Local atomic structure of Zr–Cu and Zr–Cu–Al amorphous alloys investigated by EXAFS method

Jerzy Antonowicz , Anna Pietnoczka , W. Zalewski , Rajmund Bacewicz , M. Stoica , K. Georgarakis , A.R. Yavari

Abstract

We report on extended X-ray absorption fine structure (EXAFS) study of rapidly quenched Zr–Cu and Zr–Cu–Al glassy alloys. The local atomic order around Zr and Cu atoms was investigated. From the EXAFS data fitting the values of coordination number, interatomic distances and mean square atomic displacement were obtained for wide range of compositions. It was found that icosahedral symmetry rather than that of corresponding crystalline analogs dominates in the local atomic structure of Zr–Cu and Zr–Cu–Al amorphous alloys. Judging from bonding preferences we conclude that addition of Al as an alloying element results in considerable deviation from random mixing behavior observed in binary Zr–Cu alloys.
Author Jerzy Antonowicz (FP / SD)
Jerzy Antonowicz,,
- Semiconductors Division
, Anna Pietnoczka (FP / SD)
Anna Pietnoczka,,
- Semiconductors Division
, W. Zalewski - [Warsaw University of Technology (PW), MNiSW [80]]
W. Zalewski,,
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- Politechnika Warszawska
, Rajmund Bacewicz (FP / SD)
Rajmund Bacewicz,,
- Semiconductors Division
, M. Stoica - [Leibniz-Institut fur Festkorper- und Werkstoffforschung Dresden]
M. Stoica,,
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, K. Georgarakis - [Sciences et Ingénierie, Matériaux, Procédés (SIMaP)]
K. Georgarakis,,
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, A.R. Yavari - [Sciences et Ingénierie, Matériaux, Procédés (SIMaP)]
A.R. Yavari,,
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Journal seriesJournal of Alloys and Compounds, ISSN 0925-8388, (A 35 pkt)
Issue year2011
Vol509, Supplement 1
No0
PagesS34-S37
Keywords in Englishamorphous materials, Atomic scale structure, EXAFS, Metallic glasses
ASJC Classification2505 Materials Chemistry; 2506 Metals and Alloys; 2210 Mechanical Engineering; 2211 Mechanics of Materials
DOIDOI:10.1016/j.jallcom.2010.10.105
URL http://www.sciencedirect.com/science/article/pii/S0925838810026344
Languageen angielski
Score (nominal)35
Score sourcejournalList
Publication indicators WoS Citations = 16; Scopus Citations = 14; GS Citations = 11.0; Scopus SNIP (Source Normalised Impact per Paper): 2011 = 1.457; WoS Impact Factor: 2011 = 2.289 (2) - 2011=2.104 (5)
Citation count*11 (2016-01-24)
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