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Weissman, Michael B. Keener, Christopher Dana 2011-05-07T12:25:05Z 2011-05-07T12:25:05Z 10000-01-01 1994 "NiMn is known as a re-entrant spinglass. In some range of Mn concentrations it exhibits a transition from the paramagnetic to ferromagnetic states as it cools, and then crosses over into a regime with many magnetic properties similar to a spinglass but with a spontaneous moment. It has often been suggested that NiMn in this ""ferro-spinglass"" regime is a spinglass in the components of spins transverse to the overall ferromagnetic moment. Electrical noise and other transport data presented here, however, as well as a careful review of all the literature, suggests a different picture for at least thin film systems with partial short-range atomic order. In this picture it is clusters of spins rather than individual spins that have a random transverse component of magnetization. In addition to these results, electrical noise arising from the dynamics of ferromagnetic domains and domain walls is considered. The noise provides several examples of two-level systems that reveal the ferromagnetic structure and dynamics in different ranges of temperatures and domain sizes." Made available in DSpace on 2011-05-07T12:25:05Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9512423.pdf: 7316385 bytes, checksum: 978dadb7238c2b6599211fa4c36c268a (MD5) Previous issue date: 1994 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:40:46Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:17:32-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9512423 (UMI)AAI9512423 http://hdl.handle.net/2142/19985 eng Copyright 1994 Keener, Christopher Dana Physics, Electricity and Magnetism Physics, Condensed Matter Electrical noise studies of the re-entrant spinglass nickel-manganese text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.