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Multilayering and Ag-Doping for properties and performance enhancement in YBa2Cu3O7 films

Journal Article


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Abstract


  • Much denser ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7}$ (YBCO) superconducting films at least 1 $mu{rm m}$ thick with smooth surfaces have been obtained after introducing (Y/Nd)BCO multilayered structures. A significant enhancement of current carrying abilities has been achieved in these pulsed laser deposited films. The critical current density $(J_{c})$ has been increased by a factor of up to three in the entire field range. The imitation of the (Y/Nd)BCO multilayered structure by using YBCO interlayers has also exhibited a considerable improvement in the current carrying ability. Similarities and differences between these two multilayering approaches, leading to the observed effects, are discussed. The presence of interfaces even without element variation is likely to be the key to the improvements observed. In order to further promote $J_{c}$ enhancement, small multilayered additions of silver (Ag) to the films and multilayers provide various results: (i) rather strong enhancement for rather thin films and low addition levels, (ii) considerable degradation for large addition levels, and (iii) much less pronounced effect for thicker films. The enhancement of $J_{c}$ is observed in zero and low magnetic fields, but has almost no effect at higher fields. All these experimental observations are discussed in terms of pinning, transparency and structural modifications introduced during the deposition of the film structures.

Publication Date


  • 2007

Citation


  • Pan, A. V., Pysarenko, S., Wexler, D., Rubanov, S. & Dou, S. Xue. (2007). Multilayering and Ag-Doping for properties and performance enhancement in YBa2Cu3O7 films. IEEE Transactions on Applied Superconductivity, 17 (2), 3585-3588.

Scopus Eid


  • 2-s2.0-34547493558

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1446&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/433

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 3585

End Page


  • 3588

Volume


  • 17

Issue


  • 2

Abstract


  • Much denser ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7}$ (YBCO) superconducting films at least 1 $mu{rm m}$ thick with smooth surfaces have been obtained after introducing (Y/Nd)BCO multilayered structures. A significant enhancement of current carrying abilities has been achieved in these pulsed laser deposited films. The critical current density $(J_{c})$ has been increased by a factor of up to three in the entire field range. The imitation of the (Y/Nd)BCO multilayered structure by using YBCO interlayers has also exhibited a considerable improvement in the current carrying ability. Similarities and differences between these two multilayering approaches, leading to the observed effects, are discussed. The presence of interfaces even without element variation is likely to be the key to the improvements observed. In order to further promote $J_{c}$ enhancement, small multilayered additions of silver (Ag) to the films and multilayers provide various results: (i) rather strong enhancement for rather thin films and low addition levels, (ii) considerable degradation for large addition levels, and (iii) much less pronounced effect for thicker films. The enhancement of $J_{c}$ is observed in zero and low magnetic fields, but has almost no effect at higher fields. All these experimental observations are discussed in terms of pinning, transparency and structural modifications introduced during the deposition of the film structures.

Publication Date


  • 2007

Citation


  • Pan, A. V., Pysarenko, S., Wexler, D., Rubanov, S. & Dou, S. Xue. (2007). Multilayering and Ag-Doping for properties and performance enhancement in YBa2Cu3O7 films. IEEE Transactions on Applied Superconductivity, 17 (2), 3585-3588.

Scopus Eid


  • 2-s2.0-34547493558

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1446&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/433

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 3585

End Page


  • 3588

Volume


  • 17

Issue


  • 2