Difference in icosahedral short-range order in early and late transition metal liquids

New short-range order data are presented for equilibrium and undercooled liquids of Ti and Ni. These were obtained from in situ synchrotron x-ray diffraction measurements of electrostatically levitated droplets. While the short-range order of liquid Ni is icosahedral, consistent with Frank's hy...

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Bibliographic Details
Published in:Physical review letters 2004-07, Vol.93 (3), p.037802.1-037802.4, Article 037802
Main Authors: LEE, G. W, GANGOPADHYAY, A. K, KELTON, K. F, HYERS, R. W, RATHZ, T. J, ROGERS, J. R, ROBINSON, I. D. S
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Physics
Quasicrystals
Semi-periodic solids
Structure of liquids
Structure of simple liquids
Structure of solids and liquids
crystallography
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Summary:New short-range order data are presented for equilibrium and undercooled liquids of Ti and Ni. These were obtained from in situ synchrotron x-ray diffraction measurements of electrostatically levitated droplets. While the short-range order of liquid Ni is icosahedral, consistent with Frank's hypothesis, significantly distorted icosahedral order is observed in liquid Ti. This is the first experimental observation of distorted icosahedral short-range order in any liquid, although this has been predicted by theoretical studies on atomic clusters.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.93.037802