Abstract
High oxygen pressure annealed PrBa2Cu3O7-y (y∼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 TN(Pr) = 19 K was observed for PrBa2Cu3O6.95. Comparison with other Pr/Ba intersubstituted Pr1-xBa2-xCu3O7-y cuprates is discussed.
Original language | English |
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Pages (from-to) | 7484-7486 |
Number of pages | 3 |
Journal | Journal of Applied Physics |
Volume | 89 |
Issue number | 11 II |
DOIs | |
Publication status | Published - 2001 Jun 1 |
Externally published | Yes |
Event | 8th Joint Magnetism and Magnetic Materials-Intermag Conference - San Antonio, TX, United States Duration: 2001 Jan 7 → 2001 Jan 11 |
ASJC Scopus subject areas
- General Physics and Astronomy