Magnetic structure in manganites as probed by magnetic force microscopy
| dc.contributor.advisor | Lozanne, Alex de | en |
| dc.creator | Israel, Emil Casey | en |
| dc.date.accessioned | 2008-08-28T22:39:17Z | en |
| dc.date.available | 2008-08-28T22:39:17Z | en |
| dc.date.issued | 2005 | en |
| dc.description | text | en |
| dc.description.abstract | This dissertation describes the use of magnetic force microscopy to directly measure the magnetic structure of a sample on a microscopic level. Our magnetic force microscope has been operated at temperatures ranging from 293 to 4.3 K and fields ranging from 0 to 3 T, providing a method for imaging temperature and field–dependent magnetic phase transitions and domain structures on a local scale. On the instrumentation side, I present details of the design, construction, and operation of a magnetic force microscope with coarse three dimensional tip/sample positioning. On the sample side, I focus primarily on the results of our studies concerning magnetic phase transitions in the manganite La1−x−yPryCaxMnO3, which for some dopings is a colossal magnetoresistive material. I will briefly discuss two ongoing projects: the use of our magnetic force microscope to image field–dependent domain structure in patterned magnetic manganite films and its use as an electrostatic force microscope. | |
| dc.description.department | Physics | en |
| dc.format.medium | electronic | en |
| dc.identifier | b61100821 | en |
| dc.identifier.oclc | 70870390 | en |
| dc.identifier.uri | http://hdl.handle.net/2152/2240 | en |
| dc.language.iso | eng | en |
| dc.rights | Copyright is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works. | en |
| dc.subject.lcsh | Magnetic resonance imaging | en |
| dc.subject.lcsh | Manganite | en |
| dc.title | Magnetic structure in manganites as probed by magnetic force microscopy | en |
| dc.type.genre | Thesis | en |
| thesis.degree.department | Physics | en |
| thesis.degree.discipline | Physics | en |
| thesis.degree.grantor | The University of Texas at Austin | en |
| thesis.degree.level | Doctoral | en |
| thesis.degree.name | Doctor of Philosophy | en |