{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T07:09:09Z","timestamp":1782976149193,"version":"3.54.5"},"reference-count":63,"publisher":"Acoustical Society of America (ASA)","issue":"4","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2007,10,1]]},"abstract":"<jats:p>\u03b1 -plutonium\u2019s volume-corrected polycrystal elastic moduli were measured between 18K and the upper limit of its occurrence, near 400K. The two independent moduli for a polycrystal\u2014bulk and shear\u2014behave smoothly, indicating no phase transition. Both moduli show the same 50% increase on cooling, an order of magnitude larger than in other metals. The Debye temperature obtained from low-temperature elastic moduli, 207K, significantly exceeds most previous estimates. The Gruneisen parameter \u03b3=5.3, obtained from the temperature dependence of the bulk modulus, is intermediate among previous estimates using other approaches, \u03b1-plutonium\u2019s Poisson ratio \u03bd is low: 0.18, nearly temperature independent, and its small decrease on warming opposes usual behavior. The high \u03b3, large but equal bulk modulus and shear modulus fractional stiffening on cooling, and near-temperature-invariant \u03bd are attributed to a single mechanism: 5-f electron localization\u2014delocalization.<\/jats:p>","DOI":"10.1121\/1.2767419","type":"journal-article","created":{"date-parts":[[2007,9,26]],"date-time":"2007-09-26T22:21:15Z","timestamp":1190845275000},"page":"1994-2001","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":20,"title":["Alpha-plutonium\u2019s polycrystalline elastic moduli over its full temperature range"],"prefix":"10.1121","volume":"122","author":[{"given":"A.","family":"Migliori","sequence":"first","affiliation":[{"name":"Los Alamos National Laboratory , Los Alamos, New Mexico 87545"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Pantea","sequence":"additional","affiliation":[{"name":"Los Alamos National Laboratory , Los Alamos, New Mexico 87545"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.","family":"Ledbetter","sequence":"additional","affiliation":[{"name":"Los Alamos National Laboratory , Los Alamos, New Mexico 87545"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"I.","family":"Stroe","sequence":"additional","affiliation":[{"name":"Los Alamos National Laboratory , Los Alamos, New Mexico 87545"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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