Investigation of the ferromagnetic-spin glass transition in a-(Fe/sub 77/Cr/sub 23/)/sub 75/P/sub 16/B/sub 6/Al/sub 3/

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Elastic and inelastic neutron scattering studies were performed on the amorphous alloy (Fe/sub 77/Cr/sub 23/)/sub 75/P/sub 16/B/sub 6/Al/sub 3/. These measurements were conducted over a temperature range from 1.8 K to room temperature. The elastic scattering results obtained at Q = 0.025A/sup -1/ indicated a Curie temperature of 185/sup 0/K in addition to a ferromagnetic-spin glass transition below 20 K. These values are consistent with the phase diagram construction resulting from the magnetization and ac susceptibility measurements of Yeshurun et al. Inelastic neutron scattering measurements resulted in well-defined spin waves being observed in the ferromagnetic phase. For the small Q ... continued below

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Pages: 13

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Wicksted, J.P.; Shapiro, S.M. & Chen, H.S. October 1, 1983.

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Elastic and inelastic neutron scattering studies were performed on the amorphous alloy (Fe/sub 77/Cr/sub 23/)/sub 75/P/sub 16/B/sub 6/Al/sub 3/. These measurements were conducted over a temperature range from 1.8 K to room temperature. The elastic scattering results obtained at Q = 0.025A/sup -1/ indicated a Curie temperature of 185/sup 0/K in addition to a ferromagnetic-spin glass transition below 20 K. These values are consistent with the phase diagram construction resulting from the magnetization and ac susceptibility measurements of Yeshurun et al. Inelastic neutron scattering measurements resulted in well-defined spin waves being observed in the ferromagnetic phase. For the small Q range studied (0.05A/sup -1/ to 0.1A/sup -1/), the spin wave energies followed a quadratic dispersion. As the temperature was lowered towards the spin glass regime, the spin wave energies decreased indicating a softening of the magnetic stiffness constant. Below 10/sup 0/K, no well-defined spin wave excitations were present; however, a quasielastic peak, which increased slightly as the temperature was lowered, was observed.

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Pages: 13

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NTIS, PC A02/MF A01.

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  • MMM conference, Pittsburgh, PA, USA, 8 Nov 1983

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  • Other: DE84002874
  • Report No.: BNL-33827
  • Report No.: CONF-831187-10
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 5488740
  • Archival Resource Key: ark:/67531/metadc1093234

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Office of Scientific & Technical Information Technical Reports

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  • October 1, 1983

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  • Feb. 10, 2018, 10:06 p.m.

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  • April 4, 2018, 1:07 p.m.

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Wicksted, J.P.; Shapiro, S.M. & Chen, H.S. Investigation of the ferromagnetic-spin glass transition in a-(Fe/sub 77/Cr/sub 23/)/sub 75/P/sub 16/B/sub 6/Al/sub 3/, article, October 1, 1983; United States. (digital.library.unt.edu/ark:/67531/metadc1093234/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.