Melting of transition metals at high pressure and the influence of liquid frustration. I. The late metals Cu, Ni and Fe

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This report focuses on the role that frustration, or preferred liquid local causes ordering, plays in the melting of transition metals. Specifically, Cu, Ni and Fe. It is proposed that for liquids of metals with partially filled d-bands (Ni and Fe) frustration caused by Peierls/Jahn-Teller distortion and pressure-induced s-d electron promotion provides a mechanism for creating and enhancing the stability of local structures. At the most elementary level, liquid structures are essentially impurities that lower the freezing point. In the case of transition metals with partially filled d-bands, the application of pressure induces s-d electron promotion increases the concentration of ... continued below

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Ross, M; Boehler, R & Errandonea, D March 15, 2007.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 16 times . More information about this report can be viewed below.

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Description

This report focuses on the role that frustration, or preferred liquid local causes ordering, plays in the melting of transition metals. Specifically, Cu, Ni and Fe. It is proposed that for liquids of metals with partially filled d-bands (Ni and Fe) frustration caused by Peierls/Jahn-Teller distortion and pressure-induced s-d electron promotion provides a mechanism for creating and enhancing the stability of local structures. At the most elementary level, liquid structures are essentially impurities that lower the freezing point. In the case of transition metals with partially filled d-bands, the application of pressure induces s-d electron promotion increases the concentration of local structures. This leads to melting slopes for Ni and Fe that are considerably lower than measured for Cu, and lower than for theoretical predictions employing models in which liquid structures are neglected.

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PDF-file: 29 pages; size: 0.2 Mbytes

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  • Report No.: UCRL-TR-229360
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/908119 | External Link
  • Office of Scientific & Technical Information Report Number: 908119
  • Archival Resource Key: ark:/67531/metadc886880

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Office of Scientific & Technical Information Technical Reports

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  • March 15, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 29, 2016, 7:56 p.m.

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Ross, M; Boehler, R & Errandonea, D. Melting of transition metals at high pressure and the influence of liquid frustration. I. The late metals Cu, Ni and Fe, report, March 15, 2007; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc886880/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.