Bi‐YIG system: The effect of cation relocation on structural, hyperfine, and magnetic properties

Niyaifar, M.; Mohammadpour, Hory; Aezami, A.; Amighian, J.

doi:10.1002/pssb.201552563

Cited by 11 publications

(3 citation statements)

References 24 publications

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“…It reaches its highest value of 19.293 emu/g for x = 0.08, and its lowest value of 15.636 emu g −1 for x = 0.2. Similar work was done by Niyaifar et al [27] when doping YIG with diamagnetic Bi 2+ ions. To explain this behavior, two types of alterations will be taken into consideration.…”

Section: Magnetic Characterizationsupporting

confidence: 68%

Investigating the role of diamagnetic Cd²⁺ ions on the structural, optical, and magnetic properties of YIG

et al. 2021

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In this study, Y3-xCdxFe5O12 (0.0 ≤ × ≤0.2) powders were synthesized via the co-precipitation method at calcination temperature 1100 °C. The phase formation of YIG was confirmed from X-ray powder diffraction (XRD) and Fourier Transform Infrared (FTIR) technique. The change of the band-gap energy, determined from the analysis of UV-visible spectroscopy, with the particle size was in agreement with the quantum confinement effect for x between 0.02 and 0.2. The magnetization study showed a non-monotonic change in the saturation magnetization and the coercivity with the increase of Cd2+ content. This behavior is an indication of both effect of particle size and the concentration of the doped Cadmium. The Mӧssbauer spectroscopy analysis confirmed the existence of Fe3+ in both octahedral and tetrahedral sites and the non-existence of Fe2+.

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Section: Magnetic Characterizationsupporting

confidence: 68%

Investigating the role of diamagnetic Cd²⁺ ions on the structural, optical, and magnetic properties of YIG

et al. 2021

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“…Although there have been several recent papers that have investigated the various uses of yttrium iron garnet, including its derivatives containing traces of other lanthanides and actinides, − in all these papers that report Mössbauer spectral results, the observed spectra are of marginal use − or the published analysis of the spectra is cursory and sometimes of limited value. ,,− …”

Section: Introductionmentioning

confidence: 99%

Mössbauer Spectral Properties of Yttrium Iron Garnet, Y₃Fe₅O₁₂, and Its Isovalent and Nonisovalent Yttrium-Substituted Solid Solutions

et al. 2016

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Several high-resolution Mössbauer spectra of yttrium iron garnet, Y3Fe5O12, have been fit as a function of temperature with a new model based on a detailed analysis of the spectral changes that result from a reduction from the cubic Ia3̅d space group to the trigonal R3̅ space group. These spectral fits indicate that the magnetic sextet arising from the 16a site in cubic symmetry is subdivided into three sextets arising from the 6f, the 3d, 3d, and the 1a, 1b, 2c sites in rhombohedral-axis trigonal symmetry. The 24d site in cubic Ia3̅d symmetry is subdivided into four sextets arising from four different 6f sites in R3̅ rhombohedral-axis trigonal symmetry, sites that differ only by the angles between the principal axis of the electric field gradient tensor and the magnetic hyperfine field assumed to be parallel with the magnetic easy axis. This analysis, when applied to the potential nuclear waste storage compounds Y(3-x)Ca(0.5x)Th(0.5x)Fe5O12 and Y(3-x)Ca(0.5x)Ce(0.5x)Fe5O12, indicates virtually no perturbation of the structural, electronic, and magnetic properties upon substitution of small amounts of calcium(II) and thorium(IV) or cerium(IV) onto the yttrium(III) 24c site as compared with Y3Fe5O12. The observed broadening of the four different 6f sites derived from the 24d site results from the substitution of yttrium(III) with calcium(II) and thorium(IV) or cerium(IV) cations on the next-nearest neighbor 24c site. In contrast, the same analysis applied to Y(2.8)Ce(0.2)Fe5O12 indicates a local perturbation of the magnetic exchange pathways as a result of the presence of cerium(IV) in the 24c next-nearest neighbor site of the iron(III) 24d site.

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“…). On the other hand, the synthetic garnet systems themselves are of great interest for both basic scientific research as well as various practical applications in magnetic, optical, and magneto‐optical devices, etc. due to the wide range of variations of their nearly perfect crystalline structure and related physical properties.…”

Section: Introductionmentioning

confidence: 99%

Dynamical X‐ray diffraction theory: Characterization of defects and strains in as‐grown and ion‐implanted garnet structures

Olikhovskii

Molodkin

Skakunova

et al. 2017

Physica Status Solidi (b)

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The generalized dynamical theory of X-ray diffraction by imperfect single crystals is extended to characterize structure imperfections of real single crystals with complex basis and similar crystalline films with inhomogeneous strain fields. The influence of various defects (intrinsic and extrinsic point defects, nanoclusters, and microdefects), simultaneously presented in such structures, on changing both average and fluctuating strain fields as well as structure factors are taken into account. The analytical expressions connecting immediately the coherent and diffuse components of the scattering intensity with statistical characteristics of these defects are obtained. Thus, the self-consistent description of the coherent and diffuse dynamical diffraction intensity components is provided. Some examples of the application of the developed theoretical model to treat rocking curves measured from various garnet structures by using high-resolution double-crystal X-ray diffractometer are reviewed. Possibilities for the quantitative characterization of structural defects and strain profiles in the as-grown and ion-implanted garnet single crystals and yttrium iron garnet films are demonstrated.The self-consistent dynamical description of coherent and diffuse scattering intensities from imperfect crystal structures with inhomogeneous strain fields and randomly distributed defects make it possible to determine the parameters of strain profiles and statistical characteristics of defects by analytical treating the coherent and diffuse components of rocking curves measured by the high-resolution double-crystal X-ray diffractometer with widely open detector window.

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Bi‐YIG system: The effect of cation relocation on structural, hyperfine, and magnetic properties

Cited by 11 publications

References 24 publications

Investigating the role of diamagnetic Cd²⁺ ions on the structural, optical, and magnetic properties of YIG

Investigating the role of diamagnetic Cd²⁺ ions on the structural, optical, and magnetic properties of YIG

Mössbauer Spectral Properties of Yttrium Iron Garnet, Y₃Fe₅O₁₂, and Its Isovalent and Nonisovalent Yttrium-Substituted Solid Solutions

Dynamical X‐ray diffraction theory: Characterization of defects and strains in as‐grown and ion‐implanted garnet structures

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Bi‐YIG system: The effect of cation relocation on structural, hyperfine, and magnetic properties

Cited by 11 publications

References 24 publications

Investigating the role of diamagnetic Cd2+ ions on the structural, optical, and magnetic properties of YIG

Investigating the role of diamagnetic Cd2+ ions on the structural, optical, and magnetic properties of YIG

Mössbauer Spectral Properties of Yttrium Iron Garnet, Y3Fe5O12, and Its Isovalent and Nonisovalent Yttrium-Substituted Solid Solutions

Dynamical X‐ray diffraction theory: Characterization of defects and strains in as‐grown and ion‐implanted garnet structures

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Product

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Investigating the role of diamagnetic Cd²⁺ ions on the structural, optical, and magnetic properties of YIG

Investigating the role of diamagnetic Cd²⁺ ions on the structural, optical, and magnetic properties of YIG

Mössbauer Spectral Properties of Yttrium Iron Garnet, Y₃Fe₅O₁₂, and Its Isovalent and Nonisovalent Yttrium-Substituted Solid Solutions