Optical properties of nanocrystalline FeSi 2 and the effects of hydrogenation

K. Takarabe; H. Doi; Y. Mori; K. Fukui; Y. Shim; N. Yamamoto; T. Yoshitake; K. Nagayama

doi:10.1063/1.2172711

Optical properties of nanocrystalline FeSi ₂ and the effects of hydrogenation

K. Takarabe, H. Doi, Y. Mori, K. Fukui, Y. Shim, N. Yamamoto, T. Yoshitake, K. Nagayama

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

Various optical measurements confirm that optical absorption in uniform thin films made from nanocrystalline iron disilicide (nc- Fe Si2) with a 3-5 nm radius is larger by about 10% than that of single crystalline Β-Fe Si2. It is also found that the hydrogenation of nc- Fe Si2 changes strongly its optical characteristic energies. The nanocrystalline state appears characteristically in the imaginary part of dielectric constants of Β-Fe Si2 around 2-3 eV.

Original language	English
Article number	061911
Journal	Applied Physics Letters
Volume	88
Issue number	6
DOIs	https://doi.org/10.1063/1.2172711
Publication status	Published - Feb 2006

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2172711

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title = "Optical properties of nanocrystalline FeSi 2 and the effects of hydrogenation",

abstract = "Various optical measurements confirm that optical absorption in uniform thin films made from nanocrystalline iron disilicide (nc- Fe Si2) with a 3-5 nm radius is larger by about 10% than that of single crystalline Β-Fe Si2. It is also found that the hydrogenation of nc- Fe Si2 changes strongly its optical characteristic energies. The nanocrystalline state appears characteristically in the imaginary part of dielectric constants of Β-Fe Si2 around 2-3 eV.",

author = "K. Takarabe and H. Doi and Y. Mori and K. Fukui and Y. Shim and N. Yamamoto and T. Yoshitake and K. Nagayama",

note = "Funding Information: This work was supported by the Joint Studies Program (2004—2005) of the Institute for Molecular Science and also by the Special Grant for Cooperative Research administered by Japan Private School Promotion Foundation and the Ministry of Education, Science, and Culture through a Grant-in-Aid for Scientific Research (145508). The authors also thank Dr. Prins for a critical reading of this manuscript.",

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T1 - Optical properties of nanocrystalline FeSi 2 and the effects of hydrogenation

AU - Takarabe, K.

AU - Doi, H.

AU - Mori, Y.

AU - Fukui, K.

AU - Shim, Y.

AU - Yamamoto, N.

AU - Yoshitake, T.

AU - Nagayama, K.

N1 - Funding Information: This work was supported by the Joint Studies Program (2004—2005) of the Institute for Molecular Science and also by the Special Grant for Cooperative Research administered by Japan Private School Promotion Foundation and the Ministry of Education, Science, and Culture through a Grant-in-Aid for Scientific Research (145508). The authors also thank Dr. Prins for a critical reading of this manuscript.

PY - 2006/2

Y1 - 2006/2

N2 - Various optical measurements confirm that optical absorption in uniform thin films made from nanocrystalline iron disilicide (nc- Fe Si2) with a 3-5 nm radius is larger by about 10% than that of single crystalline Β-Fe Si2. It is also found that the hydrogenation of nc- Fe Si2 changes strongly its optical characteristic energies. The nanocrystalline state appears characteristically in the imaginary part of dielectric constants of Β-Fe Si2 around 2-3 eV.

AB - Various optical measurements confirm that optical absorption in uniform thin films made from nanocrystalline iron disilicide (nc- Fe Si2) with a 3-5 nm radius is larger by about 10% than that of single crystalline Β-Fe Si2. It is also found that the hydrogenation of nc- Fe Si2 changes strongly its optical characteristic energies. The nanocrystalline state appears characteristically in the imaginary part of dielectric constants of Β-Fe Si2 around 2-3 eV.

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Optical properties of nanocrystalline FeSi ₂ and the effects of hydrogenation

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