Sur Quelques Propriétés Physiques Des Métavanadates

Abstract

The study of magnetic properties of metavanadates o f potassium and ammonium shbws similarities i n g factors, spin-spin and spin-lattice relaxation, exchange interaction. Also, a transition between Zeeman levels can be induced by an electric microwave field.Differents metavanadates (IV, V) ont @te prepares. K2 V3 O8 a ete obtenu et etudie par POUCHARD, GALY et a1 (l) (2), (NH4)2 V3 O8 a geobtenu et Ctudie par THEOBALD et a1 ( 3 ) . La structure est du type P4bm. La figure (1

The crystal structures and quasi-one-dimensional electronic properties of Ag1+xV3O8and Na1+xV3O8

“…Both Ag 1+x V 3 O 8 and Na 1+x V 3 O 8 are known to be isomorphous to the Li system [6,7]. There are atomic parameters only for Ag 1+x V 3 O 8 , which suggest that xAg atoms are located out of the mirror plane in contrast to the Li system [8].…”