Rate-dependent phase transformations in nanoindented germanium
There is considerable controversy over the deformation behavior of germanium (Ge) under nanoindentation using a sharp diamond tip, with a diverse range of observations that suggest competing mechanisms. Here we show the deformation mechanism of Ge can be controlled by the rate of applied load. Loadi...
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| Veröffentlicht in: | Journal of applied physics 2009-06, Vol.105 (12), p.126101-126101-3 |
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| container_end_page | 126101-3 |
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| container_issue | 12 |
| container_start_page | 126101 |
| container_title | Journal of applied physics |
| container_volume | 105 |
| creator | Oliver, D. J. Bradby, J. E. Williams, J. S. Swain, M. V. Munroe, P. |
| description | There is considerable controversy over the deformation behavior of germanium (Ge) under nanoindentation using a sharp diamond tip, with a diverse range of observations that suggest competing mechanisms. Here we show the deformation mechanism of Ge can be controlled by the rate of applied load. Loading rate is varied over three orders of magnitude using depth-sensing nanoindentation. At slow loading rates, shear-induced plasticity is observed. At rapid loading rates
(
>
100
mN
s
−
1
)
, pressure-induced phase transformations are detected by
ex situ
micro-Raman spectroscopy and transmission electron microscopy. This switch in the deformation mechanism is due to the differing rate sensitivities of the respective deformation modes, shear-induced plasticity or pressure-induced phase transformation. |
| doi_str_mv | 10.1063/1.3151967 |
| format | Article |
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(
>
100
mN
s
−
1
)
, pressure-induced phase transformations are detected by
ex situ
micro-Raman spectroscopy and transmission electron microscopy. This switch in the deformation mechanism is due to the differing rate sensitivities of the respective deformation modes, shear-induced plasticity or pressure-induced phase transformation.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.3151967</identifier><identifier>CODEN: JAPIAU</identifier><language>eng</language><publisher>American Institute of Physics</publisher><ispartof>Journal of applied physics, 2009-06, Vol.105 (12), p.126101-126101-3</ispartof><rights>2009 American Institute of Physics</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c385t-f341b87d60ac4cd841f6a76d942ee6014c0d3ce152f7f7bd59c656265c50bfb63</citedby><cites>FETCH-LOGICAL-c385t-f341b87d60ac4cd841f6a76d942ee6014c0d3ce152f7f7bd59c656265c50bfb63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jap/article-lookup/doi/10.1063/1.3151967$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,1553,4498,27901,27902,76353,76359</link.rule.ids></links><search><creatorcontrib>Oliver, D. J.</creatorcontrib><creatorcontrib>Bradby, J. E.</creatorcontrib><creatorcontrib>Williams, J. S.</creatorcontrib><creatorcontrib>Swain, M. V.</creatorcontrib><creatorcontrib>Munroe, P.</creatorcontrib><title>Rate-dependent phase transformations in nanoindented germanium</title><title>Journal of applied physics</title><description>There is considerable controversy over the deformation behavior of germanium (Ge) under nanoindentation using a sharp diamond tip, with a diverse range of observations that suggest competing mechanisms. Here we show the deformation mechanism of Ge can be controlled by the rate of applied load. Loading rate is varied over three orders of magnitude using depth-sensing nanoindentation. At slow loading rates, shear-induced plasticity is observed. At rapid loading rates
(
>
100
mN
s
−
1
)
, pressure-induced phase transformations are detected by
ex situ
micro-Raman spectroscopy and transmission electron microscopy. This switch in the deformation mechanism is due to the differing rate sensitivities of the respective deformation modes, shear-induced plasticity or pressure-induced phase transformation.</description><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNp1z81KxDAUhuEgCtbRhXfQrYuO5zRN0mwGZNBRGBBE1yHNj0ZsWpq48O6d6QzuXJ3FefngIeQaYYnA6S0uKTKUXJyQAqGVlWAMTkkBUGPVSiHPyUVKnwCILZUFWb3o7CrrRheti7kcP3RyZZ50TH6Yep3DEFMZYhl1HMLcOFu-u90rhu_-kpx5_ZXc1fEuyNvD_ev6sdo-b57Wd9vK0JblytMGu1ZYDto0xrYNeq4Ft7KpneOAjQFLjUNWe-FFZ5k0nPGaM8Og8x2nC3Jz2DXTkNLkvBqn0OvpRyGoPVyhOsJ37erQJhPyDPg_3uvVn17NevoLwytg5A</recordid><startdate>20090615</startdate><enddate>20090615</enddate><creator>Oliver, D. J.</creator><creator>Bradby, J. E.</creator><creator>Williams, J. S.</creator><creator>Swain, M. V.</creator><creator>Munroe, P.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20090615</creationdate><title>Rate-dependent phase transformations in nanoindented germanium</title><author>Oliver, D. J. ; Bradby, J. E. ; Williams, J. S. ; Swain, M. V. ; Munroe, P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c385t-f341b87d60ac4cd841f6a76d942ee6014c0d3ce152f7f7bd59c656265c50bfb63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Oliver, D. J.</creatorcontrib><creatorcontrib>Bradby, J. E.</creatorcontrib><creatorcontrib>Williams, J. S.</creatorcontrib><creatorcontrib>Swain, M. V.</creatorcontrib><creatorcontrib>Munroe, P.</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Oliver, D. J.</au><au>Bradby, J. E.</au><au>Williams, J. S.</au><au>Swain, M. V.</au><au>Munroe, P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rate-dependent phase transformations in nanoindented germanium</atitle><jtitle>Journal of applied physics</jtitle><date>2009-06-15</date><risdate>2009</risdate><volume>105</volume><issue>12</issue><spage>126101</spage><epage>126101-3</epage><pages>126101-126101-3</pages><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>There is considerable controversy over the deformation behavior of germanium (Ge) under nanoindentation using a sharp diamond tip, with a diverse range of observations that suggest competing mechanisms. Here we show the deformation mechanism of Ge can be controlled by the rate of applied load. Loading rate is varied over three orders of magnitude using depth-sensing nanoindentation. At slow loading rates, shear-induced plasticity is observed. At rapid loading rates
(
>
100
mN
s
−
1
)
, pressure-induced phase transformations are detected by
ex situ
micro-Raman spectroscopy and transmission electron microscopy. This switch in the deformation mechanism is due to the differing rate sensitivities of the respective deformation modes, shear-induced plasticity or pressure-induced phase transformation.</abstract><pub>American Institute of Physics</pub><doi>10.1063/1.3151967</doi><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of applied physics, 2009-06, Vol.105 (12), p.126101-126101-3 |
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| language | eng |
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| source | American Institute of Physics (AIP) Journals; AIP Digital Archive; Alma/SFX Local Collection |
| title | Rate-dependent phase transformations in nanoindented germanium |
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