Improved flux pinning through Ce{endash}Mg additions in melt textured YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}

Journal Article · Mon Dec 01 04:00:00 EST 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.120488· OSTI ID:554321

McGinn, P J; Yeung, S; Banerjee, A; Fultz, J ^[1]

---

1. Department of Chemical Engineering, University of Notre Dame, Notre Dame, Indiana 46556 (United States)

The effects of Ce-based additions (CeO{sub 2} and BaCeO{sub 3}) in combination with MgO additions on the magnetic properties of melt textured YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} have been investigated. The additions lead to improvements in the magnetic properties of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} compared to samples with either addition alone or with no additions. The Ce{endash}Mg addition combination produces a {open_quotes}peak effect{close_quotes} in the magnetic hysteresis loop without significant T{sub c} degradation. This is postulated to be due to the formation of a new type of pinning center. Both Ce and Mg ions are thought to substitute in the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} lattice, creating defects that produce a peak effect in the magnetic hysteresis loop. Mg additions alone lead to a reduced Tc, while Ce additions restore the Tc and enhance the magnitude of the peak. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 554321
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 25 Vol. 71; ISSN 0003-6951; ISSN APPLAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
BARIUM OXIDES
CERIUM
CERIUM ADDITIONS
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
HYSTERESIS
MAGNESIUM
MAGNESIUM ADDITIONS
MAGNETIC FLUX
MAGNETIZATION
TEXTURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES