Vortex pinning in Nb films patterned with nano-scale hole-arrays.

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Description

Nb films containing extended arrays of holes with 45-nm diameter and 100-nm spacing have been fabricated using anodized aluminum oxide (AAO) as substrate. Pronounced matching effects in the magnetization are seen in fields up to 9 kOe. Flux pinning in the patterned samples is enhanced by two orders of magnitude as compared to unpatterned reference samples in applied fields exceeding 5 kOe. The matching effects are a dominant contribution to vortex pinning at temperatures as low as 4.2 K due to the nano-scale spacing of the holes.

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2 pages

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Welp, U.; Xiao, Z. L.; Jiang, J. S.; Vlasko-Vlasov, V. K.; Bader, S. D.; Crabtree, G. W. et al. September 17, 2002.

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Nb films containing extended arrays of holes with 45-nm diameter and 100-nm spacing have been fabricated using anodized aluminum oxide (AAO) as substrate. Pronounced matching effects in the magnetization are seen in fields up to 9 kOe. Flux pinning in the patterned samples is enhanced by two orders of magnitude as compared to unpatterned reference samples in applied fields exceeding 5 kOe. The matching effects are a dominant contribution to vortex pinning at temperatures as low as 4.2 K due to the nano-scale spacing of the holes.

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2 pages

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  • 23rd International Conference on Low Temperature Physics, Hiroshima (JP), 08/20/2002--08/27/2002

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  • Report No.: ANL/MSD/CP-108670
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 801606
  • Archival Resource Key: ark:/67531/metadc742552

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  • September 17, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • March 29, 2016, 3:28 p.m.

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Welp, U.; Xiao, Z. L.; Jiang, J. S.; Vlasko-Vlasov, V. K.; Bader, S. D.; Crabtree, G. W. et al. Vortex pinning in Nb films patterned with nano-scale hole-arrays., article, September 17, 2002; Illinois. (digital.library.unt.edu/ark:/67531/metadc742552/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.