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Substitutional allo...
Substitutional alloy of Ce and Al
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Zeng, Qiao-Shi (author)
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Ding, Yang (author)
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Mao, Wendy L. (author)
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- Luo, Wei (author)
- Uppsala universitet,KTH,Tillämpad materialfysik,Materialteori
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- Blomqvist, Andreas (author)
- Uppsala universitet,Materialteori
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- Ahuja, Rajeev (author)
- Uppsala universitet,KTH,Materialvetenskap,Materialteori
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Yang, Wenge (author)
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Shu, Jinfu (author)
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Sinogeikin, Stas V. (author)
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Meng, Yue (author)
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Brewe, Dale L. (author)
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Jiang, Jian-Zhong (author)
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Mao, Ho-Kwang (author)
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(creator_code:org_t)
- 2009-02-24
- 2009
- English.
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In: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 106:8, s. 2515-2518
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http://www.pnas.org/...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- The formation of substitutional alloys has been restricted to elements with similar atomic radii and electronegativity. Using high-pressure at 298 K, we synthesized a face-centered cubic disordered alloy of highly dissimilar elements (large Ce and small Al atoms) by compressing the Ce3Al intermetallic compound > 15 GPa or the Ce3Al metallic glass > 25 GPa. Synchrotron X-ray diffraction, Ce L-3-edge absorption spectroscopy, and ab initio calculations revealed that the pressure-induced Kondo volume collapse and 4f electron delocalization of Ce reduced the differences between Ce and Al and brought them within the Hume-Rothery (HR) limit for substitutional alloying. The alloy remained after complete release of pressure, which was also accompanied by the transformation of Ce back to its ambient 4f electron localized state and reversal of the Kondo volume collapse, resulting in a non-HR alloy at ambient conditions.
Keyword
- 4f electron delocalization
- Ce-Al solid solution alloy
- high pressure
- Hume-Rothery rules
- metallic glass
- high-pressure
- metallic glasses
- crystal-structure
- room-temperature
- alpha transition
- cerium metal
- behavior
- approximation
- potassium
- chemistry
- TECHNOLOGY
- TEKNIKVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Zeng, Qiao-Shi
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Ding, Yang
-
Mao, Wendy L.
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Luo, Wei
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Blomqvist, Andre ...
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Ahuja, Rajeev
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show more...
-
Yang, Wenge
-
Shu, Jinfu
-
Sinogeikin, Stas ...
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Meng, Yue
-
Brewe, Dale L.
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Jiang, Jian-Zhon ...
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Mao, Ho-Kwang
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show less...
- Articles in the publication
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Proceedings of t ...
- By the university
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Royal Institute of Technology
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Uppsala University