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2005
Cobalt
I 7200
35- 025
High-Pressure Synthesis and Structure of SrCo6O11: Pillared Kagome Lattice
System with a 1/3 Magnetization Plateau. — The new title compound is prepared
from equimolar mixtures of γ-NaxCoO2, SrCl 2, and KClO4 as oxidizer (700 °C, 2 GPa,
30 min). As revealed by single crystal XRD, SrCo6O11 crystallizes in the hexagonal
space group P63/mmc with Z = 2. The structure contains Co3O8 Kagome layers separated by two kinds of triangularly arranged Co—O pillars. One of the pillars, CoO5
bipyramids, produces interesting magnetism such as plateaus in magnetization. —
(ISHIWATA*, S.; WANG, D.; SAITO, T.; TAKANO, M.; Chem. Mater. 17 (2005) 11,
2789-2791; Inst. Chem. Res., Kyoto Univ., Uji, Kyoto 611, Japan; Eng.) —
W. Pewestorf
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