Melting of Copper and Nickel at high pressure: the role of d-electrons

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Melting curves of Cu and Ni were measured to 97 GPa (3800 K) and 60 GPa (2970 K), respectively, in the laser-heated diamond cell. The measured melting temperatures of Cu are in good agreement with recent theoretical calculations. The melting slope (dT/dP) of Cu, which has a filled d-electron band, is about 2.5 times steeper than for Ni, which with one less electron, has a partially unfilled d-electron band. The relatively low melting slope obtained for Ni, measured using identical experimental methods as for Cu, is consistent with our previous measurements for other transition metals with partially filled d-bands, which ... continued below

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Japel, S; Boehler, R & Ross, M April 11, 2005.

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Melting curves of Cu and Ni were measured to 97 GPa (3800 K) and 60 GPa (2970 K), respectively, in the laser-heated diamond cell. The measured melting temperatures of Cu are in good agreement with recent theoretical calculations. The melting slope (dT/dP) of Cu, which has a filled d-electron band, is about 2.5 times steeper than for Ni, which with one less electron, has a partially unfilled d-electron band. The relatively low melting slope obtained for Ni, measured using identical experimental methods as for Cu, is consistent with our previous measurements for other transition metals with partially filled d-bands, which are in serious disagreement with theoretical estimates. The present results confirm the key role d-shell electrons play in determining the high pressure melting curves.

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PDF-file: 16 pages; size: 0.4 Mbytes

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  • Journal Name: Physical Review Letters, vol. 95, N/A, October 14, 2005, pp. 167801; Journal Volume: 95

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  • Report No.: UCRL-JRNL-211837
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 936448
  • Archival Resource Key: ark:/67531/metadc900450

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  • April 11, 2005

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 29, 2016, 7:56 p.m.

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Japel, S; Boehler, R & Ross, M. Melting of Copper and Nickel at high pressure: the role of d-electrons, article, April 11, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc900450/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.