Dynamics of laser-ablated particles from high Tc superconductor YBa2Cu3Oy

Eryu, Osamu; Murakami, Kouichi; Masuda, Kohzoh; Kasuya, Atsuo; Nishina, Yuichirô
June 1989
Applied Physics Letters;6/26/1989, Vol. 54 Issue 26, p2716
Academic Journal
The dynamics of light-emitting particles produced by the excimer laser ablation of the high Tc superconductor YBa2Cu3Oy has been investigated by means of space/time resolved optical measurements near the surface region with a space resolution of 100 μm and a time resolution of 0.1 ns. Two distinct components of ablated particles were observed: one with high average velocities over 5×106 cm/s and the other with slow velocities, depending on laser energy density. The position of the maximum emission intensity in the slower component moved away from the surface and was further delayed from the time of maximum laser intensity as the laser energy density increased. If the incident laser was tilted from the normal of the target surface, the spatial distribution of the luminous plume inclined toward the incident laser beam. These results suggest that the slower component consists of light-emitting particles resulting from the fragmentation of clusters ejected from the surface.


Related Articles

  • A laser-ablation system for deposition of high-temperature superconducting thin films for device applications. Tuohiniemi, M.; Kajava, T.; Katila, T.; Salomaa, M.M.; Salomaa, R.; Supponen, E. // Applied Physics A: Materials Science & Processing;1999, Vol. 69 Issue 7, pS451 

    Abstract. We present a compact-size laser-ablation system to produce high-temperature superconducting (HTS) YBa[sub 2] Cu[sub 3]O[sub 7-delta] (YBCO) thin fires for component applications. The system has been designed for deposition of multilayer structures on 5-cm-diameter substrates and for...

  • Fabrication and properties of high-Tc superconducting wires. Tiefel, T. H.; Jin, S.; Sherwood, R. C.; van Dover, R. B.; Fastnacht, R. A.; Davis, M. E.; Johnson, D. W.; Rhodes, W. W. // Journal of Applied Physics;11/15/1988, Vol. 64 Issue 10, p5896 

    Studies fabrication and properties of high-temperature superconducting wires. Method of the study; Results and discussion; Conclusion.

  • Bi-Sr-Ca-Cu-O high TC superconductors (abstract). Sherwood, R. C.; Tiefel, T. H.; Jin, S.; Davis, M. E.; Kammlott, G. W.; Fastnacht, R. A. // Journal of Applied Physics;11/15/1988, Vol. 64 Issue 10, p5815 

    Presents an abstract of the study 'Bi-Sr-Ca-Cu-O high TC superconductors,' by R.C. Sherwood, T.H. Tiefel, S. Jin, M.E. Davis, G.W. Kammiott and R.A. Fastnacht.

  • Thermal superconducting—normal transition of superconducting films, induced by the heating of nonsuperconducting defects in microwave fields. Zharov, A. A.; Reznik, A. N. // Technical Physics;Jan98, Vol. 43 Issue 1, p117 

    A study is made of the thermal superconducting-normal (S-N) transition induced in high-temperature superconducting films by the Joule heating of small nonsuperconducting defects in a microwave field. It is shown that the loss of superconductivity either leads to the formation of a finite region...

  • Vortex lattice melting in layered HTSC in the field of defects. Gracheva, M.E.; Kashurnikov, V.A. // Low Temperature Physics;Oct99, Vol. 25 Issue 10, p765 

    Investigates the effect of defect potential on the melting temperature of the vortex lattice in a layered high-temperature superconductor (HTSC). Shift of the phase transition point to the critical temperature; Expansion of the range of the intermediate phase 'rotating lattice.'

  • Determination of critical current density in bulk melt-processed high temperature superconductors... Kordyuk, A. A.; Nemoshkalenko, V. V. // Applied Physics Letters;9/13/1999, Vol. 75 Issue 11, p1595 

    Discusses the determination of critical current density in bulk melt-processed high temperature superconductors (HTS) from levitation force measurements. Limiting cases of HTS structure; Frozen image method for an infinite flat superconductor; Feasibility of the ideally hard superconductor...

  • Dependence of Tc on hole concentration in the superconductors Bi4Sr3Ca3-xYxCu4O16+δ. Manthiram, A.; Goodenough, J. B. // Applied Physics Letters;8/1/1988, Vol. 53 Issue 5, p420 

    Substitution of Y for Ca in the high Tc superconductor system Bi4Sr3Ca3-xYxCu4O16+δ (0≤x≤1.5) is accompanied by an increase in oxygen concentration δ≊0.34+0.3x that is insufficient to compensate for the increase in counter-cation valence. Nevertheless, Tc≊86 K...

  • Pyrophoric synthesis technique for multicomponent high-temperature superconductors. Bhattacharya, D.; Pathak, L. C.; Mishra, S. K.; Sen, D.; Chopra, K. L. // Applied Physics Letters;11/12/1990, Vol. 57 Issue 20, p2145 

    A pyrophoric technique using an explosive exothermic reaction has been developed to yield calcined and microscopically homogeneous (0.3 μm size) powders of multicomponent cuprate systems. The technique has been used to synthesize superconducting materials of variable composition of the type...

  • Quench tests of a 20-cm-long RABiTS YBCO tape. Lue, J. W.; Gouge, M. J.; Duckworth, R. C.; Lee, D. F.; Kroeger, D. M.; Pfotenhauer, J. M. // AIP Conference Proceedings;2002, Vol. 613 Issue 1, p457 

    A 20-cm-long YBCO tape fabricated by the Rolling Assisted Bi-axially Textured Substrate (RABiTS) technique was used to study the quench behavior of a second-generation high-temperature superconductor (HTS). Quench tests of the sample were performed in a conduction cooling condition with a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics