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Oka, Hideo; Iwata, Junzo

doi:10.3379/jmsjmag.5.161

Cited by 6 publications

(5 citation statements)

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“…The large Faraday effect of EuSe nanoparticles might be attributed to their characteristic spin structure . According to the spin structure of EuSe, it has been shown that bulk EuSe shows a ferrimagnetic phase (NNS) at a low temperature (1.8 < T < 4.6 K, T c = 4.6 K) .…”

Section: Resultsmentioning

confidence: 99%

Remarkable Magneto-Optical Properties of Europium Selenide Nanoparticles with Wide Energy Gaps

et al. 2008

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The enhanced magneto-optical properties of nanoscaled lanthanide chalogenide semiconductors which have a wide energy gap were observed at around 500 nm for the first time. The nanoscaled semiconductors, Eu(1-x)Se nanoparticles 1 (cubic shapes) and 2 (spherical shapes), were synthesized by the thermal reduction of Eu(III) ion with organic ligands containing Se atoms. The resulting Eu(1-x)Se nanoparticles were characterized by X-ray diffraction, high-resolution transmission electron microscopy, energy dispersive X-ray spectroscopy, superconducting quantum interference devices magnetometer, and microwave induced plasma atomic emission spectroscopy measurements. The particle grain sizes of 1 and 2 were estimated to be 11 and 20 nm, respectively. The concentration-normalized Veldet constants (the magnitude of the Faraday effect) of Eu(1-x)Se nanoparticles were much larger than those of corresponding bulk EuSe and EuS nanoparticles.

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Section: Resultsmentioning

confidence: 99%

Remarkable Magneto-Optical Properties of Europium Selenide Nanoparticles with Wide Energy Gaps

et al. 2008

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“…Because the quantum confinement effect in a microcrystalline semiconductor leads to an increase of oscillator strength, the enhancement of Faraday effect may be caused by the increased oscillator strength of microcrystals in such a composite material. 23 In addition, the dielectric constant of matrix in the composite inevitably has influence on the Faraday rotation angle obtained for the composite material. 24 Several studies have been done concerning the magneto-optical properties of composite thin films in which microcrystalline semimagnetic semiconductors as well as metals are embedded.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Faraday effect of EuS microcrystal-embedded oxide thin films

Tanaka

Tatehata

Fujita

et al. 2001

Journal of Applied Physics

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EuS microcrystal-embedded SiO 2 , Al 2 O 3 , and TiO 2 thin films have been prepared by using rf sputtering method. X-ray diffraction analysis indicates that EuS microcrystal is precipitated as a single phase in Al 2 O 3 and TiO 2 films while precipitation of EuS is not detected in SiO 2 film. Faraday effect attributable to the 4 f 7-4 f 6 5d transition of Eu 2ϩ in EuS microcrystalline phase is observed in Al 2 O 3 and TiO 2 films. In particular, Faraday rotation angle observed for EuS-embedded TiO 2 film is large; for instance, the magnitude of Verdet constant for as-deposited TiO 2 film prepared without heating of substrate during the sputtering is 0.15 deg/cm Oe at wavelength of 700 nm. This value is larger by two orders of magnitude than those of Eu 2ϩ-or Tb 3ϩ-containing oxide glasses which show the largest Faraday rotation angle among rare-earth-containing glasses, and is comparable to the value for EuSe single crystal.

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“…Besides that, for clinical use, they should be covered with some biocompatible material, which helps in its colloidal stability without harming its magnetic properties. For this, polymeric coatings, such as poly-3hydroxybutyrate [18] and polylactic acid, [19] have been used. Other polymers, like poly (butylene succinate), can also be exploited for this application.…”

Section: Introductionmentioning

confidence: 99%

Hyperthermia System Based on Extrinsically Magnetic Poly (Butylene Succinate)

Moraes

Sáez

Hernández³

et al. 2018

Macromolecular Symposia

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In this work, an extrinsically magnetic composite based on modified magnetite and poly (butylene succinate) (PBS) is prepared. The magnetic composite is obtained by the emulsion–solvent evaporation method. Several analytical tests confirm the synthesis of the composites. Among them, Nuclear magnetic resonance (NMR) results in comparison with literature confirms the synthesis of PBS. X‐Ray Diffraction (XRD) shows the characteristic peaks of PBS, in its monoclinic structure. The crystallite size (Lc) of magnetic particles inside the composite, is equal to 13 nm. Thermogravimetric analysis (TGA) reveals the presence of 5.3 wt% magnetite in the composite and demonstrates that the inclusion of magnetite does not affect the thermal stability of the polymer. The analysis of Fourier transform infrared attenuated total reflection spectra (FTIR‐ATR) indicates the synthesis of desired products as well as the encapsulation of magnetite in PBS polymer matrix. The composite presents magnetic force, which allows its magnetic guidance to a target area. Besides, the magnetic induction heating test promotes heating within the therapeutic range from 40 to 45 °C, being able, according to literature, to promote the death of several types of cancer's cells. Therefore, the material here presented possesses potential to be deeply researched as a future cancer treatment tool.

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Cited by 6 publications

References 0 publications

Remarkable Magneto-Optical Properties of Europium Selenide Nanoparticles with Wide Energy Gaps

Remarkable Magneto-Optical Properties of Europium Selenide Nanoparticles with Wide Energy Gaps

Preparation and Faraday effect of EuS microcrystal-embedded oxide thin films

Hyperthermia System Based on Extrinsically Magnetic Poly (Butylene Succinate)

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