Synthesis, structure and low temperature study of electric transport and magnetic properties of GdSr_2MnCrO_7

摘要

The layered perovskite oxide, GdSr_2MnCrO_7, has been prepared by the standard ceramic method. The powder X-ray diffraction studies suggest that the phase crystallizes with tetragonal unit cell in the space group I4lmmm. The electrical transport properties show that the phase is an electrical insulator and the electrical conduction in the phase occurs by a 3D variable range hopping mechanism. The magnetic properties suggest that the ferromagnetic interactions are dominant in the high temperature region.