Magnetic properties of high-oxygen pressure prepared PrBa{sub 2}Cu{sub 3}O{sub 7{minus}y} cuprates

Journal Article · Fri Jun 01 04:00:00 EDT 2001 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1357859· OSTI ID:40204095

Lin, Y H; Lin, B N; Lin, Y X; Hsu, Y Y; Hsu, T I; Ku, H C

High oxygen pressure annealed PrBa{sub 2}Cu{sub 3}O{sub 7{minus}y} (y{similar_to}0) cuprates were prepared in order to study the effect of oxygen stoichiometric parameter y on the unusual Pr/Cu magnetic properties and/or recently reported superconductivity. The oxygen-rich orthorhombic 123-chain phase is highly unstable under high-oxygen pressure synthesis and decomposes completely in 10 bar pressure. For a smaller 2 bar prepared sample a relatively clean phase was preserved with an oxygen parameter y=0.05, as compared with y=0.11 from a conventional 1 bar flowing oxygen method. No superconductivity can be detected for all high-oxygen pressure prepared samples. Instead, Mott-insulator behavior with anomalous high Pr ordering T{sub N}(Pr)=19K was observed for PrBa{sub 2}Cu{sub 3}O{sub 6.95}. Comparison with other Pr/Ba intersubstituted Pr{sub 1{minus}x}Ba{sub 2{minus}x}Cu{sub 3}O{sub 7{minus}y} cuprates is discussed. {copyright} 2001 American Institute of Physics.

• Sponsoring Organization: (US)
• OSTI ID: 40204095
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 89; ISSN 0021-8979
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CUPRATES
MAGNETIC PROPERTIES
OXYGEN
PHYSICS
SUPERCONDUCTIVITY
SYNTHESIS