Electrical conductivity of iron under shock compression up to 200 GPa

The electrical conductivity of shock-compressed iron was measured up to 208 GPa by using an improved sample assembly in which the iron sample is encapsulated in a single-crystal sapphire cell. High-pressure shock compressions were generated by plate impact with a two-stage light-gas gun. The measure...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2002-11, Vol.14 (44), p.10849-10854
Main Authors: Bi, Yan, Tan, Hua, Jing, Fuqian
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Metal powders
Metals. Metallurgy
Powder metallurgy. Composite materials
Production techniques
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Summary:The electrical conductivity of shock-compressed iron was measured up to 208 GPa by using an improved sample assembly in which the iron sample is encapsulated in a single-crystal sapphire cell. High-pressure shock compressions were generated by plate impact with a two-stage light-gas gun. The measured conductivity of iron varies from 1.45 x 10 exp 4 Omega exp -1 cm exp -1 at 101 GPa and 2010 K, to 7.65 x 10 exp 3 Omega exp -1 cm exp -1 at 208 GPa and 5220 K. After analysing these data together with those reported previously, we found that the Bloch-Gruneisen expression is valid for epsilon -iron in the pressure and temperature range up to 208 GPa and 5220 K.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/14/44/389