New rhenium containing seignettomagnets and ferroelectrics

Complex investigations are made (neutron diffraction study, high temperature X-ray analysis, dielectric measurements at low and superhigh frequency ranges, resonance (ESR and Mossbauer effect) and magnetic measurements) on the known compounds A2BReO6 (A = Ba, Sr; B = Li, Mg, Ca, Mn, Fe, Co, Ni) and under high pressure synthesized compounds Pb2BReO6 (B = Mg, Fe, Co, Ni) with the perovskite-type structure. The total sum of the results shows the presence of a spontaneously polarized state in the investigated compounds. Seven new seignettomagnets are found. [Russian Text Ignored].