Garnets with high magnetooptic figures of merit in the visible region

Lacklison, D. E.; Scott, G. B.; Ralph, H. I.; Page, J. L.

doi:10.1109/tmag.1973.1067670

Cited by 72 publications

(24 citation statements)

References 7 publications

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“…For instance, the Verdet constants of most NP/BCP composites at 845 nm were 10 times larger than those of composites made by sol-gel methods, which provided a maximum V ~4000-5000 °/T-m near 680-780 nm [37,44]. The maxima of FOM value of the 9.3 nm composite was as high as ~-27 °/T at 845 nm, 1.5 times higher than that of BiYIG single crystal at 760 nm [29].…”

Section: Verdet Constant Measurement Of Np/bcp Compositesmentioning

confidence: 87%

“…This value is comparable with that of BiYIG, with a measured Verdet constant of ~2-3 × 10 4 °/T⋅m at 700-800 nm. 29 The composite FR response also surpassed TGG, which has V was around ~8 × 10 3 °/T⋅m at 632 nm. 37 The Verdet constant of neat polymer film was measured as + 12 °/T⋅m at 980nm, thus the strong MO response of the NP/BCP composite is introduced by the addition of FePt NPs.…”

Section: Verdet Constant Measurement Of Np/bcp Compositesmentioning

confidence: 94%

“…Acceptable MO performance in a composite generally requires the dispersion of a large volume fraction of MO nanoparticles, which often leads to light losses through scattering, thereby decreasing transparency and useful FR response [22,23]. Today's benchmark MO materials include ferromagnetic terbium gallium garnet (TGG, Tb 3 Ga 5 O 12 ) [24][25][26][27][28] and bismuth (Bi) doped yttrium iron garnet (Bi:YIG, Y 2 Fe 5 O 12 ) [29][30][31][32][33], targeting visible and near infrared (NIR) regimes, respectively. However, this family of materials containing rare-earth elements is usually produced as single crystals in order to achieve millimeter-scale path lengths for excellent MO performance [27,29,31].…”

Section: Introductionmentioning

confidence: 99%

“…Today's benchmark MO materials include ferromagnetic terbium gallium garnet (TGG, Tb 3 Ga 5 O 12 ) [24][25][26][27][28] and bismuth (Bi) doped yttrium iron garnet (Bi:YIG, Y 2 Fe 5 O 12 ) [29][30][31][32][33], targeting visible and near infrared (NIR) regimes, respectively. However, this family of materials containing rare-earth elements is usually produced as single crystals in order to achieve millimeter-scale path lengths for excellent MO performance [27,29,31]. The high processing costs associated with high-quality crystal growth and limited achievable film thickness have restricted their broader utilization [26,32,33].…”

Section: Introductionmentioning

confidence: 99%

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Improving Faraday rotation performance with block copolymer and FePt nanoparticle magneto-optical composite

Miles¹,

Gai²,

Gangopadhyay³

et al. 2017

Opt. Mater. Express

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Magneto-optical (MO) composites with excellent Faraday rotation (FR) response were fabricated using iron platinum (FePt) nanoparticles (NPs) and polystyrene-block-poly (2-vinyl pyridine) (PS-b-P2VP) block copolymers (BCPs). Gallic acid functionalized FePt NPs with average core diameters (dcore) of 1.9, 4.9, 5.7 and 9.3 nm have been selectively incorporated into a P2VP domain through hydrogen bonding interactions. The use of copolymer templates to selectively arrange the magnetic NPs guaranteed high MO performance with little trade-off in terms of scattering loss, providing a simple strategy to prepare functional materials for MO applications. As a result, Verdet constants of a 10 wt % loaded 4.9 nm FePt NP composite reached absolute magnitudes as high as ~-6 × 10 4 °/T-m at 845 nm, as determined by FR measurements at room temperature. At the same time, the MO figure-of-merit was as large as −25 °/T in these composites, indicating both excellent MO performance and transparency. The dependence of the nanocomposite FR properties on particle diameter, loading (from 0.1 wt % to 10 wt %) and composite nanostructure were systematically investigated at four infrared wavelengths (845, 980, 1310 and 1550 nm Herranz, "Magnetophotonic response of three-dimensional opals," ACS Nano 5(4), 2957-2963 (2011). 12. J. C. Suits, "Faraday and Kerr effects in magnetic compounds," IEEE Trans. Magn. 8(1), 95-105 (1972 219-223 (1992) 3771-3774 (2015). 67. D. P. Song, C. Li, N. S. Colella, W. Xie, S. Li, X. Lu, S. Gido, J. H. Lee, and J. J. Watkins, "Large-volume selforganization of polymer/nanoparticle hybrids with millimeter-scale grain sizes using brush block copolymers," J.

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Section: Verdet Constant Measurement Of Np/bcp Compositesmentioning

confidence: 87%

Section: Verdet Constant Measurement Of Np/bcp Compositesmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving Faraday rotation performance with block copolymer and FePt nanoparticle magneto-optical composite

Miles¹,

Gai²,

Gangopadhyay³

et al. 2017

Opt. Mater. Express

View full text Add to dashboard Cite

show abstract

“…[ 3 ] Most current applications rely on MO crystals to provide large Verdet constants at acceptable levels of optical attenuation. [ 4 ] Today's benchmark material is yttriumiron-garnet (Y 3 Fe 5 O 12 ) (YIG). [5][6][7] It has high optical transparency throughout the visible and IR regions, provides a relatively large Verdet constant and can be processed using planar-etching and implantation techniques.…”

Section: Introductionmentioning

confidence: 99%

Complex Faraday Rotation in Microstructured Magneto‐optical Fiber Waveguides

et al. 2011

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Magneto-optical glasses are of considerable current interest, primarily for applications in fiber circuitry, optical isolation, all-optical diodes, optical switching and modulation. While the benchmark materials are still crystalline, glasses offer a variety of unique advantages, such as very high rare-earth and heavy-metal solubility and, in principle, the possibility of being produced in fiber form. In comparison to conventional fiber-drawing processes, pressure-assisted melt-filling of microcapillaries or photonic crystal fibers with magneto-optical glasses offers an alternative route to creating complex waveguide architectures from unusual combinations of glasses. For instance, strongly diamagnetic tellurite or chalcogenide glasses with high refractive index can be combined with silica in an all-solid, microstructured waveguide. This promises the implementation of as-yet-unsuitable but strongly active glass candidates as fiber waveguides, for example in photonic crystal fibers.

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Magneto‐Optical Properties of Metals, Alloys and Compounds

Schoenes

2006

Materials Science and Technology

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Garnets with high magnetooptic figures of merit in the visible region

Cited by 72 publications

References 7 publications

Improving Faraday rotation performance with block copolymer and FePt nanoparticle magneto-optical composite

Improving Faraday rotation performance with block copolymer and FePt nanoparticle magneto-optical composite

Complex Faraday Rotation in Microstructured Magneto‐optical Fiber Waveguides

Magneto‐Optical Properties of Metals, Alloys and Compounds

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