Effect of sintering temperature under high pressure in the uperconductivity for MgB2

Details Effect of sintering temperature under high pressure in the uperconductivity for MgB2 Effect of sintering temperature under high pressure in the uperconductivity for MgB2

2001-02-21

arxiv.org/abs/cond-mat/0102383v1

Appl. Phys. Lett. 78, 4157 (2001)

Physics

Condensed Matter

Superconductivity

3 Pages including 3 figures

Scientific paper

10.1063/1.1382632

We report the effect of the sintering temperature on the superconductivity of MgB2 pellets prepared under a high pressure of 3 GPa. The superconducting properties of the non-heated MgB2 in this high pressure were poor. However, as the sintering temperature increased, the superconducting properties were vastly enhanced, which was shown by the narrow transition width for the resistivity and the low-field magnetizations. This shows that heat treatment under high pressure is essential to improve superconducting properties. These changes were found to be closely related to changes in the surface morphology observed using scanning electron microscopy.

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