Аннотация
A new compound, K2Cr8O16 with the hollandite-type structure was synthesized under high temperature-pressure conditions ranging from 1100° to 1250° C and from 55 to 65 kbars. Its crystal structure was classified as C32h - C2/m with the lattice parameters a=13.820, b=2.941, c=9.772 A and beta=135°. Ferromagnetism was observed in this compound whose Curie temperature was 225 K and magnetic moment was approaximately 18 muB.
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