Radiation Damage Effects on the Magnetic Properties of Pu(1-x)Am(x) (x=0.224)

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Pu(Am) is stable in the fcc {delta}-phase from a few atomic percent to nearly 80 atomic percent Am, expanding the average interatomic separation as the alloy concentration of Am increases. Both Pu and Am spontaneously decay by {alpha}-emission creating self-damage in the lattice in the form of vacancy-interstitial pairs and their aggregates. At sufficiently low temperatures, the damage is frozen in place, but can be removed by thermal annealing at sufficiently high temperatures, effectively resetting the system to an undamaged condition. The magnetic susceptibility and magnetization are observed to increase systematically as a function of accumulated damage in the fcc ... continued below

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McCall, S K; Fluss, M J; Chung, B W; McElfresh, M W & Haire, R G December 14, 2006.

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Pu(Am) is stable in the fcc {delta}-phase from a few atomic percent to nearly 80 atomic percent Am, expanding the average interatomic separation as the alloy concentration of Am increases. Both Pu and Am spontaneously decay by {alpha}-emission creating self-damage in the lattice in the form of vacancy-interstitial pairs and their aggregates. At sufficiently low temperatures, the damage is frozen in place, but can be removed by thermal annealing at sufficiently high temperatures, effectively resetting the system to an undamaged condition. The magnetic susceptibility and magnetization are observed to increase systematically as a function of accumulated damage in the fcc {delta}-Pu{sub 1-x}Am{sub x} (x=0.224). Some results of these observations are reported here.

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PDF-file: 7 pages; size: 0.9 Mbytes

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  • Presented at: Materials Research Society Fall Meeting, Boston, MA, United States, Nov 26 - Nov 30, 2006

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  • Report No.: UCRL-PROC-226893
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 902266
  • Archival Resource Key: ark:/67531/metadc885437

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  • December 14, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 6, 2016, 6:09 p.m.

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McCall, S K; Fluss, M J; Chung, B W; McElfresh, M W & Haire, R G. Radiation Damage Effects on the Magnetic Properties of Pu(1-x)Am(x) (x=0.224), article, December 14, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc885437/: accessed November 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.