Crystal and magnetic structure of the NiMn1−tTitGe system

Abstract

The magnetic and crystallographic nature of the compounds NiMn1−tTitGe (0 ≦ t ≦ 1) are studied by X-ray and neutron diffraction and magnetometric measurements. It is shown that the solid solutions arise for 0 ≦ t ≦ 1, with the crystal structure of the NiTiSi type. A magnetic phase diagram is constructed: for 0 ≦ t ≦ 0.1 helicoidal order exists, for 0.15 ≦ t ≦ 0.65 a noncolinear one. NiTiGe is Pauli paramagnetic. The interpretation of the results is performed in terms of a model proposed by Jaccarino and Walker. [Russian Text Ignored].