Abstract
An ion-exchangeable ruthenate with a layered structure, K 0.2RuO 2.1, was prepared by solid-state reactions. The interlayer cation was exchanged with H +, C 2H 5NH 3 +, and ((C 4H 9) 4N +) through proton-exchange, ion-exchange, and guest-exchange reactions. The electrical and magnetic properties of the products were characterized by DC resistivity and susceptibility measurements. Layered K 0.2RuO 2.1 exhibited metallic conduction between 300 and 13 K. The products exhibited similar magnetic behavior despite the differences in the type of interlayer cation, suggesting that the ruthenate sheet in the protonated form and the intercalation compounds possesses metallic nature.
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