High-pressure synthesis and magnetic properties of layered double perovskites Ln{sub 2}CuMO{sub 6} (Ln = La, Pr, Nd, and Sm; M = Sn and Zr)

Journal Article · Thu Oct 01 04:00:00 EDT 1998 · Chemistry of Materials

DOI:https://doi.org/10.1021/cm980217g· OSTI ID:675631

Azuma, Masaki; Kaimori, Shingo; Takano, Mikio ^[1]

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1. Kyoto Univ., Uji (Japan). Inst. for Chemical Research

Ln{sub 2}CuSnO{sub 6} (Ln = Pr, Nd, and Sm) and La{sub 2}CuZrO{sub 6} have been stabilized in the same layered double perovskite structure as La{sub 2}CuSnO{sub 6} at high pressures of 6--8 GPa. Their crystal structures and magnetic properties were investigated. Replacement of La{sup 3+} by smaller lanthanide ions and Sn{sup 4+} by larger Zr{sup 4} increased the buckling of the Cu-O-Cu bonds in the CuO{sub 2} layers. In Nd{sub 2}CuSnO{sub 6}, both the Cu and Nd sublattice were found to exhibit weak ferromagnetism owing to spin canting. The magnetization data showed an anomalous transition at 110 K.

• OSTI ID: 675631
• Journal Information: Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 10 Vol. 10; ISSN CMATEX; ISSN 0897-4756
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
CRYSTAL STRUCTURE
HIGH-TC SUPERCONDUCTORS
LANTHANUM OXIDES
MAGNETIC PROPERTIES
NEODYMIUM OXIDES
PRASEODYMIUM OXIDES
SAMARIUM OXIDES
SYNTHESIS
TIN OXIDES
ZIRCONIUM OXIDES