Crystallographic and magnetic characteristics of TI(InS <sub>2</sub>) <sub>1-­x</sub>(FeSe <sub>2</sub>) <sub>x</sub> solid solutions
The structural and magnetic characteristics of the TI(InS 2) 1-­x(FeSe 2) x crystals (0 ≤ x ≤ 0.015) are investigated. It's shown that a continuous series of solid solutions are formed in this system. It is found that the unit cell parameters of these compounds increase with increasing FeSe 2 concentrations. The abrupt change of the specific magnetization value is discovered on the temperature dependences of the Tl(InS 2) 0.995(FeSe 2) 0.005 solid solution magnetization in the fields with strength of less than 1 T, that is probably associated with the canted magnetic structure formation below 115 K. The growth of the FeSe 2 concentration in the studied solid solutions leads to the formation of a superparamagnetic state in the diamagnetic matrix.