Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-24T15:47:38.380Z Has data issue: false hasContentIssue false
  • English
  • Français

Critical current density and microstructure variations in YBa2Cu3O7−x + BaSnO3 films with different concentrations of BaSnO3

Published online by Cambridge University Press:  31 January 2011

C.V. Varanasi ,
J. Burke ,
L. Brunke ,
H. Wang ,
J.H. Lee  and
P.N. Barnes
C.V. Varanasi*
Affiliation:
University of Dayton Research Institute, Dayton, Ohio 45469-0170; and Air Force Research Laboratories, Wright Patterson Air Force Base, Ohio 45433
J. Burke
Affiliation:
University of Dayton Research Institute, Dayton, Ohio 45469-0170; and Air Force Research Laboratories, Wright Patterson Air Force Base, Ohio 45433
L. Brunke
Affiliation:
University of Dayton Research Institute, Dayton, Ohio 45469-0170; and Air Force Research Laboratories, Wright Patterson Air Force Base, Ohio 45433
H. Wang
Affiliation:
Texas A&M, College Station, Texas 77843-3128
J.H. Lee
Affiliation:
Texas A&M, College Station, Texas 77843-3128
P.N. Barnes
Affiliation:
Air Force Research Laboratories, Wright Patterson Air Force Base, Ohio 45433
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

Previous work on YBa2Cu3O7−x (YBCO) + BaSnO3 (BSO) films with a single composition showed significant critical current density (Jc) improvements at higher fields but lowered Jc in low fields. A detailed study on BSO concentrations provided here demonstrates that significant Jc enhancement can occur even up to 20 mol% BSO inclusion, where typical particulate inclusions in these concentrations degrade the YBCO performance. YBCO + BSO films were processed on (100) LaAlO3 substrates using premixed targets of YBa2Cu3O7-x (YBCO) with additions of 2, 4, 10, and 20 mol% BSO. The critical transition temperature Tc of the films remained high (>87 K), even with large amounts (20 mol%) of BSO. YBCO + BSO films showed a gradual increase in Jc at high fields as the amount of BSO was increased. More than an order of magnitude increase in Jc was measured in YBCO + BSO samples as compared to regular YBCO at 4 T. YBCO + 10 mol% BSO films showed overall improvement at all the field ranges while YBCO + 20 mol% BSO was better only at high fields. Transmission electron microscopy revealed the presence of ∼7–8-nm-diameter BSO nanocolumns, the density of which increased with increasing BSO content correlating well with the observed improvements in Jc.

