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Journal of Applied Physics / Volume 89 / Issue 9 / STRUCTURAL, MECHANICAL THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER (PACS 61-68, 78)

J. Appl. Phys. 89, 4794 (2001); doi:10.1063/1.1357780 (3 pages)

Nanocrystalline iron at high pressure

B. Chen1, D. Penwell1, M. B. Kruger1, A. F. Yue2, and B. Fultz2

1Department of Physics, University of Missouri, Kansas City, Missouri 64110
2Department of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125

(Received 4 January 2001; accepted 29 January 2001)

X-ray diffraction measurements were performed on nanocrystalline iron up to 46 GPa. For nanocrystalline ϵ-Fe, analysis of lattice parameter data provides a bulk modulus, K, of 179±8 GPa and a pressure derivative of the bulk modulus, K′, of 3.6±0.7, similar to the large-grained control sample. The extrapolated zero-pressure unit cell volume of nanocrystalline ϵ-Fe is 22.9±0.2 Å3, compared to 22.3±0.2 Å3 for large-grained ϵ-Fe. No significant grain growth was observed to occur under pressure. © 2001 American Institute of Physics.

© 2001 American Institute of Physics

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KEYWORDS and PACS

Keywords

iron, ferromagnetic materials, nanostructured materials, grain growth, elastic moduli, X-ray diffraction, lattice constants

PACS

ARTICLE DATA

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http://link.aip.org/link/doi/10.1063/1.1357780

PUBLICATION DATA

ISSN:

0021-8979 (print)  
1089-7550 (online)

Publisher:

$abstract.society.value is a Member of CrossRef American Institute of Physics

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