2026-09-20T08:02:42Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/327382022-01-13T07:54:41Zcom_1721.1_7582com_1721.1_7581col_1721.1_131024
Young S. Lee.
Garcia, Daniel Robert, 1982-
Massachusetts Institute of Technology. Dept. of Physics.
Massachusetts Institute of Technology. Department of Physics
2006-05-15T20:26:30Z
2006-05-15T20:26:30Z
2004
2004
http://hdl.handle.net/1721.1/32738
56729590
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2004.
Includes bibliographical references (p. 40-41).
The discovery of unconventional superconductivity in hydrated Na₀Ì£₃CoO₂·1.3H₂0 has lead to active research work on the material over the last year due to its similarities and possible insight into the high-T[sub]c copper oxide superconductors as well as the possibility of other rich physical phenomenon. In this thesis, experimental evidence is presented illustrating the existence and properties of a previously unknown non-superconducting phase of Na₀Ì£₃CoO₂·1.3H₂0. This evidence includes magnetic susceptibility and x-ray scattering studies which suggest that the appearance of this phase is not due to underhydration and that a superconducting state can be restored via annealing at temperatures above roughly 340 K. Furthermore, synchrotron x-ray scattering of the non-superconductor reveals a 3-c modulation which is clearly absent in the superconducting phase of the material as well as unexpected temperature dependence behavior in the associated Bragg peaks.
by Daniel Robert Garcia.
S.B.
41 p.
2254509 bytes
2254872 bytes
application/pdf
application/pdf
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Physics.
Investigation of superconducting and non-superconducting phases of Na₀Ì£₃CoO₂·1.3H₂0
Thesis
application/pdf
false
Publication
unknown
unknown
<Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="a9b36b5e-6b2d-47a6-86c3-3e2821617a59">
<Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type>
<Language>eng</Language>
<Title>Investigation of superconducting and non-superconducting phases of Na₀Ì£₃CoO₂·1.3H₂0</Title>
<PublishedIn>
<Publication>
</Publication>
</PublishedIn>
<PublicationDate>2004</PublicationDate>
<Authors>
<Author>
<DisplayName>Garcia, Daniel Robert, 1982-</DisplayName>
<Affiliation>
<OrgUnit>
</OrgUnit>
</Affiliation>
</Author>
</Authors>
<Editors>
</Editors>
<Publishers>
<Publisher>
<DisplayName>Massachusetts Institute of Technology</DisplayName>
<OrgUnit />
</Publisher>
</Publishers>
<License>http://dspace.mit.edu/handle/1721.1/7582</License>
<Keyword>Physics.</Keyword>
<Abstract>The discovery of unconventional superconductivity in hydrated Na₀Ì£₃CoO₂·1.3H₂0 has lead to active research work on the material over the last year due to its similarities and possible insight into the high-T[sub]c copper oxide superconductors as well as the possibility of other rich physical phenomenon. In this thesis, experimental evidence is presented illustrating the existence and properties of a previously unknown non-superconducting phase of Na₀Ì£₃CoO₂·1.3H₂0. This evidence includes magnetic susceptibility and x-ray scattering studies which suggest that the appearance of this phase is not due to underhydration and that a superconducting state can be restored via annealing at temperatures above roughly 340 K. Furthermore, synchrotron x-ray scattering of the non-superconductor reveals a 3-c modulation which is clearly absent in the superconducting phase of the material as well as unexpected temperature dependence behavior in the associated Bragg peaks.</Abstract>
<Access xmlns="http://purl.org/coar/access_right"
>
</Access>
</Publication>