Keywords

AblationSuperconductingThin film
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 12: Biomimetic and Bio-enabled Materials Science and Engineering , December 2008 , pp. 3363 - 3369
Copyright
Copyright © Materials Research Society 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Larbalestier, D., Gurevich, A., Feldman, D.M., Polyanski, A.: High T c superconducting materials for electric power applications. Nature 414, 368 2001CrossRefGoogle ScholarPubMed
2Barnes, P.N., Sumption, M.D., Rhoads, G.L.: Review of high power density superconducting generators: Present state and prospects for incorporating YBCO windings. Cryogenics 45, 670 2005CrossRefGoogle Scholar
3Haugan, T.J., Barnes, P.N., Wheeler, R., Meisenkothen, F., Sumption, M.: Addition of nanoparticle dispersions to enhance flux pinning of the YBa2Cu3O7−x superconductor. Nature 430, 867 2004CrossRefGoogle ScholarPubMed
4MacManus-Driscoll, J.L., Foltyn, S.R., Jia, Q.X., Wang, H., Serquis, A., Civale, L., Maiorov, B., Hawley, M.E., Maley, M.P., Peterson, D.E.: Strongly enhanced current densities in superconducting coated conductors of YBa2Cu3O7−x +BaZrO3. Nat. Mater. 3, 439 2004CrossRefGoogle ScholarPubMed
5Kang, S., Goyal, A., Li, J., Gapud, A.A., Martin, P.M., Heatherly, L., Thomson, J.R., Christen, D.K., List, F.A., Paranthaman, M., Lee, D.F.: High-performance high-T c superconducting wires. Science 311, 1911 2006CrossRefGoogle ScholarPubMed
6Varanasi, C., Barnes, P.N., Burke, J., Carpenter, J., Haugan, T.J.: Controlled introduction of flux pinning centers in YBa2Cu3O7−x films during pulsed laser deposition. Appl. Phys. Lett. 87, 262510 2005CrossRefGoogle Scholar
7Varanasi, C., Biggers, R., Maartense, I., Dempsey, D., Peterson, T.L., Solomon, J., McDaniel, J., Kozlowski, G., Nekkanti, R., Oberly, C.E. Pulsed laser deposition of Nd-doped Yba2Cu3O7−x,films for coated conductor applications in Advances in Laser Ablation of Materials edited by R.K. Singh, D.H. Lowndes, D.B. Chrisey, E. Fogarassy, and J. Narayan (Mater. Res. Soc. Symp. Proc. 526, Warrendale, PA, 1998), p. 263Google Scholar
8Song, X., Chen, Z., Kim, S., Feldman, D., Larbalestier, D., Reeves, J., Xie, Y., Selvamanickam, V.: Evidence for strong flux pinning by small, dense nanoprecipitates in a Sm-doped YBa2Cu3O7–δ coated conductor. Appl. Phys. Lett. 88, 212 2006CrossRefGoogle Scholar
9Zhou, H., Mairov, B., Wang, H., MacManus-Driscoll, J.L., Holesinger, T.G., Civale, L., Jia, Q.X., Foltyn, S.R.: Improved microstructure and enhanced low-field J c in (Y0.67Eu0.33)Ba2Cu3O7−δ films. Supercond. Sci. Technol. 21, 025001 2008CrossRefGoogle Scholar
10Varanasi, C.V., Barnes, P.N., Burke, J., Brunke, L., Maartense, I., Haugan, T.J., Stinzianni, E.A., Dunn, K.A., Haldar, P.: Flux pinning enhancement in YBa2Cu3O7−x films with BaSnO3 nanoparticles. Supercond. Sci. Technol. 19, L37 2006CrossRefGoogle Scholar
11Hänisch, J., Cai, C., Hühne, R., Schultz, L., Holzapfel, B.: Formation of nanosized BaIrO3 precipitates and their contribution to flux pinning in Ir-doped YBa2Cu3O7–δ quasi-multilayers. Appl. Phys. Lett. 86, 122508 2005CrossRefGoogle Scholar
12Mele, P., Matsumato, K., Horide, T., Ichinose, A., Mukaida, M., Yoshida, Y., Horii, S.: Enhanced high-field performance in PLD films fabricated by ablation of YSZ-added YBa2Cu3O7−x target. Supercond. Sci. Technol. 20, 244 2007CrossRefGoogle Scholar
13Campbell, T.A., Haugan, T.J., Maartense, I., Murphy, J., Brunke, L., Barnes, P.: Flux pinning effects of Y2O3 nanoparticulate dispersions in multilayered YBCO thin films. Physica C 423, 1 2005CrossRefGoogle Scholar
14Goyal, A., Kang, S., Leonard, K.J., Martin, P.M., Gapud, A.A., Varela, M., Paranthaman, M., Ijaduola, A.O., Specht, E.D., Thomson, J.R., Christen, D.K., Pennycook, S.J., List, F.A.: Irradiation-free, columnar defects comprised of self-assembled nanodots and nanorods resulting in strongly enhanced flux-pinning in YBa2Cu3O7−δ films. Supercond. Sci. Technol. 18, 1533 2005CrossRefGoogle Scholar
15Varanasi, C.V., Burke, J., Brunke, L., Wang, H., Sumption, M., Barnes, P.N.: Enhancement and angular dependence of transport critical current density in pulsed laser deposited YBa2Cu3O7−x + BaSnO3 films in applied magnetic fields. J. Appl. Phys. 102, 063909 2007CrossRefGoogle Scholar
16Mele, P., Matsumoto, K., Horide, T., Ichinose, A., Mukaida, M., Yoshida, Y., Horii, S., Kita, R.: Ultra-high flux pinning properties of BaMO3-doped YBa2Cu3O7−x thin films (M = Zr, Sn). Supercond. Sci. Technol. 21, 032002 2008CrossRefGoogle Scholar
17Varanasi, C.V., Barnes, P.N., Burke, J.: Enhanced flux pinning force and uniquely shaped flux pinning force plots observed in YBa2Cu3O7−x films BaSnO3 nanoparticles. Supercond. Sci. Technol. 20, 1071 2007CrossRefGoogle Scholar
18Kang, S., Goyal, A., Li, J., Martin, P., Ijaduola, A., Thomson, J.R., Paranthaman, M.: Flux-pinning characteristics as a function of density of columnar defects comprised of self-assembled nanodots and nonorods in epitaxial YBa2Cu3O7−x films for coated conductor applications. Physica C 457, 41 2007CrossRefGoogle Scholar
19Perula, M., Paturi, P., Stepanov, Yu.P., Huhtinen, H., Tse, Y.Y., Bodi, A.C., Raittila, J., Laiho, R.: Optimization of the BaZrO3 concentration in YBCO films prepared by pulsed laser deposition. Supercond. Sci. Technol. 19, 767 2006CrossRefGoogle Scholar
20Feng, J., Yeung, K.K., Wong, K.W., Fu, E.C.L., Lam, C.C.: Powder XRD investigation of crystal structure modification effects on superconductivity in the Sn–doped YBa2Cu3 SnxO7-d systems. Supercond. Sci. Technol. 13, 215 2000CrossRefGoogle Scholar
21Gapud, A.A., Kumar, D., Viswanathan, S.K., Cantoni, C., Varela, M., Abiade, J., Pennycook, S.J., Christen, D.K.: Enhancement of flux pinning in YBa2Cu3O7−δ thin films embedded with epitaxially grown Y2O3 nanostructures using a multi-layering process. Supercond. Sci. Technol. 18, 1502 2005CrossRefGoogle Scholar
22Sumption, M.D., Haugan, T.J., Barnes, P.N., Campbell, T.A., Pierce, N.A., Varanasi, C.: Magnetization creep and decay in YBa2Cu3O7−x thin films with artificial nanostructure pinning. Phys. Rev. B 77, 094506 2008CrossRefGoogle Scholar
23Rodriguez, J.P., Barnes, P.N., Varanasi, C.V.: In-field critical current of type-II superconductors caused by strain from nanoscale columnar inclusions. Phys. Rev. B 78, 052505 2008CrossRefGoogle Scholar