Structure and magnetic properties of a new hexaferrite (Ba,Pb)(Fe,Ti)9O15

Häßner, Manuel; Винник, Д.А.; Niewa, Rainer

doi:10.1016/j.ceramint.2020.10.115

Cited by 12 publications

(3 citation statements)

References 19 publications

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“…The qualitative analysis of the XPS spectra was performed with help of the database by Moulder et al [28]. For example, an XPS survey spectrum of BaFe 10.73(19) Ti 0.91 (7) O 19 is shown in Figure 8. Among the five overview spectra of the studied samples, the presented graph shows the highest titanium signal (∼458 eV) due to the highest degree of substitution present.…”

Section: Valence States From Xpsmentioning

confidence: 99%

“…By adding defined amounts of other cations the iron can be partly substituted while retaining the M-type structure. Furthermore, other types with differing structures and compositions can be obtained, where until today new types are discovered [6,7]. Aliovalent substitution of iron(III) by tetravalent titanium in the M-type ferrite was reported [8][9][10][11][12][13][14][15][16], where the structure could be retained to a limited extent [8].…”

Section: Introductionmentioning

confidence: 99%

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Crystal Structure and XPS Study of Titanium-Substituted M-Type Hexaferrite BaFe12−xTixO19

Mehnert,

Häßner,

Dreer

et al. 2023

Inorganics

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The M-type barium hexaferrite substituted with titanium, BaFe12−xTixO19, was synthesized from sodium carbonate flux and the obtained single crystals with a maximum degree of substitution of up to about x = 0.9 were characterized. XPS measurements were carried out for the identification of side products and in particular in order to assign the valence states of the transition-metal constituents. Due to the aliovalent exchange of iron(III) with titanium(IV), an additional charge balance needs to occur. No titanium(III) was detected, while the amount of iron(II) increased in the same order of magnitude as the amount of titanium(IV); thus, the major charge balancing is attributed to the reduction of iron(III) to iron(II). According to the XPS data, the amount of titanium(IV) typically is slightly higher than that of iron(II). This is in line with a tendency to a minor formation of vacancies on the transition-metal sites becoming more important at higher substitution levels according to PXRD and WDS measurements, completing the picture of the charge-balance mechanism. XRD taken on single crystals indicates the distribution of titanium and vacancies over three of the five transition-metal sites.

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Section: Valence States From Xpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crystal Structure and XPS Study of Titanium-Substituted M-Type Hexaferrite BaFe12−xTixO19

Mehnert,

Häßner,

Dreer

et al. 2023

Inorganics

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“…Furthermore, there is no R-block in the Y-type. M, W, and X-types are created by stacking S and R-blocks in various combinations, with the R-type containing only the R-block [7]. T-block exist independently with chemical composition Me2Fe8O14 where is Me is divalent cation like Sr2, Zn2, Ba2.…”

mentioning

confidence: 99%

Structural, Morphology, Electrical Polarization and FTIR Properties of Zn Substituted T-type Hexagonal Ferrites

Abbas¹,

Sadiq²,

Sadiq³

et al. 2022

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A series of divalent Zn substituted T-type hexagonal ferrite material having the composition (x= 0.0, 0.02, 0.06, 0.1) was synthesized by using the sol-gel auto combustion method. Structural, morphological, optical, and electrical properties of T-type hexagonal ferrite were explored by using an X-ray diffractometer, scanning electron microscopy, Fourier transform infrared spectroscopy and Precision multiferroic II. The X-ray diffraction (XRD) patterns showed the single hexagonal phase ferrites for all the samples. With the substitution of the ions, the change in the values of lattice constants ‘a’, ‘c’ and unit cell volume was observed. The Debye Scherrer formula was used to calculate the crystallite size which was determined to be varied in the range of 26.3nm to 28.3nm. FTIR spectra also indicated that the present synthesized material had single-phase hexagonal structure. SEM micrographs revealed the agglomeration of small grains. The average grain size was found to be 0.331um which might be suitable for microwave absorption applications. The Polarization verse Electric field (P-E) loops unveiled the increase in saturation and remnant polarization. The P-E loops also exhibited the lossy behavior after substitution and the increase in lossy behavior with substitution results in an increase in conductivity of the material.

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Comparative analysis of adsorption of Pb(II) ions by different hexagonal nanoferrites synthesized using the flash-combustion method

Ramadan,

Alzaidy,

Almutairi

et al. 2023

Appl. Phys. A

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Structure and magnetic properties of a new hexaferrite (Ba,Pb)(Fe,Ti)9O15

Cited by 12 publications

References 19 publications

Crystal Structure and XPS Study of Titanium-Substituted M-Type Hexaferrite BaFe12−xTixO19

Crystal Structure and XPS Study of Titanium-Substituted M-Type Hexaferrite BaFe12−xTixO19

Structural, Morphology, Electrical Polarization and FTIR Properties of Zn Substituted T-type Hexagonal Ferrites

Comparative analysis of adsorption of Pb(II) ions by different hexagonal nanoferrites synthesized using the flash-combustion method

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