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Magnetism-driven an...
Magnetism-driven anomalous surface alloying between Cu and Cr
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- Kádas, Krisztina (author)
- Uppsala universitet,Institutionen för fysik och materialvetenskap
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Lindquist, M. (author)
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- Eriksson, Olle (author)
- Uppsala universitet,Institutionen för fysik och materialvetenskap
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- Johansson, Börje (author)
- Uppsala universitet,KTH,Tillämpad materialfysik,Institutionen för fysik och materialvetenskap
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- Vitos, Levente (author)
- Uppsala universitet,KTH,Tillämpad materialfysik,Institutionen för fysik och materialvetenskap
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(creator_code:org_t)
- AIP Publishing, 2009
- 2009
- English.
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In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 94:17
- Related links:
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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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- Cu-Cr contact materials are widely used as medium- and high-voltage vacuum interrupters. The microstructure of these materials is critical in their performance: the finer structure they have, the better are their physical properties. A solid solution of Cu and Cr could significantly increase the performance of such contact materials. However, Cu and Cr are practically immiscible in the bulk phase. Based on first principles density functional theory we show here that the solubility of Cr in Cu is dramatically increased on Cu surfaces already at room temperature and Cu-Cr alloys are formed on both the Cu(111) and Cu(100) surfaces. We demonstrate that the origin of this phenomenon is the unique magnetic properties of Cr atoms near surfaces.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- chromium alloys
- copper
- copper alloys
- crystal microstructure
- density
- functional theory
- solid solutions
- solubility
- surface alloying
- surface magnetism
- potential model
- metals
- vacuum
- approximation
- contacts
- growth
- energy
- copper
- iron
- Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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