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Flynn, C.P. Ritley, Kenneth Allan 2012-05-15T17:29:33Z 2012-05-15T17:29:33Z 10000-01-01 1998 The rare earth metals have the largest known magnetostrictions, so that their magnetic properties and structural properties are strongly coupled. This coupling is ideally suited for investigation with thin films, in which single crystal films of high quality can be prepared on substrates which cause their lattice parameters to differ from bulk values (strain) and which constrain the strictions which may occur (clamping). The present research describes a new MBE growth procedure to grow single crystal thin films and superlattices of rare earths with the hcp (llOO) b-axis normal to the growth plane. To explore the role of strain, clamping and symmetry-breaking in modifying the magnetic ordering temperatures, ultrathin films of strained Dy have been prepared between YxLu1-x alloy buffer layers, so that strain can be tuned from compressive (x=O) to tensile (x=l) and chosen values in between. The magnetic ordering temperatures, critical fields, and magnetization behavior vary systematically with strain. This behavior is interpreted in terms of fundamental magnetoelastic interactions and shape anisotropy. Submitted by William Weathers (weathrs2@illinois.edu) on 2012-05-15T17:29:33Z No. of bitstreams: 1 1998_ritley.pdf: 7100869 bytes, checksum: 01b32fb80345809c4cd5bd40ced5725c (MD5) Made available in DSpace on 2012-05-15T17:29:33Z (GMT). No. of bitstreams: 1 1998_ritley.pdf: 7100869 bytes, checksum: 01b32fb80345809c4cd5bd40ced5725c (MD5) Previous issue date: 1998 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Weathers (weathrs2@illinois.edu) on 2012-05-15T17:29:34Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:10:37-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only http://hdl.handle.net/2142/30850 4128643 en ©Ritley 1998 beta-axis growth behavior magnetoelastic behavior rare earth metals thin films superlattices Growth and magnetoelastic behavior of b-axis-oriented dysprosium Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.