Magnetic glass-film based on single-nanosize 𝜺 -Fe2O3 nanoparticles | Zendy

Marie Yoshikiyo | Zendy; Asuka Namai | Zendy; Kosuke Nakagawa | Zendy; Shinichi Ohkoshi | Zendy

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Magnetic glass-film based on single-nanosize 𝜺 -Fe2O3 nanoparticles

Author(s) -

Marie Yoshikiyo,

Asuka Namai,

Kosuke Nakagawa,

Shinichi Ohkoshi

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4974976

Subject(s) - materials science , coercivity , thin film , nanoparticle , absorbance , magnetic hysteresis , ferroelectricity , ferromagnetism , quartz , hysteresis , hydroxide , tetramethylammonium hydroxide , fused quartz , analytical chemistry (journal) , magnetization , composite material , chemical engineering , nanotechnology , magnetic field , optics , optoelectronics , dielectric , condensed matter physics , chemistry , physics , engineering , quantum mechanics , chromatography

We report a magnetic thin film of single-nanosize ε-Fe2O3 in SiO2 matrix. The glass-film was prepared by sintering a silica coated iron oxide hydroxide on a quartz substrate in air. The glass-film consists of ε-Fe2O3 of 8.8 nm size, and its thickness was 570 nm (0.57 μm) with a roughness of 10 nm (0.01 μm). UV-vis spectrum showed that the glass-film has small absorbance of 0.043 at 500 nm. The magneto-optical effect was investigated, and Faraday ellipticity showed a magnetic hysteresis loop with a coercive field of 3.0 ± 0.2 kOe. Furthermore, single-nanosize ε-Fe2O3 without silica was prepared as a reference sample, and ferroelectricity was observed. Therefore, the present thin glass-film consists of single-nanosize ferroelectric-ferromagnetic nanoparticles

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