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Transport , Magnetic , and Thermal Properties of La 0 . 7 Ca 0 . 24 Sr 0 . 06 MnO 3 Single Crystal
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tank, Tejas M. Bodhaye, Ashish Mukovskii, Ya M. Sanyal, Sankar P. |
| Copyright Year | 2015 |
| Abstract | We report the transport, magnetic, and thermal properties of La 0.7 Ca 0.24 Sr 0.06 MnO 3 single crystal. It was prepared using floating zone technique used under oxygen pressure of 1 bar with a typical growth rate of 1mm/hr. The resistivity data shows the metal to insulator transition (M-I) occuring at TMI = 290K along the c-axis and at TMI = 280K along the ab-plane. It is observed that the TMI is higher along the c-axis as compared to that in the ab-plane, thus indicating that more favorable hoping of electrons is along the c-axis. From bolometric application point of view, the temperature coefficient of resistance (TCR) is found to be ∼28%K. The ac-susceptibility measurement shows that this material exhibits ferromagnetic to paramagnetic transition temperature (T C ) 277K. Sharp peak around this temperature in heat capacity data indicates the onset of long-range ordering.The entropy change associated with this transition is found to be 2.3 J/mol K. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://downloads.hindawi.com/journals/acmp/2013/305308.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
