Nanoindentation of HgCdTe prepared by molecular beam epitaxy

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

doi:10.1063/1.2143411

Nanoindentation of HgCdTe prepared by molecular beam epitaxy

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

Graduate Research School

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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 language	English
Pages (from-to)	251905-1 to 251905-3
Journal	Applied Physics Letters
Volume	87
Issue number	25
DOIs	https://doi.org/10.1063/1.2143411
Publication status	Published - 2005

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title = "Nanoindentation of HgCdTe prepared by molecular beam epitaxy",

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.",

author = "Mariusz Martyniuk and Richard Sewell and Charles Musca and John Dell and Lorenzo Faraone",

year = "2005",

doi = "10.1063/1.2143411",

language = "English",

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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

M3 - Article

VL - 87

SP - 251905-1 to 251905-3

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 25

ER -