Superconductivity and magnetism in niobium doped YBa{sub 2}Cu{sub 3}O{sub 7} related high-{Tc} ceramics

Conference · Mon Feb 01 04:00:00 EST 1993

OSTI ID:10178607

Bennahmias, M ^[1]; Radousky, H B ^[1]; Goodwin, T J; Shelton, R N ^[2]

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1. Lawrence Livermore National Lab., CA (United States)
2. California Univ., Davis, CA (United States). Dept. of Physics

Magnetic characterization has been performed on the members of the cuprate-niobate RBa{sub 2}Cu{sub 2}NbO{sub 8} (R = Pr, Nd, and La) series and R{sub l.5}Ce{sub 0.5}Sr{sub 2}Cu{sub 2}NbO{sub 10} (R = Pr, Eu, Nd, and Sm) series. The PrBCNO samples show a signature in the magnetization of a magnetic ordering at 12 K. The PrCSCNO sample is non-superconducting and shows two distinct orderings at 17 and 53 K. No such magnetic phase transition is observed down to 2 K in the Nd and La based RBCNO materials or the Nd, Sm, and Eu based RCSCNO materials. Measurements of the lower critical field curve, dc irreversibility line, and critical current densities are reported for each of the superconducting NdCSCNO, SmCSCNO, and EuCSCNO compounds.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10178607
• Report Number(s): UCRL-JC--111591; CONF-9302103--4; ON: DE93018086; CNN: Grant DMR-90-21029
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204
360207
BARIUM OXIDES
CERIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
CRITICAL FIELD
CUPRATES
EUROPIUM OXIDES
HIGH-TC SUPERCONDUCTORS
LANTHANUM OXIDES
MAGNETISM
NEODYMIUM OXIDES
NIOBATES
NIOBIUM OXIDES
PHASE TRANSFORMATIONS
PRASEODYMIUM OXIDES
SAMARIUM OXIDES
STRONTIUM OXIDES
SUPERCONDUCTIVITY