Substituted polyscrystalline YIG with very-low ferrimagnetic resonance linewidth and optical transparency

Winkler, G.

doi:10.1109/tmag.1971.1067204

Cited by 25 publications

(2 citation statements)

References 9 publications

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“…However, the opt ical absorption coeffic ient for Ca-substituted polycrystalline garnets (Ca·ln·Ge-YlG) reported so far is higher than that for YlG single crystals. The values are about 10 cm -1 [4].…”

Section: Introductionmentioning

confidence: 90%

Ca-SUBSTITUTED POLYCRYSTALLINE GARNETS WITH VERY LOW OPTICAL ABSORPTION

1987

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Ca-substituted polycrystalline garnets with low optical absorption coefficient, below 2 cm-I, can be reproducibly prepared by reducing the cause of dispersion and absorption.The lowest optical absorption coefficient which has been measured so far is 0.5 cm-1 at the wavelength of 1.55 ~m. Reduction of porosity can be accomplished by simultaneous substitution of y3+ ions by Ca 2 +ions in combination with V S + ions for charge compensation and by sintering near the temperature at which the anomalous grain growth originates. Also, heat treatment at the temperature in the normal grain growth region reduces optical absorption of CaV-substituted polycrystalline garnets. It was found that the dispersion effect on optical absorption caused by grains is small in comparison with the dispersion caused by pores.

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Section: Introductionmentioning

confidence: 90%

Ca-SUBSTITUTED POLYCRYSTALLINE GARNETS WITH VERY LOW OPTICAL ABSORPTION

1987

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“…43 As per the SEM results, when x increases, the grain boundaries decrease per unit volume, reducing the contribution of the fast relaxation fraction to ΔH. 44 Finally, the appropriate amount of Zn 2+ -Sn 4+ doping can help homogenize the microstructure, contributing to the reduction in the FMR linewidth of Y 3 Zn x Sn x Fe 5−2x O 12 .…”

Section: Microwave Magnetic Lossmentioning

confidence: 99%

Dielectric and gyromagnetic structure modulations of Zn–Sn codoped yttrium–iron–garnet based on the density‐generalized functional theory and P–V–L bond theory

et al. 2023

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Herein, the crystal structure, dielectric properties, and gyromagnetic characteristics of Zn–Sn codoped Y3ZnxSnxFe5−2xO12 (x = 0.0–0.5) prepared using a conventional ceramic process were investigated. According to the first‐principles’ calculations and complex crystal bonding theory, Zn2+–Sn4+ codoping can increase the relative dielectric constant (εr) by enhancing the average ionicity. The x‐ray photoelectron spectroscopy (XPS) and Raman analysis results indicate that an appropriate amount of Zn2+–Sn4+ codoping can help improve the microscopic morphology, maintain the appropriate ratio of divalent iron ions, and reduce the microwave magnetic and electrical losses of YIG ferrites. The optimized microwave properties are as follows. Y3Zn0.3Sn0.3Fe4.4O12 after sintering at 1400°C; εr = 15.6; dielectric loss, that is, tanδε = 4.3 × 10−4; saturation magnetization, that is, 4πMS = 2244 G; ferromagnetic resonance linewidth, that is, ΔH = 37 Oe. These properties can help improve the performance of high‐frequency microwave components by enhancing the properties of ferrite.

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C. Special compositions

Hansen¹,

Enke²,

Winkler³

Landolt-Börnstein - Group III Condensed Matter

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Substituted polyscrystalline YIG with very-low ferrimagnetic resonance linewidth and optical transparency

Cited by 25 publications

References 9 publications

Ca-SUBSTITUTED POLYCRYSTALLINE GARNETS WITH VERY LOW OPTICAL ABSORPTION

Ca-SUBSTITUTED POLYCRYSTALLINE GARNETS WITH VERY LOW OPTICAL ABSORPTION

Dielectric and gyromagnetic structure modulations of Zn–Sn codoped yttrium–iron–garnet based on the density‐generalized functional theory and P–V–L bond theory

C. Special compositions

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