Mechanical strength of GeSi alloy

Ichiro Yonenaga; Koji Sumino

doi:10.1063/1.363266

Mechanical strength of GeSi alloy

Ichiro Yonenaga, Koji Sumino

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

27 Citations (Scopus)

Abstract

The characteristic mechanical behavior of bulk Ge_1-xSi_x alloys with compositions x = 0-0.4 grown by the Czochralski technique is investigated as a function of the composition and temperature by means of compressive deformation and is compared with that of elemental Ge and Si semiconductors. Both the yield stress and the flow stress at any strain increase with increasing Si content in the composition range investigated. The yield stress of the GeSi alloy is temperature insensitive at high temperatures, showing that the flow stress of an alloy semiconductor has an athermal component that is absent in elemental or compound semiconductors. The hardening mechanism in alloy semiconductors is discussed.

Original language	English
Pages (from-to)	3244-3247
Number of pages	4
Journal	Journal of Applied Physics
Volume	80
Issue number	6
DOIs	https://doi.org/10.1063/1.363266
Publication status	Published - 1996 Sept 15
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.363266

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AB - The characteristic mechanical behavior of bulk Ge1-xSix alloys with compositions x = 0-0.4 grown by the Czochralski technique is investigated as a function of the composition and temperature by means of compressive deformation and is compared with that of elemental Ge and Si semiconductors. Both the yield stress and the flow stress at any strain increase with increasing Si content in the composition range investigated. The yield stress of the GeSi alloy is temperature insensitive at high temperatures, showing that the flow stress of an alloy semiconductor has an athermal component that is absent in elemental or compound semiconductors. The hardening mechanism in alloy semiconductors is discussed.

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Mechanical strength of GeSi alloy

Abstract

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