Low temperature specific heat (zero field and with field) of Fe and Mn-doped MgB2

Ashok Rao, Bhasker Gahtori, S. K. Agarwal, Tirthankar Chakraborty, Chandan Kumar Sarkar, Anirban Das

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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.

Original languageEnglish
Pages (from-to)64-69
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume469
Issue number1
DOIs
Publication statusPublished - 01-01-2009

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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