Abstract

A first-order magnetization process (FOMP) occurs in easy-axis tetragonal HoFe 11Ti at low temperatures when the field is applied parallel to the main planar crystallographic directions. The FOMP occurs at different applied-field strengths for different orientations. To investigate the FOMP in HoFe 11Ti in detail, we performed three-dimensional magnetometry on a single-crystalline sample. The results show that in fields lower than the field at which the FOMP starts, the magnetic moment rotates within the plane defined by the [0 0 1] direction and the applied field. The FOMP represents a rotation towards the applied magnetic field. Depending on the direction of the applied field, the magnetic moment may rotate out of the plane in which it originally resided.

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