Enhancement of Jc by Hf-doping in the superconductor MgB2: A hyperfine interaction study

  title={Enhancement of Jc by Hf-doping in the superconductor MgB2: A hyperfine interaction study},
  author={Abhishek Talapatra and S. K. Das and Subir Bandyopadhyay and P. Barat and Pintu Sen and Rajeev Rawat and Alok Banerjee and Tilman Butz},
  journal={Journal of Physics and Chemistry of Solids},
2 Citations
Narrow Range of Hafnium Doping for Promoted Mechanical Properties and Critical Current Density (Jc) Values of Mg1−xHfxB2 Superconductor
Hafnium was used as a softener dopant to replace at magnesium sites of Mg1−xHfxB2 regime (where x=0.0, 0.05, 0.1, 0.2, and 0.4 mole). Samples were prepared via high temperature solid state reaction
Fabrication and magnetoresistivit of ex-situ processed MgB2/Fe monofilament tapes without any intermediate annealing
We have fabricated MgB2/Fe monofilament wires and tapes by a powder-in tube (PIT) technique, using an ex-situ process without any intermediate annealing. MgB2/Fe monofilament tapes were annealed at


Very high upper critical fields in MgB2 produced by selective tuning of impurity scattering
We report a significant enhancement of the upper critical field Hc2 of different MgB2 samples alloyed with nonmagnetic impurities. By studying films and bulk polycrystals with different resistivities
Enhancement of the critical current density and flux pinning of MgB2 superconductor by nanoparticle SiC doping
Doping of MgB2 by nano-SiC and its potential for the improvement of flux pinning were studied for MgB2−x(SiC)x/2 with x=0, 0.2, and 0.3 and for 10 wt % nano-SiC-doped MgB2 samples. Cosubstitution of
Ti and Zr doped MgB2 bulk superconductors
We report on a thorough characterisation of MgB2 bulk superconductors doped with 10 at% Ti (Tc = 36.54 K) or 10 at% Zr (Tc = 37.10 K). The upper critical field was determined resistively. It
Magnetization measurements of neon ion irradiated MgB2 superconductors
We report isothermal magnetization and magnetoresistance measurements performed on 160 MeV Ne+6 ion irradiated polycrystalline MgB2. After irradiation, the critical current density is observed to
High-field superconductivity in alloyed Mg B 2 thin films
We investigated the effect of alloying on the upper critical field $H_{c2}$ in 12 $MgB_2$ films, in which disorder was introduced by growth, carbon doping or He-ion irradiation, finding a significant
Effects of Al doping on the structural and electronic properties of Mg1-xAlxB2
We have studied the structural and electronic properties of Mg 1 - x Al x B 2 within the virtual crystal approximation (VCA) by means of first-principles total-energy calculations. Results for the
Phase formation of superconducting MgB2 at ambient pressure
MgB2 superconductor has been synthesized using a simple technique at ambient pressure. The synthesis was carried out in helium atmosphere over a wide range of temperatures. Magnesium was employed in
The widely variable resistivity of MgB2 samples
In this brief review, I consider a rather mundane property of MgB2, namely its resistivity as a function of temperature. It turns out that a comparison of resistivity data for a wide variety of