Abstract

The results of crystal structure, bulk magnetic properties and magneticstructure investigations are reported for the intercalated compoundCr0.5TiSe2. The Cr atoms are found to be ordered in the hexagonalTiSe2 matrix forming a superlattice , b = a′, c = 2c′. The first neutron diffraction measurements performed for this compoundtogether with susceptibility and magnetization data have shown that thiscompound exhibits a complex incommensurate magnetic structure belowTN = 42 K. This structure is suggested to arise from the competition between the ferromagneticexchange interaction dominating mainly within the Cr layers and antiferromagneticinterlayer exchange. Because of weakness of the interlayer exchange in comparison withintralayer one this compound exhibits metamagnetic properties.

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