Variation in the structural and magnetic properties induced by La doping in Pr(Br1-xLax)2Cu3O7+y

H. Y. Wang, C. H. Chang, S. R. Hwang, W. H. Li, K. C. Lee, J. W. Lynn, H. M. Luo, H. C. Ku

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

Neutron diffraction and ac magnetic susceptibility measurements were performed to study the effects of La doping on the structural and magnetic properties of polycrystalline Pr(Ba1-xLax)2Cu3O7+y. Structural studies using high-resolution neutron diffraction and Rietveld analysis indicate that La doping triggers the occupation of O on the antichain sites which reduces the degree of orthorhombicity in the system. Tetragonal symmetry was observed in the 29% La-doped compound. Magnetic orderings of the Pr ions as well as the Cu ions were evident in the susceptibility. The Pr spin ordering was confirmed by the neutron magnetic diffraction data. Significant reductions in the ordering temperature of Pr were found upon increased La doping, while the spin configuration remained. No obvious changes were observed in the ordering temperature of Cu.

原文???core.languages.en_GB???
頁(從 - 到)11549-11555
頁數7
期刊Physical Review B - Condensed Matter and Materials Physics
62
發行號17
DOIs
出版狀態已出版 - 1 11月 2000

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