Evidence of the formation of a new rock-salt type compound Li2MgTiO4 and of its role on the properties of the Li doped MgTiO3

This work deals with the sintering of MgTiO3 in presence of Lithium salt and more precisely with lithium halide. These last sintering agents lead to the formation of a new rock-salt type structure Li2MgTiO4. This new phase was synthesized by a classical solid-state route and their electric and dielectric properties were characterize. The,formed material is a type I dielectric material with a permittivity close to 12 with dielectric losses inferiors to 0.3% in the range of -50 to 150 degrees C. X-ray diffraction and investigation by TEM were also performed. The influences of the formation of this new phase on the properties of MgTiO3 are described here. (C) 2006 Elsevier SAS. All rights reserved.