Document Detail


Implementation of micro-ball nanodiamond anvils for high-pressure studies above 6 Mbar.
MedLine Citation:
PMID:  23093199     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Since invention of the diamond anvil cell technique in the late 1950s for studying materials at extreme conditions, the maximum static pressure generated so far at room temperature was reported to be about 400 GPa. Here we show that use of micro-semi-balls made of nanodiamond as second-stage anvils in conventional diamond anvil cells drastically extends the achievable pressure range in static compression experiments to above 600 GPa. Micro-anvils (10-50 μm in diameter) of superhard nanodiamond (with a grain size below ∼50 nm) were synthesized in a large volume press using a newly developed technique. In our pilot experiments on rhenium and gold we have studied the equation of state of rhenium at pressures up to 640 GPa and demonstrated the feasibility and crucial necessity of the in situ ultra high-pressure measurements for accurate determination of material properties at extreme conditions.
Authors:
Leonid Dubrovinsky; Natalia Dubrovinskaia; Vitali B Prakapenka; Artem M Abakumov
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Nature communications     Volume:  3     ISSN:  2041-1723     ISO Abbreviation:  Nat Commun     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101528555     Medline TA:  Nat Commun     Country:  England    
Other Details:
Languages:  eng     Pagination:  1163     Citation Subset:  IM    
Affiliation:
1] Bayerisches Geoinstitut, Universität Bayreuth, 95440 Bayreuth, Germany [2].
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