Optically Transparent Ferromagnetic Nanogranular Films with Tunable Transmittance.

Abstract:

:Developing optically transparent magnets at room temperature is an important challenge. They would bring many innovations to various industries, not only for electronic and magnetic devices but also for optical applications. Here we introduce FeCo-(Al-fluoride) nanogranular films exhibiting ferromagnetic properties with high optical transparency in the visible light region. These films have a nanocomposite structure, in which nanometer-sized FeCo ferromagnetic granules are dispersed in an Al-fluoride crystallized matrix. The optical transmittance of these films is controlled by changing the magnetization. This is a new type of magneto-optical effect and is explained by spin-dependent charge oscillation between ferromagnetic granules due to quantum-mechanical tunneling.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Kobayashi N,Masumoto H,Takahashi S,Maekawa S

doi

10.1038/srep34227

subject

Has Abstract

pub_date

2016-09-28 00:00:00

pages

34227

issn

2045-2322

pii

srep34227

journal_volume

6

pub_type

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