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Dr. M R Anantharaman >
Please use this identifier to cite or link to this item:
http://purl.org/purl/4414
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| Title: | Colossal thermoelectric power in Gd-Sr manganites |
| Authors: | Anantharaman, M R
Sagar, S
Ganesan, V
Joy, P A
Senoy, Thomas
Liebig, A
Albrecht, M |
| Issue Date: | 30-Jul-2010 |
| Publisher: | IOP Publishing LTD |
| Abstract: | Manganites belonging to the series Gd1−xSrxMnO3 (x=0.3, 0.4 and 0.5) were
prepared by wet solid-state reaction and their thermoelectric power was evaluated. Thermoelectric
power measurements revealed a peak value at ∼40 K. All the samples exhibited a colossal
thermopower at ∼40K and in that Gd0.5Sr0.5MnO3 exhibited a maximum value of ∼35mV/K,
which is the largest reported for these class of materials at this temperature. Temperaturedependent
magnetisation measurements showed that the samples exhibit a phase transition from
paramagnetic to spin-glass–like state at these temperatures. Plausible mechanisms responsible for
the observed colossal thermoelectric power in Gd-Sr manganites are discussed |
| Description: | EPL (Europhysics Letters),vol 91,issue 1,17008 |
| URI: | http://dyuthi.cusat.ac.in/purl/4414 |
| Appears in Collections: | Dr. M R Anantharaman
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