Superconducting Mg-B films by pulsed laser deposition in an in-situ two-step process using multi-component targets

Details Superconducting Mg-B films by pulsed laser deposition in an in-situ two-step process using multi-component targets Superconducting Mg-B films by pulsed laser deposition in an in-situ two-step process using multi-component targets

2001-03-26

arxiv.org/abs/cond-mat/0103543v1

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures, submitted to Applied Physics Letters

Scientific paper

10.1063/1.1385345

Superconducting thin films have been prepared in a two-step in-situ process, using the Mg-B plasma generated by pulsed laser ablation. The target was composed of a mixture of Mg and MgB2 powders to compensate for the volatility of Mg and therefore to ensure a high Mg content in the film. The films were deposited at temperatures ranging from room temperature to 300 degrees C followed by a low-pressure in-situ annealing procedure. Various substrates have been used and diverse ways to increase the Mg content into the film were applied. The films show a sharp transition in the resistance and have a zero resistance transition temperature of 22-24 K.

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