Comparison Study of Structural and Magnetic Properties of Magnesium-Substituted Nickel–Zinc Ferrites Synthesized by Solid-State and Sol–Gel Routes

Gangaswamy, D. R. S.; Varma, M. Chaitanya; Bharadwaj, S.R.; Rao, K. Sambasiva; Rao, K. H.

doi:10.1007/s10948-015-3188-1

Cited by 21 publications

(7 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, it was reported that the substitution of Al 3+ in the Ni 0.75 Zn 0.25 Fe 2− x Al x O 4 system led to a decrease in the saturation magnetization ( M s ) from 65.40 to 6.75 emu/g, and the replacement of Ni 2+ by Co 2+ increased the M s value from 75.9 emu/g for Ni 0.5 Zn 0.5 Fe 2 O 4 to 80.6 emu/g for Ni 0.25 Co 0.25 Zn 0.5 Fe 2 O 4 . It was also reported that the doping of Cd 2+ , Cr 3+ , Mn 3+ , Ca 2+ , and Mg 2+ , affected Ni–Zn ferrites in the same way as Al 3+ doping . In addition, some cations such as V 5+ and Cu 2+ doped into Ni‐Zn ferrites could form a liquid‐phase during sintering owing to their low melting point …”

Section: Introductionmentioning

confidence: 94%

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Yang

Liu

et al. 2019

J Am Ceram Soc

View full text Add to dashboard Cite

Novel polycrystalline Ni0.5Zn0.5Sm0.025HoxFe1.975−xO4 (x = 0‐0.06) ferrites were fabricated by a traditional solid‐state reaction sintering method. The codoping effects of Sm and Ho on the microstructure, magnetism, and high‐frequency performance of Ni–Zn ferrites were investigated. The substitution of Sm3+ and Ho3+ ions led to an apparent increase in the lattice constants. However, further increasing the addition of both dopants introduced SmFeO3 or HoFeO3 foreign phases at the boundaries of the polycrystalline grains. As the content of Ho3+ ions increased, the relative density and average grain size of the specimens decreased accordingly. Moreover, the substitution of Sm3+ clearly decreased the saturation magnetization and complex permeability, which further decreased with the doping of Ho3+. The evolution of the Curie temperature showed an opposite trend, reaching the highest temperature of 278°C when x = 0.03. Similarly, the coercivity and resonance frequencies also displayed opposite trends compared to those of the saturation magnetization and complex permeability. The codoping of Sm3+ and Ho3+ more effectively lowered the magnetic and dielectric loss tangent of the specimens compared with the undoped or single dopant modified ferrites.

show abstract

Section: Introductionmentioning

confidence: 94%

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Yang

Liu

et al. 2019

J Am Ceram Soc

View full text Add to dashboard Cite

show abstract

“…[10][11][12] Magnetic properties of ferrite synthesized by different types of sol-gel method were investigated and compared to ferrite produced by conventional ceramic methods. [13][14][15][16][17][18][19] It results that ferrites which exhibit approximately the same permeability and coercive field are achieved by both sol-gel and solid-state methods. However, the magnetic performances at high frequency are not presented in these papers so it is difficult to know if this process is well-adapted to the production of low-loss ferrite.…”

Section: Introductionmentioning

confidence: 99%

Study of magnetic properties of NiZnCu ferrite synthesized by Pechini method and solid-state reactions

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Moreover, it exhibits higher mechanical strength, lower coercive force, and favourable chemical steadiness [6]. It has been widely employed in a variety of components for use at high frequencies, such as transformers, inductors, multilayer chip inductors, and modern communication [7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and investigation of structural, elastic, and electrical properties of cobalt and magnesium substituted Ni–Zn spinel ferrite nanoparticles

Hasan¹,

Azhdar

2023

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The sol-gel auto-combustion approach was used to create Ni0.4M0.2Zn0.4Fe2O4 (M=Ni2+, Mg2+, and Co2+) nanoparticles. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive X-ray spectroscopy (EDS), and an inductance-capacitance-resistance (LCR) meter were used to analyse the samples’ structural, elastic, and electrical properties. In all samples, the XRD patterns obtained indicated the formation of a monophasic cubic spinel structure with no identifiable impurity phase, which was supported by EDS investigations. The introduction of substituting ions, specifically Mg2+ and Co2+, into Ni-Zn ferrite nanoparticles results in an increase in the lattice parameter. The lattice parameter for Ni-Zn is 8.377Ao, while for the substituted nanoparticles it is 8.389 and 8.388 Ao for Mg2+ and Co2+ respectively. Additionally, the crystallite size of the substituted nanoparticles increases to 46.57 nm from 40.75 nm for Ni-Zn. However, the X-ray density of the substituted nanoparticles decreases to 5.180 and 5.337 g/cm3 for Mg2+ and Co2+ respectively, from 5.358 g/cm3 for Ni-Zn. The elastic parameters, such as the Young's modulus, Debye temperature, bulk modulus, and rigidity modulus, were calculated. The good elastic characteristics of Ni-Zn ferrite were confirmed and may be explained by the lower lattice parameter values and smaller crystallite sizes. Temperature and frequency effects on dielectric behaviour and AC electrical conductivity (σAC) were investigated. At ambient temperature, the dielectric characteristics, specifically the dielectric constant (ε') and loss tangent (tanδ), were computed over a frequency range of 100 Hz to 2 MHz. The compositions display normal dielectric properties, which are attributed to the interfacial polarisation following the Maxwell-Wagner model. The AC conductivity of nanoparticles was shown to decrease when Mg2+ and Co2+ were substituted into Ni-Zn ferrite. Furthermore, the AC conductivity diminishes with decreasing frequency, which is a sign of ionic conductivity. There was a direct relationship between the temperature and the values of ε', tanδ, and σAC for different ions.

show abstract

Comparison Study of Structural and Magnetic Properties of Magnesium-Substituted Nickel–Zinc Ferrites Synthesized by Solid-State and Sol–Gel Routes

Cited by 21 publications

References 30 publications

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Study of magnetic properties of NiZnCu ferrite synthesized by Pechini method and solid-state reactions

Synthesis and investigation of structural, elastic, and electrical properties of cobalt and magnesium substituted Ni–Zn spinel ferrite nanoparticles

Contact Info

Product

Resources

About

Comparison Study of Structural and Magnetic Properties of Magnesium-Substituted Nickel–Zinc Ferrites Synthesized by Solid-State and Sol–Gel Routes

Cited by 21 publications

References 30 publications

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni0.5Zn0.5Sm0.025HoxFe1.975−xO4 ferrites

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni0.5Zn0.5Sm0.025HoxFe1.975−xO4 ferrites

Study of magnetic properties of NiZnCu ferrite synthesized by Pechini method and solid-state reactions

Synthesis and investigation of structural, elastic, and electrical properties of cobalt and magnesium substituted Ni–Zn spinel ferrite nanoparticles

Contact Info

Product

Resources

About

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites