| dc.contributor.advisor |
Agnolet, Glenn |
en_US |
| dc.creator |
Anatska, Maryna Petrovna, 1977- |
en_US |
| dc.date.accessioned |
2007-04-25T20:16:39Z |
|
| dc.date.available |
2007-04-25T20:16:39Z |
|
| dc.date.created |
2006-12 |
en_US |
| dc.date.issued |
2007-04-25T20:16:39Z |
|
| dc.identifier.uri |
http://hdl.handle.net/1969.1/5019 |
|
| dc.description.abstract |
The thermal conductivity, thermopower, and electrical resistivity of
(R1.5Ce0.5)RuSr2Cu2O10-delta (R=Gd, Eu) polycrystalline samples with different oxygen
doping level are investigated in temperature range 1.8-300 K. Much attention is focused
on the dependence of the effect of the annealing in high oxygen pressures as well as the
effect of aging on transport coefficients in normal and superconducting states. It was
found that the process of deoxydation goes faster for Ru-1222(Eu) samples than for Ru-
1222(Gd) samples, which results in more pronounced granular effects in Ru-1222(Eu)
samples. The relative contribution to the thermal conductivity due to electrons and
phonons was estimated by using the Wiedemann-Franz relation and the resistivity data.
The calculation showed that the maximum electron contribution for Ru-1222(Eu) is
about 0.75% and that for Ru-1222(Gd) samples is around 4 %. |
en_US |
| dc.description.provenance |
Made available in DSpace on 2007-04-25T20:16:39Z (GMT). No. of bitstreams: 1
etd-tamu-2006C-PHYS-Anatska.pdf: 1844742 bytes, checksum: f3e75b8cef20595b591ab766370c70a8 (MD5) |
en |
| dc.format.extent |
1844742 bytes |
|
| dc.format.medium |
electronic |
en_US |
| dc.format.mimetype |
application/pdf |
|
| dc.language.iso |
en_US |
en_US |
| dc.publisher |
Texas A&M University |
en_US |
| dc.subject |
thermopower |
en_US |
| dc.subject |
thermal conductivity |
en_US |
| dc.title |
The transport coefficients in (R1.5Ce0.5)RuSr2Cu2O10-5 (R=Gd,Eu) rutheno-cuprates |
en_US |
| thesis.degree.department |
Physics |
en_US |
| thesis.degree.discipline |
Physics |
en_US |
| thesis.degree.grantor |
Texas A&M University |
en_US |
| thesis.degree.name |
M. S. |
en_US |
| thesis.degree.level |
Masters |
en_US |
| dc.contributor.committeeMember |
Guillemette, Renald |
en_US |
| dc.contributor.committeeMember |
Naugle, Donald G. |
en_US |
| dc.type.genre |
Electronic Thesis |
en_US |
| dc.type.material |
text |
en_US |
| dc.format.digitalOrigin |
born digital |
en_US |
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