dc.contributor.author |
Raychaudhuri, A K
|
|
dc.contributor.author |
Guha, Ayan
|
|
dc.contributor.author |
Das, I
|
|
dc.contributor.author |
Rawat, R
|
|
dc.contributor.author |
Rao, C N R
|
|
dc.date.accessioned |
2012-10-26T09:27:45Z |
|
dc.date.available |
2012-10-26T09:27:45Z |
|
dc.date.issued |
2001 |
|
dc.identifier |
0038-1098 |
en_US |
dc.identifier.citation |
Solid State Communications 120(7-8), 303-306 (2001) |
en_US |
dc.identifier.uri |
https://libjncir.jncasr.ac.in/xmlui/10572/877 |
|
dc.description |
Restricted Access |
en_US |
dc.description.abstract |
We report the observation of substantial thermal relaxation in a single crystal of the charge ordered system Pr0.63Ca0.37MnO3 in an applied magnetic field of H = 8 T. The relaxation is observed when the temperature is scanned in the presence of a magnetic field in the temperature interval T-MH < T < T-CO, where T-CO is the charge ordering temperature and T-MH is the charge melting temperature in a field. In this temperature range, the system has coexisting charged ordered insulator (COT) and ferromagnetic metallic (FMM) phases. No such relaxation is observed in the COT state in H = 0 T or in the FMM phase at T < T-MH in the presence of a magnetic field. We conclude that the thermal relaxation is due to two coexisting phases with nearly the same free energies but separated by a potential barrier. This barrier makes the transformation from one phase to the other time-dependent in the scale of the specific heat experiment and gives rise to the thermal relaxation. (C) 2001 Elsevier Science Ltd. All rights reserved. |
en_US |
dc.description.uri |
http://dx.doi.org/10.1016/S0038-1098(01)00332-5 |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Pergamon-Elsevier Science Ltd |
en_US |
dc.rights |
© 2001 Elsevier Science Ltd |
en_US |
dc.subject |
insulators |
en_US |
dc.subject |
metals |
en_US |
dc.subject |
heat capacity |
en_US |
dc.subject |
Doped Manganites |
en_US |
dc.subject |
Conduction |
en_US |
dc.subject |
Percolation |
en_US |
dc.subject |
Transition |
en_US |
dc.subject |
Noise |
en_US |
dc.title |
Thermal relaxation in charge ordered Pr0.63Ca0.37MnO3 in the presence of a magnetic field |
en_US |
dc.type |
Article |
en_US |