Author/Authors :
Horng Y. Tang، نويسنده , , Hsiao Y. Lin، نويسنده , , Ming J. Wang، نويسنده , , Ming Y. Liao، نويسنده , , Fon C. Hsu، نويسنده , , Boon H. Mok، نويسنده , , Jean L. Liu، نويسنده , , Michael T. Beasley، نويسنده , , Hwo S. Sheu، نويسنده , , Maw K. Wu، نويسنده ,
Abstract :
Bilayer hydrated Na0.35CoO2·1.3H2O structure has re-directed superconductivity research in recent years. Here, we develop a low temperature synthesis method to prepare a novel hydrous Cs0.2CoO2·0.63H2O compound in one step. The bilayer-hydrate of Cs0.2CoO2·0.63H2O with a greatest interlayer spacing d=10.0(2) Å among alkali cobalt oxides has been grown in crystal form. Magnetic susceptibility measurement of Cs0.2CoO2·0.63H2O displays a paramagnetic behavior down to 1.9 K. With the assistance of low temperature molten CsOH solvent, crystals of Rb0.30CoO2·0.36H2O and K0.35CoO2·0.4H2O can be grown. The results provide the capability for preparing a novel hydrous structure and the systematic investigation of interlayer coupling effect of alkali ion insertion compounds.
Keywords :
Rubidium cobalt oxide , Hydrous cobalt oxide , Bilayer hydrate , Cesium hydroxide , Magnetic susceptibility
