High-Throughput Screening of Ultraviolet--Visible Magnetooptical Properties of Spinel Ferrite (Zn,Co)Fe2O4 Solid Solution Epitaxial Film by a Composition-Spread Approach

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概要

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• Spinel ferrite Zn1-xCoxFe2O4 ($0\leq x\leq 1$) (111) composition-spread thin film was epitaxially grown on an MgAl2O4(111) substrate by combinatorial pulsed laser deposition. Sequential deposition of the two end-compounds with monolayer-period led to the formation of solid solution with addressable composition. Point-by-point ultraviolet--visible magnetic circular dichroism and Faraday rotation angle spectra showed a significant variation with $x$, and the latter spectra combined with absorption spectra led to the rapid evaluation of magnetooptical performance factor as functions of $x$ and photon energy. A significant enhancement of ultraviolet magnetooptical effect was observed by substituting a small amount of Zn (${\leq}30$ at. %) for Co in CoFe2O4.

• 2010-10-25

著者

• Kimura Hisamichi

  Institute For Material Research Tohoku University

• Ohkubo Akira

  Institute For Materials Research Tohoku University

• Ueno Kazunori

  Wpi Advanced Institute For Materials Research Tohoku University

• Hirose Yasushi

  Department Of Advanced Materials Science Graduate School Of Frontier Sciences The University Of Toky

• Kawasaki Masashi

  Institute For Chemical Research Kyoto University

• Iwasaki Yosuke

  Jfe Mineral Co. Ltd.

• Makino Takayuki

  Wpi Advanced Institute For Materials Research Tohoku University

• Hasegawa Tetsuya

  Department Of Applied Chemistry Himeji Institute Of Technology

• FUKUMURA Tomoteru

  Institute for Materials Research

• Hasegawa Tetsuya

  Department of Chemistry, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan

• Ueno Kazunori

  WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

• Makino Takayuki

  WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

• Iwasaki Yosuke

  JFE MINERAL Co., Ltd., Chiba 260-0826, Japan

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