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High-pressure Brillouin scattering of amorphous BeH2.
MedLine Citation:
PMID:  16409036     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
High-pressure micro-Brillouin scattering is employed to investigate the pressure dependence of the sound velocity, refractive index, equation of state, and mechanical properties of amorphous BeH2. The refractive index n has been determined by using two scattering geometries (70 degrees and 180 degrees). The equation of state is deduced from the pressure dependences of the sound velocity. The bulk modulus is 14.2 (+/-3.0) GPa and its pressure derivative is 5.3 (+/-0.5). The polarizability is calculated from the refractive index and the density of the material. It increases with pressure while Poisson's ratio decreases with pressure.
Authors:
Muhtar Ahart; Jeffery L Yarger; Kristina M Lantzky; Satoshi Nakano; Ho-Kwang Mao; Russell J Hemley
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of chemical physics     Volume:  124     ISSN:  0021-9606     ISO Abbreviation:  J Chem Phys     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2006-01-13     Completed Date:  2007-07-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375360     Medline TA:  J Chem Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  14502     Citation Subset:  -    
Affiliation:
Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd., N.W., Washington, DC 20015, USA. m.aihaiti@gl.ciw.edu
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