Crystallographic and Magnetic Properties of KFeO{sub}2

摘要

Recently, the alkali materials[AFeO{sub}2: A=Li, Na, K] are increasing scientific interest as promising the low-cost substitutes for cathode materials in rechargeable lithium batteries. Especially, though potassium iron oxide was known as the material with the highest Neel temperatures among iron-oxide compounds[1-2], there have been very few reports on the KFeO{sub}2. Since this material is of very unstable nature due to easy oxidation of potassium, it is very difficult to get single phase KFeO{sub}2. In this work, we have synthesized successfully single phases of KFeO{sub}2, and then studied the magnetic and structure properties.