ABSTRACT The research of dielectric properties of layered compound TlGaSe2 revealed, that it is ferroelectric. The research of paramagnetic susceptibility of layered compounds TlCrSe2, TlMnSe2 and TlCoSe2 revealed, that TlCrSe2 is ferromagnetic, TlMnSe2 is antiferromagnetic and TlCoSe2 is ferrimagnetic. The differential thermal analysis found regions of homogeneous and heterogeneous co-existence of electrical and magnetic orderings in the systems of TlGaSe2–Tl(Cr,Mn,Co)Se2.
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