TITLE

Superconductivity in thin films of Bi-Sr-Ca-Cu oxide deposited via laser ablation of oxide pellets

AUTHOR(S)
Jaggi, N. K.; Meskoob, M.; Wahid, S. F.; Rollins, C. J.
PUB. DATE
October 1988
SOURCE
Applied Physics Letters;10/17/1988, Vol. 53 Issue 16, p1551
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have grown superconducting films on the technologically important sapphire substrates by CO2 pulsed laser ablation from fully superconducting targets of Bi2Sr3-xCaxCu2Oy followed by appropriate post-annealing. The composition of the films was found to deviate slightly from the target. Nevertheless, films with metallic resistivity decreasing between room temperature and 95 K, Tc(onset) of about 90 K and Tc(zero) of 72 K have been obtained. Magnetoresistance measurements in fields up to 12.85 T give a value of dHc2/dT of 1.6 T/K, which is intermediate between reported values of parallel and perpendicular Hc2 of fully aligned thin films. The implied partial orientation is consistent with the morphology seen by scanning electron microscopy.
ACCESSION #
9828449

 

Related Articles

  • Particulates reduction in laser-ablated YBa2Cu3O7-δ thin films by laser-induced plume heating. Koren, G.; Baseman, R. J.; Gupta, A.; Lutwyche, M. I.; Laibowitz, R. B. // Applied Physics Letters;5/21/1990, Vol. 56 Issue 21, p2144 

    Experimental demonstration of reduction in the number and size of particulates formed in the laser ablation deposition of YBa2Cu3O7-δ thin films is obtained by the use of a second laser which further heats and fragments the blowoff material in the plume formed by the first laser. This results...

  • Growth and properties of YBa2Cu3O7 thin films on vicinal and polycrystalline MgO substrates. Moeckly, B. H.; Russek, S. E.; Lathrop, D. K.; Buhrman, R. A.; Norton, M. G.; Carter, C. B. // Applied Physics Letters;12/31/1990, Vol. 57 Issue 27, p2951 

    We discuss the results of a study on the growth by laser ablation of YBa2Cu3O7 thin films on polycrystalline and annealed vicinal (001) MgO substrates. In both instances the films were found to grow predominantly with the c axis normal to the plane of the substrate, regardless of the orientation...

  • Time-resolved emission spectroscopy of the high Tc superconductor YBa2Cu3O7-x under laser ablation. Yoo, K. M.; Alfano, R. R.; Guo, Xiaoming; Sarachik, M. P.; Isaacs, L. L. // Applied Physics Letters;3/27/1989, Vol. 54 Issue 13, p1278 

    Time-resolved luminescence spectroscopy is described for high Tc YBa2Cu3O7-x under 8 ps/530 nm laser ablation. The emission spectrum covered most of the visible spectrum and showed emission lines from ions. The emission profiles in time consist of fast (≊25 ps) and slow (≊1 ns) decay...

  • Superconducting (Bi,Pb)-Ca-Sr-Cu-O thin films prepared in situ by laser ablation. Ivanov, Z.; Brorsson, G. // Applied Physics Letters;11/13/1989, Vol. 55 Issue 20, p2123 

    Superconducting Bi-Ca-Sr-Cu-O and Bi-Pb-Ca-Sr-Cu-O films were grown in situ by excimer laser ablation from pressed powder and sintered superconducting targets, respectively. The substrate temperature during deposition was found to be important to obtain a maximum transition temperature. Both 110...

  • Effects of beam parameters on excimer laser deposition of YBa2Cu3O7-δ. Muenchausen, R. E.; Hubbard, K. M.; Foltyn, S.; Estler, R. C.; Nogar, N. S.; Jenkins, C. // Applied Physics Letters;2/5/1990, Vol. 56 Issue 6, p578 

    Broad angular distributions have been observed for XeCl laser ablation plumes used in the deposition of YBa2Cu3O7-δ thin films. Distributions (inferred from film thickness) and film stoichiometry were measured as a function of laser fluence, beam shape, and oxygen pressure. Parallel to the...

  • Preparation of NdBa2Cu3O7-δ films in ultrahigh vacuum with a NO2 supersonic molecular beam. Nonaka, Hidehiko; Shimizu, Takashi; Arai, Kazuo // Applied Physics Letters;12/24/1990, Vol. 57 Issue 26, p2850 

    Superconducting NdBa2Cu3O7-δ thin films have been prepared in ultrahigh vacuum by the molecular beam epitaxy (MBE) method using a supersonic molecular beam of nitrogen dioxide as an oxidizing agent. A new type of supersonic molecular beam source has been developed, which has a liquid nitrogen...

  • Formation of thin superconducting films by the laser processing method. Narayan, J.; Biunno, N.; Singh, R.; Holland, O. W.; Auciello, O. // Applied Physics Letters;11/30/1987, Vol. 51 Issue 22, p1845 

    We have prepared thin films of Y-Ba-Cu-O superconductors using a pulsed laser evaporation technique. Thin films were formed on (100) Si, (100) MgO, (1102) sapphire, (100) SrTiO3, and amorphous SiO2 substrates using a XeCl excimer laser (λ=0.308 μm, τ=45×10-9 s). The depositions...

  • Superconducting thin films of Bi-Ca-Sr-Cu-O by sequential evaporation. Mogro-Campero, A.; Turner, L. G.; Garbauskas, M. F.; Green, R. W. // Applied Physics Letters;7/25/1988, Vol. 53 Issue 4, p327 

    Thin films of the high-temperature superconductor Bi-Ca-Sr-Cu-O have been produced by sequential evaporation and furnace annealing. Zero-resistance transition temperatures are near 70 K, with an onset temperature of about 85 K, which corresponds to transition temperatures measured on bulk...

  • Growth of Ultrathin YBa[sub 2]Cu[sub 3]O[sub 7 – ][sub x] Films on the SrTiO[sub 3] Substrate. Gol’man, E. K.; Il’in, R. N.; Plotkin, D. A.; Razumov, S. V.; Sakharov, V. I.; Serenkov, I. T. // Physics of the Solid State;Mar2000, Vol. 42 Issue 3, p406 

    The growth of ultrathin (1.7-7.3 nm)YBa[sub 2]Cu[sub 3]O[sub 7-x] films on the SrTiO[sub 3](100) substrate is investigated by the mean-energy ion scattering technique. It is found that the growth of islands proceeds according to the two-dimensional and three-dimensional models and depends on the...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics