Structural study and electrical properties of a new arsenate compound KNb4MoAs3O18

Auteurs :  kaddour houria, mezaoui djillali
Année : 2010
Domaine : Chimie
Type : Communication
Conférence: First North African Crystallographic Confrence November 23rd-26th, 2010, Casablanca, Morocco
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés : Arsenate, Mixed valence oxide, physical properties

Résumé : 

A new compound the formula KNb4MoAs3O18 has prepared by solid state reaction technique. This compound crystallizes in the space group pbam with a=15.448A°, b=10.328A°, c=10.545A° and z=4. The structure consists of MO6 octahedra (M=Mo, Nb) and AsO4 tetrahedra sharing vertices, forming infinite chains (MO6-AsO4) the potassium atom is located in tunnels parallel to the b axis.