Characterization of Pb-doped Sr-Ferrites at Room Temperature

Hussain, Shahid; Shah, Nazar Abbas; Maqsood, Asghari; Ali, Abid; Naeem, Muhammad Abubakr; Syed, Waqar Adil

doi:10.1007/s10948-010-1115-z

Cited by 35 publications

(23 citation statements)

References 16 publications

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“…Doping of some appropriate element in a particular proportion can play a vital role in altering the astonishing properties of the materials. For example, doping of Pb in SrFe 12 O 19 lowers its coercivity and remanence due to which general behavior of these ferrites is changed [1,5]. This is also true for many other soft ferrites [6,7].…”

Section: Introductionmentioning

confidence: 97%

“…Their latest use in recording media and microwave devices provided them distinctive ranking in the list of magnetic materials. Owing to their excellent chemical stability and easy and low cost manufacturing, these are being synthesized by variety of methods [1]. Besides co-precipitation, microemulsion [2] and conventional ceramic methods [3], these ferrites are also being synthesized by sol-gel technique [4].…”

Section: Introductionmentioning

confidence: 99%

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Indexing the Diffraction Patterns and Investigating the Crystal Structure of Pb-doped Strontium Ferrites

2013

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Strontium hexaferrites were prepared in powder form by sol-gel auto-ignition technique and Pb was doped in different concentrations to attain the various compositions Sr 1-x Pb x Fe 12 O 19 (x = 0.00, 0.05, 0.10, 0.15, 0.20). Sintering treatment of the samples was made at 800 o C for the development of stable hexagonal phase. X-ray diffraction analysis of the samples was carried out for the confirmation and determination of crystal structure of the material. Data obtained from X-ray diffraction analysis helped in determining various parameters of the samples like lattice parameters, volume of the unit cell, crystallite size, bulk density of the samples, X-ray density and porosity of the samples.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Indexing the Diffraction Patterns and Investigating the Crystal Structure of Pb-doped Strontium Ferrites

2013

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“…One such attempt was to use the subestitution of cations such as Cr 3+ , Al 3+ , Ga 3+ , and Co 2+ on the Fe 3+ sites of hexaferrites to enhance the abovementioned properties [5−7]. These substitutions strongly affect the structural, magnetic, and dielectric properties of hexaferrites [3]. The dielectric and magnetic properties of hexaferrites depend on the method of preparation, composition, and distribution of the substituted cations on the five crystallographic sites [8].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of SrFe12−x Ni x O19 nanoparticles and investigation on their structural, magnetic and dielectric properties

Ghahfarokhi

Hosseini

Shoushtari

2015

Int J Miner Metall Mater

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SrFe 12−x Ni x O 19 nanoparticles (x = 0-1) were synthesized by a combustion sol-gel method. Their structure, dielectric and magnetic properties were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), an LCR metry, and vibrating sample magnetometry (VSM).The results reveal that all samples of Ni doped compounds (SrFe 12−x Ni x O 19 ) with x < 0.2 are single phase. It appears that the Fe 3+ ions are substituted by Ni 2+ ions on the crystallographic sites of the SrFe 12 O 19 structure; however, for x ≥ 0.2, the secondary Ni phase ferrite (NiFe 2 O 3 ) appears, which reduces the saturation magnetization and coercivity. In addition, Ni doping reduces the dielectric constant, dielectric loss, and alternating current (ac) electrical conductivity of the samples. The variation in ac conductivity (σ ac ) with frequency shows that the electrical conductivity in these ferrites is mainly attributed to the electron hopping mechanism.Therefore; all the single-phase Ni doped samples are suitable for use in magnetic recording media and microwave devices.

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“…A study of the properties of the Pb 0.5 Sr 0.5 Fe 12−x Pb x O 19 compound was reported in a previous paper [13]; however, it was not possible to obtain the pure phase in that system because it was not considered the lead evaporation [14]. Thus the measured properties may have been influenced by the presence of secondary phases.…”

Section: Introductionmentioning

confidence: 99%

Magneto-Structural Characterization of Strontium Substituted Lead Hexaferrite

Guerrero-Serrano

Palomares-Sánchez

Mirabal‐García

et al. 2012

J Supercond Nov Magn

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In this work, the magnetic and structural properties of the system Pb 1−x Sr x Fe 12 O 19 (x = 0.1, 0.3, 0.5, 0.7 and 0.9) are reported. The samples were prepared by the traditional ceramic method. All the compounds are isostructural with the strontium hexaferrite (SrFe 12 O 19 ). X-ray powder diffraction was used to carry out the quantitative analysis of phases and to determinate the crystallographic parameters. It was found that the compound consists of only one phase and that the coercivity, remanence and saturation increased with the strontium content. The initial susceptibility was also obtained and results are discussed in terms of the magnetization mechanisms produced by the effect of the substitution on the hexaferrite. Furthermore, Néel temperature measurements indicate a strengthening of the exchange interactions with increasing strontium content.

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Characterization of Pb-doped Sr-Ferrites at Room Temperature

Cited by 35 publications

References 16 publications

Indexing the Diffraction Patterns and Investigating the Crystal Structure of Pb-doped Strontium Ferrites

Indexing the Diffraction Patterns and Investigating the Crystal Structure of Pb-doped Strontium Ferrites

Fabrication of SrFe12−x Ni x O19 nanoparticles and investigation on their structural, magnetic and dielectric properties

Magneto-Structural Characterization of Strontium Substituted Lead Hexaferrite

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