Giant Faraday Rotation through Ultrasmall Fe⁰_n Clusters in Superparamagnetic FeO-SiO₂ Vitreous Films.

ABSTRACT: Magnetooptical (MO) glasses and, in particular, Faraday rotators are becoming key components in lasers and optical information processing, light switching, coding, filtering, and sensing. The common design of such Faraday rotator materials follows a simple path: high Faraday rotation is achieved by maximizing the concentration of paramagnetic ion species in a given matrix material. However, this approach has reached its limits in terms of MO performance; hence, glass-based materials can presently not be used efficiently in thin film MO applications. Here, a novel strategy which overcomes this limitation is demonstrated. Using vitreous films of xFeO·(100 - x)SiO₂, unusually large Faraday rotation has been obtained, beating the performance of any other glassy materia

SUBMITTER: Nakatsuka Y 

PROVIDER: S-EPMC5396158 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature