Effect of proton irradiation and annealing on the critical current density in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} single crystals

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We have studied the effect of annealing up to 350{degrees}C on the critical current densities in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} single crystals that were irradiated with 3.5 MeV protons to a fluence of 1 {times} 10{sup 16} p+/cm{sup 2}. Large enhancements in the critical current densities, determined from DC-magnetization measurements, were observed immediately after irradiation at all temperatures for magnetic field orientations both parallel and perpendicular to the c-axis. These crystals were then annealed at room temperature, 100, 200, 300, and 350{degrees}C, and the critical current densities were determined after each annealing step. The annealing above room temperature resulted in ... continued below

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34 p.

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Viswanathan, H.K.; Kirk, P.; Baldo, P.; Welp, U.; Crabtree, G.W.; Lee, W.C. et al. January 1, 1994.

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We have studied the effect of annealing up to 350{degrees}C on the critical current densities in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} single crystals that were irradiated with 3.5 MeV protons to a fluence of 1 {times} 10{sup 16} p+/cm{sup 2}. Large enhancements in the critical current densities, determined from DC-magnetization measurements, were observed immediately after irradiation at all temperatures for magnetic field orientations both parallel and perpendicular to the c-axis. These crystals were then annealed at room temperature, 100, 200, 300, and 350{degrees}C, and the critical current densities were determined after each annealing step. The annealing above room temperature resulted in a reduction of the critical current densities for both directions of the magnetic field. The transition temperatures, determined from low field DC-magnetization measurements at each stage of the measurement sequence, decreased by about 0.5 K following the irradiation and recovered to their original value after annealing at higher temperatures. We propose a defect model to explain the observed pining and its anisotropy observed in this work and earlier work on electron and neutron irradiated YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} single crystals.

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34 p.

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OSTI as DE96006138

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  • Other Information: PBD: Jan 1994

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  • Other: DE96006138
  • Report No.: ANL/MSD/PP--82087
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/205923 | External Link
  • Office of Scientific & Technical Information Report Number: 205923
  • Archival Resource Key: ark:/67531/metadc672600

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  • January 1, 1994

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  • June 29, 2015, 9:42 p.m.

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  • Aug. 23, 2016, 3:31 p.m.

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Viswanathan, H.K.; Kirk, P.; Baldo, P.; Welp, U.; Crabtree, G.W.; Lee, W.C. et al. Effect of proton irradiation and annealing on the critical current density in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} single crystals, report, January 1, 1994; Illinois. (digital.library.unt.edu/ark:/67531/metadc672600/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.