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

Abstract

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.

Authors:
 [1]; ; ; ;  [1]; ;  [1]
  1. Argonne National Lab., IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
OSTI Identifier:
205923
Report Number(s):
ANL/MSD/PP-82087
ON: DE96006138
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Jan 1994
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 66 PHYSICS; YTTRIUM OXIDES; CRITICAL CURRENT; IRRADIATION; BARIUM OXIDES; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; CURRENT DENSITY; ANNEALING; PROTON BEAMS

Citation Formats

Viswanathan, H K, Purdue Univ., Lafayette, IN, Kirk, P, Baldo, P, Welp, U, Crabtree, G W, Lee, W C, Giapintzakis, J, and Illinois Univ., Urbana, IL. Effect of proton irradiation and annealing on the critical current density in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} single crystals. United States: N. p., 1994. Web. doi:10.2172/205923.
Viswanathan, H K, Purdue Univ., Lafayette, IN, Kirk, P, Baldo, P, Welp, U, Crabtree, G W, Lee, W C, Giapintzakis, J, & Illinois Univ., Urbana, IL. Effect of proton irradiation and annealing on the critical current density in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} single crystals. United States. https://doi.org/10.2172/205923
Viswanathan, H K, Purdue Univ., Lafayette, IN, Kirk, P, Baldo, P, Welp, U, Crabtree, G W, Lee, W C, Giapintzakis, J, and Illinois Univ., Urbana, IL. 1994. "Effect of proton irradiation and annealing on the critical current density in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} single crystals". United States. https://doi.org/10.2172/205923. https://www.osti.gov/servlets/purl/205923.
@article{osti_205923,
title = {Effect of proton irradiation and annealing on the critical current density in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} single crystals},
author = {Viswanathan, H K and Purdue Univ., Lafayette, IN and Kirk, P and Baldo, P and Welp, U and Crabtree, G W and Lee, W C and Giapintzakis, J and Illinois Univ., Urbana, IL},
abstractNote = {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.},
doi = {10.2172/205923},
url = {https://www.osti.gov/biblio/205923}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}