Spin-density-wave magnetism in dilute copper-manganese alloys

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Elastic neutron-scattering measurements on two samples of Cu alloyed with 1.3% Mn and 0.55% Mn show that the spin-density-wave (SDW) features found in more concentrated alloys persist in the limit of very dilute alloys. These features consist of temperature-dependent incommensurate peaks in magnetic neutron scattering, with positions and strengths which are fully consistent with those in the concentrated alloys. The implications of these measurements are twofold. First, it is clear from this data that SDW magnetic ordering occurs across the entire range of CuMn alloys which have typically been interpreted as spin glasses. Second, the more fundamental significance of this … continued below

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11 p.

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Lamelas, F. J.; Werner, S. A.; Shapiro, S. M. & Mydosh, J. A. February 1, 1995.

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  • Lamelas, F. J. Marquette Univ., Milwaukee, WI (United States). Dept. of Physics
  • Werner, S. A. Univ. of Missouri, Columbia, MO (United States). Dept. of Physics
  • Shapiro, S. M. Brookhaven National Lab., Upton, NY (United States)
  • Mydosh, J. A. Kammerlingh Onnes Lab., Leiden (Netherlands)

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Description

Elastic neutron-scattering measurements on two samples of Cu alloyed with 1.3% Mn and 0.55% Mn show that the spin-density-wave (SDW) features found in more concentrated alloys persist in the limit of very dilute alloys. These features consist of temperature-dependent incommensurate peaks in magnetic neutron scattering, with positions and strengths which are fully consistent with those in the concentrated alloys. The implications of these measurements are twofold. First, it is clear from this data that SDW magnetic ordering occurs across the entire range of CuMn alloys which have typically been interpreted as spin glasses. Second, the more fundamental significance of this work is the suggestion via extrapolation that a peak in the magnetic susceptibility x(q) occurs in pure copper, at a value of q given by the Fermi-surface diameter 2k{sub F}.

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11 p.

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INIS; OSTI as DE95005121

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  • Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994

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  • Other: DE95005121
  • Report No.: BNL--61260
  • Report No.: CONF-941144--97
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 27820
  • Archival Resource Key: ark:/67531/metadc664864

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • February 1, 1995

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • April 22, 2021, 1:30 p.m.

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Lamelas, F. J.; Werner, S. A.; Shapiro, S. M. & Mydosh, J. A. Spin-density-wave magnetism in dilute copper-manganese alloys, article, February 1, 1995; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc664864/: accessed March 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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