Magnetic properties of high-oxygen pressure prepared PrBa2Cu3O7-y cuprates

Y. H. Lin, B. N. Lin, Y. X. Lin, Yung-Yuan Hsu, T. I. Hsu, H. C. Ku

Research output: Contribution to journalConference article

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 languageEnglish
Pages (from-to)7484-7486
Number of pages3
JournalJournal of Applied Physics
Volume89
Issue number11 II
DOIs
Publication statusPublished - 2001 Jun 1
Event8th Joint Magnetism and Magnetic Materials-Intermag Conference - San Antonio, TX, United States
Duration: 2001 Jan 72001 Jan 11

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high pressure oxygen
cuprates
magnetic properties
oxygen
superconductivity
insulators
synthesis

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Magnetic properties of high-oxygen pressure prepared PrBa2Cu3O7-y cuprates. / Lin, Y. H.; Lin, B. N.; Lin, Y. X.; Hsu, Yung-Yuan; Hsu, T. I.; Ku, H. C.

In: Journal of Applied Physics, Vol. 89, No. 11 II, 01.06.2001, p. 7484-7486.

Research output: Contribution to journalConference article

Lin, Y. H. ; Lin, B. N. ; Lin, Y. X. ; Hsu, Yung-Yuan ; Hsu, T. I. ; Ku, H. C. / Magnetic properties of high-oxygen pressure prepared PrBa2Cu3O7-y cuprates. In: Journal of Applied Physics. 2001 ; Vol. 89, No. 11 II. pp. 7484-7486.
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AU - Hsu, T. I.

AU - Ku, H. C.

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AB - 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.

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