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Nanocrystalline iron at high pressure

Chen, B. and Penwell, D. and Kruger, M. B. and Yue, A. F. and Fultz, B. (2001) Nanocrystalline iron at high pressure. Journal of Applied Physics, 89 (9). pp. 4794-4796. ISSN 0021-8979. doi:10.1063/1.1357780.

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X-ray diffraction measurements were performed on nanocrystalline iron up to 46 GPa. For nanocrystalline epsilon-Fe, analysis of lattice parameter data provides a bulk modulus, K, of 179±8 GPa and a pressure derivative of the bulk modulus, K[prime], of 3.6±0.7, similar to the large-grained control sample. The extrapolated zero-pressure unit cell volume of nanocrystalline epsilon-Fe is 22.9±0.2 Å^3, compared to 22.3±0.2 Å^3 for large-grained epsilon-Fe. No significant grain growth was observed to occur under pressure.

Item Type:Article
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Fultz, B.0000-0002-6364-8782
Additional Information:© 2001 American Institute of Physics. (Received 4 January 2001; accepted 29 January 2001) The authors thank Dr. Jingzhu Hu for help with the XRD operation in X17C, NSLS. This work was supported by the National Science Foundation and the Petroleum Research Foundation.
Funding AgencyGrant Number
Petroleum Research FoundationUNSPECIFIED
Subject Keywords:iron; ferromagnetic materials; nanostructured materials; grain growth; elastic moduli; X-ray diffraction; lattice constants
Issue or Number:9
Record Number:CaltechAUTHORS:CHEjap01
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1905
Deposited By: Archive Administrator
Deposited On:23 Feb 2006
Last Modified:08 Nov 2021 19:43

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