Abstract
Abstract We carried out a comparative study of the thermal dilatation coefficient of molybdenum trioxide with and without Nd 3+ doping. The doped samples were obtained from a solid state reaction of MoO 3 and Nd 2 O 3 in concentrations from 0.2 to 20.0 at%. The prepared samples were analyzed as a function of the temperature through X-Ray diffraction (XRD), the chemical composition of the resultant material was studied using Energy Dispersive X-ray Spectroscopy (EDS). The results of the XRD show that the MoO 3 doped with Nd in concentrations of 0.2 and 1.0% atomic grows iso-structurally with α-MoO 3 . Moreover, MoO 3 doped with Nd 3+ in concentrations of 5.0, 10.0 and 20.0% atomic exhibits the monoclinic phase Mo 9 O 26 . Finally, we determined that the values of the thermal expansion coefficient of MoO 3 , doped and un-doped, differ by less than 3%.
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