Abstract
In the present communication, effect of Mn substitution on thermal expansion of EuBa2Cu3-xMnxO7-δ has been investigated. Thermal expansion measurements have been carried out using a high resolution dilatometer based on three terminal capacitance method. The present set-up is sensitive enough to detect small changes in linear thermal expansion coefficient, a of less than 10"8 per Kelvin. Results show that the pristine sample exhibits a jump in thermal expansion coefficient around its transition temperature which is a characteristic of a second order phase transition. For the pure sample a jump in a, of the order of 9.5 × 10-8 K-1 has been observed. It is seen that Mn doping reduces the jump in thermal expansion. Using the well-known Ehrenfest relations, both the pressure dependence of Tc, dTc/dP and the discontinuity in compressibility, δK, are determined and are seen to decrease with increase in Mn concentration.
Original language | English |
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Pages (from-to) | 606-610 |
Number of pages | 5 |
Journal | Physics Procedia |
Volume | 36 |
DOIs | |
Publication status | Published - 01-01-2012 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)