Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1625797 | Journal of Alloys and Compounds | 2007 | 4 Pages |
Abstract
We review results from previous muon spin relaxation (μ SR) measurements in applied fields of H0=0H0=0 and 0.25 T which established an upper limit for the ordered or disordered frozen spin moment above T=4T=4 K in δ-Pu (4.3 at.% Ga) of μord≤10−3μBμord≤10−3μB. In addition, we present new data in H0=0.25H0=0.25 and 2 T applied field on a highly annealed δ-Pu (4.3 at.% Ga) sample. Neither the muon Knight shift (H0=2H0=2 T) nor the inhomogeneous linewidths in the new sample show appreciable temperature dependence below about T=60T=60 K, also consistent with no spin freezing. Recent theoretical arguments advanced to explain these results are mentioned.
Keywords
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Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
R.H. Heffner, K. Ohishi, M.J. Fluss, G.D. Morris, D.E. MacLaughlin, L. Shu, B.W. Chung, S.K. McCall, E.D. Bauer, J.L. Sarrao, T.U. Ito, W. Higemoto,