2026-09-22T09:19:07Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/90524 2023-07-11 col_2142_5131 com_2142_5130

Schiffer, Peter E. Mason, Nadya DeMarco, Brian L. Vishveshwara, Smitha Le, Brian Lamson 2016-07-07T19:53:39Z 2016-07-07T19:53:39Z 2016-04-11 2016-05 Artificial spin ices are mesoscopic arrays of interacting single-domain ferromagnetic nanoislands or nanowires. With Ising-like behavior of individual magnetic moments, artificial spin ice has been utilized to investigate geometrically frustrated systems like spin ice, a class of magnetic pyrochlore oxides. Here I detail measurements of the magnetotransport response of connected artificial spin ice to varying temperatures and magnetic fields. In the literature, transport measurements have been used simply as a tool to probe the behavior of connected artificial spin ice. Here I demonstrate that connected artificial spin ice possesses fascinating intrinsic magnetotransport properties. I describe first the interplay between artificial spin ice transport and another magnetic phenomenon, exchange bias. Afterwards, I detail systematic transport measurements for different magnetic field directions, revealing that the vertices of connected artificial spin ice control facets of the transport features. Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-07-07 without embargo terms The student, Brian Le, accepted the attached license on 2016-04-11 at 14:00. The student, Brian Le, submitted this Dissertation for approval on 2016-04-11 at 14:22. This Dissertation was approved for publication on 2016-04-11 at 17:00. DSpace SAF Submission Ingestion Package generated from Vireo submission #9187 on 2016-07-07 at 13:29:51 Made available in DSpace on 2016-07-07T19:53:39Z (GMT). No. of bitstreams: 7 LE-DISSERTATION-2016.pdf: 6386784 bytes, checksum: a0f21f3db1d396ac88c6be9200b8548c (MD5) Appendix B - 20141031_armchair_L_B3 Field Sweeps.rar: 989151 bytes, checksum: 7d784a81ba0f7e7a1ed15c2a35b5ac1c (MD5) Appendix B - 20141031_armchair_L_E2 Field Sweeps.rar: 1109571 bytes, checksum: 9aa7451ef20d573015bff265e6b1fd72 (MD5) Appendix B - 20141031_zigzag_L_B1 Field Sweeps.rar: 265707 bytes, checksum: 1db52f7e7e966c13c2f9163755b75172 (MD5) Appendix B - 20150723_zigzag_G1 Field Sweeps.rar: 1273286 bytes, checksum: 9b4b6269d2a2d84c029b4a39c38f3588 (MD5) LICENSE.txt: 4205 bytes, checksum: f10ff97370053b6b363c9561615518d0 (MD5) PROQUEST_LICENSE.txt: 4551 bytes, checksum: 1f8ac9c02ff83a8f8a7e7f6e69be4ab0 (MD5) Previous issue date: 2016-04-11 application/pdf http://hdl.handle.net/2142/90524 en Copyright 2016 by Brian L. Le artificial spin ice frustrated magnetism magnetotransport exchange bias anisotropic magnetoresistance planar Hall effect Magnetotransport of connected artificial spin ice text text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.