Magnetic and magneto-optic properties of lead- and bismuth-substituted yttrium iron garnet films

Hansen, P.; Witter, K.; Tolksdorf, W.

doi:10.1103/physrevb.27.6608

Cited by 273 publications

(88 citation statements)

References 40 publications

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“…Gallium also can be replaced by aluminum. The temperature dependence of dysprosium based garnets can be calculated fr()m the molecular field theory using the molecular field coefficients for DY3Fe5012 [33] and accounting for their change by bismuth additions [34]. The result is presented in Fig.2 demonstrating the influence of Ga 3 + and Bi3+ on Ms, Tc and Tcomp' The high-temperature magnetization and Tc can be reduced by tetrahedral substitutions [35,36] where e.g.…”

Section: Magnetization Curie Temperature and Compensation Temperaturementioning

confidence: 99%

“…!.Tcly == 140K while Bi 3 + leads to an increase of Tc by ! !.Tc/x == 35K [34,37]. Also, Tcomp can be varied in a wide temperature range by tetranedral sustitutions at constant Bi3+ content.…”

Section: Magnetization Curie Temperature and Compensation Temperaturementioning

confidence: 99%

“…The magni~de .of As for (Dy,Bi)3Fe5_yGay012 garn~ts is shown m Flg.3. These data were obtamed from lmear extrapolation of single crystalline data [34,44,45] and demonstrate the strong reduction of As with increasing Ga 3 + content due to the strong decrease of Tc-The circles refer to experimental data measured on polycrystalline films prepared by pyrolysis [46]. Thus, A..:, is expected to range between -3*10-6 and -5*10-6' for y around 1.…”

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confidence: 99%

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Garnets and Ferrites for Magneto-Optical Recording

1991

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-The present contribution reviews the current status of ferrirnagnetic oxides for magneto-optical recording where special attention is paid to iron garnet fi1.ms deposited by pyrolysis and sputtering. The magnetic and magneto-optical properties are discussed. The influence of the preparation conditions and the annealing treatments controlling microstructure, grain size and homogeneity of the films are analyzed with respect to their relevance to structure-sensitive quantities such as coercivity, noise and other recording parameters determining the performance of magneto-optical disks.

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Section: Magnetization Curie Temperature and Compensation Temperaturementioning

confidence: 99%

Section: Magnetization Curie Temperature and Compensation Temperaturementioning

confidence: 99%

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confidence: 99%

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Garnets and Ferrites for Magneto-Optical Recording

1991

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“…However, the peaks in the Kerr rotation spectra at 530 nm were smaller than the Faraday rotation angles at the same wavelength, which was attributed to optical losses. The figure of merit of a magneto-optical material is usually defined as 19…”

Section: Figures Of Merit For the Mo Imaging Platesmentioning

confidence: 99%

Development of MO imaging plate for MO color imaging

et al. 2017

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We propose a magneto-optical (MO) color imaging technique that enables magnetic field distributions to be quantitatively observed in real-time. Values of magnetic fields are displayed as colors. MO imaging plates have been developed using highly bismuth-substituted neodymium iron garnet films, for use in MO color imaging. The films were prepared by the metal-organic decomposition method. The MO imaging plates were characterized using the MO figure of merit for MO imaging plates, which is defined in this study. The magnetic fields were expressed by colors, using light-emitting diodes (LEDs) as light sources. The colors varied from blue to yellow, from green to yellow, and from blue to red, for sources corresponding to a white LED, combined green and yellow LEDs, and combined blue and yellow LEDs, respectively. The MO color imaging of spherical magnets is demonstrated.Key words: magneto-optical imaging, bismuth substituted neodymium iron garnet, magneto-optical effect, metal organic decomposition, magneto-optical imaging plate, magneto-optical figure of merit

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“…It is well known that bismuth-substituted ferrite garnets (Bi:FGs) have a giant magnetooptical response [1][2][3][4][5][6][7][8][9]. For this reason, they have found widespread use as optical switchers, optical isolators and magnetic field sensors.…”

Section: Introductionmentioning

confidence: 99%

Faraday rotation and sensitivity of (100) bismuth-substituted ferrite garnet films

et al. 2002

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We have investigated the Faraday rotation of in-plane magnetized bismuthsubstituted ferrite garnet films grown by liquid phase epitaxy on (100) oriented gadolinium gallium garnet substrates. The Faraday spectra were measured for photon energies between 1.7 -2.6 eV. To interprete the spectra, we use a model based on two electric dipole transitions, one tetrahedral and one octahedral. Furthermore, the Faraday rotation sensitivity was measured at 2.3 eV, and found to be in good agreement with the theoretical predicitions. In particular, we find that the sensitivity increases linearly with the bismuth content and nonlinearly with the gallium content.

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Magnetic and magneto-optic properties of lead- and bismuth-substituted yttrium iron garnet films

Cited by 273 publications

References 40 publications

Garnets and Ferrites for Magneto-Optical Recording

Garnets and Ferrites for Magneto-Optical Recording

Development of MO imaging plate for MO color imaging

Faraday rotation and sensitivity of (100) bismuth-substituted ferrite garnet films

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