Low temperature specific heat (zero field and with field) of Fe and Mn-doped MgB2 |
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| Authors: | Ashok Rao Bhasker Gahtori SK Agarwal Tirthankar Chakraborty Chandan Kumar Sarkar Anirban Das |
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| Institution: | 1. Department of Physics, Manipal Institute of Technology, Manipal 576104, India;2. Superconductivity and Cryogenics Division, National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India;3. Department of Electronics and Telecommunication Engineering, Jadavpur University, Kolkata 700032, India;4. Department of Physics, Sikkim Manipal Institute of Technology, Majitar, Rangpo, Sikkim 737132, India |
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| Abstract: | Polycrystalline samples of MgB2 superconductor (Mn-doped as well as pristine) were investigated by measurements of the electrical resistivity, magneto-resistance in the temperature range of 4–300 K. All the samples show metallic behaviour. It is observed that the upper critical field slightly decreases with Mn concentration. Specific heat measurements were performed with field as well as without field. For comparison, we also prepared one Fe-doped and specific heat measurements were also carried out on this sample. It is observed that the jump in specific heat decreases with increase in Mn content. |
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