A review of temperature-dependent magnetization data for nonsuperconducting PrBa2Cu4O8 and CmBa2Cu3O7 suggests that the failure of each to superconduct is related to the presence of Pr and Cm on their respective Ba sites. This defect is manifested, in each case, by short c-axis lattice parameters and anomalous high-temperature magnetic ordering which has been incorrectly attributed to ordering of the entire magnetic sublattice. Instead, it is shown that the anomalous high-temperature ordering as seen in the magnetization data is consistent with the ordering of magnetic ions substituted on the Ba site.
H. A. Blackstead et al., "Anomalous Magnetic Ordering in PrBa₂Cu₄O₈ and CmBa₂Cu₃O₇," Physical Review B, American Physical Society (APS), Jan 2008.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevB.77.014436
Keywords and Phrases
Curium Compounds; Lattice Constants; Magnetisation; Praseodymium Compounds
Library of Congress Subject Headings
Article - Journal
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