Abstract
The structural, mechanical and transport properties of RuSr2GdCu2O8 sintered between 1000 and 1065 degrees C in O-2 atmosphere have been studied by XRD, microhardness and Seebeck coefficient measurements. The pellets have a tetragonal perovskite-type structure. Microhardness and bulk density of the considered samples increase with increasing sintering temperature. TEP is positive for all samples and decreases with increasing sintering temperature. The normal state TEP data are discussed in view of some theoretical models, namely a two-band model with an additional linear T term and variable range hopping models.