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2003 Salamon, Myron B. Baily, Scott Alan 2015-09-25T20:02:43Z 2015-09-25T20:02:43Z 10000-01-01 2003 The Hall resistivity, magnetoresistance, and magnetization of a Gadolinium single crystal were measured in fields up to 30 T. Cobaltite films were grown via laser ablation and characterized by a variety of techniques. Hall resistivity, magnetoresistance, magnetization, and magnetothermopower of L 1-xCaxCoO3 samples with 0.15 < x < 0.4 were measured in fields up to 7 T. The Gd results suggest that Berry's phase contributes partially to the Hall effect near TC. Berry's phase theories hold promise for explaining the large anomalous Hall effect in La1-xCaxCoO3 near T C, but the material presents many additional complexities, including a unique low temperature magnetoresistance. At low temperature, the Hall effect may be best explained by spin-polarized carriers scattering off of orbital disorder in spin-ordered clusters. Made available in DSpace on 2015-09-25T20:02:43Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3101796.pdf: 3943508 bytes, checksum: 267b52d66e9bb3ee58845015f0a4fd32 (MD5) Previous issue date: 2003 Embargo set by: Seth Robbins for item 81774 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 92 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2003. http://hdl.handle.net/2142/80492 (MiAaPQ)AAI3101796 eng Physics, Condensed Matter Anomalous Hall Effect in Calcium -Doped Lanthanum Cobaltite and Gadolinium text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.