Nanoindentation of HgCdTe prepared by molecular beam epitaxy

Mariusz Martyniuk, Richard Sewell, Charles Musca, John Dell, Lorenzo Faraone

Research output: Contribution to journalArticle

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Abstract

Nanoindentation has been used to investigate the elastoplastic behavior of Hg0.7Cd0.3Te prepared by molecular beam epitaxy. It was found that Hg0.7Cd0.3Te had a modulus of elasticity of similar to 50 GPa and hardness of similar to 0.66 GPa. The HgCdTe response to nanoindentation was found to be purely elastic for low loads and developed into similar to 10% elastic and similar to 90% plastic response for higher-load indentation exhibiting significant amounts of creep. The onset of plasticity has been observed to be marked by discontinuities or "pop-in" events in the indenter load-penetration curves at sheer stresses of similar to 1.8 GPa, and has been correlated with the homogeneous nucleation and propagation of dislocations. (c) 2005 American Institute of Physics.
Original languageEnglish
Pages (from-to)251905-1 to 251905-3
JournalApplied Physics Letters
Volume87
Issue number25
DOIs
Publication statusPublished - 2005

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nanoindentation
molecular beam epitaxy
indentation
plastic properties
modulus of elasticity
discontinuity
hardness
plastics
penetration
nucleation
physics
propagation
curves

Cite this

Martyniuk, Mariusz ; Sewell, Richard ; Musca, Charles ; Dell, John ; Faraone, Lorenzo. / Nanoindentation of HgCdTe prepared by molecular beam epitaxy. In: Applied Physics Letters. 2005 ; Vol. 87, No. 25. pp. 251905-1 to 251905-3.
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Nanoindentation of HgCdTe prepared by molecular beam epitaxy. / Martyniuk, Mariusz; Sewell, Richard; Musca, Charles; Dell, John; Faraone, Lorenzo.

In: Applied Physics Letters, Vol. 87, No. 25, 2005, p. 251905-1 to 251905-3.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nanoindentation of HgCdTe prepared by molecular beam epitaxy

AU - Martyniuk, Mariusz

AU - Sewell, Richard

AU - Musca, Charles

AU - Dell, John

AU - Faraone, Lorenzo

PY - 2005

Y1 - 2005

N2 - Nanoindentation has been used to investigate the elastoplastic behavior of Hg0.7Cd0.3Te prepared by molecular beam epitaxy. It was found that Hg0.7Cd0.3Te had a modulus of elasticity of similar to 50 GPa and hardness of similar to 0.66 GPa. The HgCdTe response to nanoindentation was found to be purely elastic for low loads and developed into similar to 10% elastic and similar to 90% plastic response for higher-load indentation exhibiting significant amounts of creep. The onset of plasticity has been observed to be marked by discontinuities or "pop-in" events in the indenter load-penetration curves at sheer stresses of similar to 1.8 GPa, and has been correlated with the homogeneous nucleation and propagation of dislocations. (c) 2005 American Institute of Physics.

AB - Nanoindentation has been used to investigate the elastoplastic behavior of Hg0.7Cd0.3Te prepared by molecular beam epitaxy. It was found that Hg0.7Cd0.3Te had a modulus of elasticity of similar to 50 GPa and hardness of similar to 0.66 GPa. The HgCdTe response to nanoindentation was found to be purely elastic for low loads and developed into similar to 10% elastic and similar to 90% plastic response for higher-load indentation exhibiting significant amounts of creep. The onset of plasticity has been observed to be marked by discontinuities or "pop-in" events in the indenter load-penetration curves at sheer stresses of similar to 1.8 GPa, and has been correlated with the homogeneous nucleation and propagation of dislocations. (c) 2005 American Institute of Physics.

U2 - 10.1063/1.2143411

DO - 10.1063/1.2143411

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SP - 251905-1 to 251905-3

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

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