Magnetization curves of TbZn2 in high magnetic fields

The magnetization of a single-crystalline sample of TbZn2 was measured under high magnetic fields up to 180 kOe in the temperature range from 4.2 to 90 K. The metamagnetic transitions were observed in the directions of all axes at temperatures below T N and along the c-axis at temperatures above T N . The metamagnetic transition field H M along the c-axis at temperatures above T N increases with increasing temperature.