amin3 et al. 2020Ceramics International58140View full textAdd to dashboardCite

Influence of La3+ Substitution on Structure, Morphology and Magnetic Properties of Nanocrystalline Ni-Zn Ferrite

Mechanical behavior, enhanced dc resistivity, energy band gap and high temperature magnetic properties of Y-substituted Mg–Zn ferrites

Contact Info

Product

Resources

About

Controllable synthesis of La3+ dopedZn0.5Co0.25Cu0.25Fe2−xL
Rehman
¹
,
Morley
²
,
Amin
³

et al. 2020
Ceramics International
58
1
4
0
View full text Add to dashboard Cite

Controllable synthesis of La3+ dopedZn0.5Co0.25Cu0.25Fe2−xL
Rehman
¹
,
Morley
²
,
Amin
³

et al. 2020
Ceramics International
58
1
4
0
View full text Add to dashboard Cite