A reversible change of reflected light intensity between molten and solidified Ge-Sb-Te alloy

Masashi Kuwahara; Rie Endo; Toshio Fukaya; Takayuki Shima; Yasuhiko Iwanabe; Paul Fons; Junji Tominaga; Masahiro Susa

doi:10.1143/JJAP.46.L868

A reversible change of reflected light intensity between molten and solidified Ge-Sb-Te alloy

Masashi Kuwahara, Rie Endo, Toshio Fukaya, Takayuki Shima, Yasuhiko Iwanabe, Paul Fons, Junji Tominaga, Masahiro Susa

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

10 Citations (Scopus)

Abstract

The reflected light intensity (I_R) from the solid and liquid phases of Ge-Sb-Te alloy has been statically measured, I_R rapidly decreased after crossing the melting point during the heating process, and increased to its initial intensity level after solidifying during the cooling process. A special sample preparation technique using a quartz cell enabled reliable measurements to be carried out. The structure and composition of the Ge-Sb-Te alloy was investigated using Raman scattering and X-ray fluorescence after the melting process. Germanium was found to preferentially diffuse from the bulk to the surface leading to a germanium oxide surface phase.

Original language	English
Pages (from-to)	L868-L870
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	46
Issue number	36-40
DOIs	https://doi.org/10.1143/JJAP.46.L868
Publication status	Published - 2007 Oct 12
Externally published	Yes

Keywords

Ge-Sb-Te alloy
Melting point
Optical disk
Reflected light intensity
Static measurement

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.46.L868

Cite this

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title = "A reversible change of reflected light intensity between molten and solidified Ge-Sb-Te alloy",

abstract = "The reflected light intensity (IR) from the solid and liquid phases of Ge-Sb-Te alloy has been statically measured, IR rapidly decreased after crossing the melting point during the heating process, and increased to its initial intensity level after solidifying during the cooling process. A special sample preparation technique using a quartz cell enabled reliable measurements to be carried out. The structure and composition of the Ge-Sb-Te alloy was investigated using Raman scattering and X-ray fluorescence after the melting process. Germanium was found to preferentially diffuse from the bulk to the surface leading to a germanium oxide surface phase.",

keywords = "Ge-Sb-Te alloy, Melting point, Optical disk, Reflected light intensity, Static measurement",

author = "Masashi Kuwahara and Rie Endo and Toshio Fukaya and Takayuki Shima and Yasuhiko Iwanabe and Paul Fons and Junji Tominaga and Masahiro Susa",

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doi = "10.1143/JJAP.46.L868",

language = "English",

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T1 - A reversible change of reflected light intensity between molten and solidified Ge-Sb-Te alloy

AU - Kuwahara, Masashi

AU - Endo, Rie

AU - Fukaya, Toshio

AU - Shima, Takayuki

AU - Iwanabe, Yasuhiko

AU - Fons, Paul

AU - Tominaga, Junji

AU - Susa, Masahiro

PY - 2007/10/12

Y1 - 2007/10/12

N2 - The reflected light intensity (IR) from the solid and liquid phases of Ge-Sb-Te alloy has been statically measured, IR rapidly decreased after crossing the melting point during the heating process, and increased to its initial intensity level after solidifying during the cooling process. A special sample preparation technique using a quartz cell enabled reliable measurements to be carried out. The structure and composition of the Ge-Sb-Te alloy was investigated using Raman scattering and X-ray fluorescence after the melting process. Germanium was found to preferentially diffuse from the bulk to the surface leading to a germanium oxide surface phase.

AB - The reflected light intensity (IR) from the solid and liquid phases of Ge-Sb-Te alloy has been statically measured, IR rapidly decreased after crossing the melting point during the heating process, and increased to its initial intensity level after solidifying during the cooling process. A special sample preparation technique using a quartz cell enabled reliable measurements to be carried out. The structure and composition of the Ge-Sb-Te alloy was investigated using Raman scattering and X-ray fluorescence after the melting process. Germanium was found to preferentially diffuse from the bulk to the surface leading to a germanium oxide surface phase.

KW - Ge-Sb-Te alloy

KW - Melting point

KW - Optical disk

KW - Reflected light intensity

KW - Static measurement

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A reversible change of reflected light intensity between molten and solidified Ge-Sb-Te alloy

Abstract

Keywords

ASJC Scopus subject areas

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