Investigation of the High Field Magnetic Behavior of Dysprosium Antimonide.

The increased range of modern available superconducting magnets has made possible the extension of magnetization versus applied field measurements to 80 KG. A computer automated moving sample magnetometer was used to measure the component of the magnetization parallel to the applied field in dysprosium antimonide at 4.2K for fields applied in <100>, <110>, <11(')2>, and <111> directions. It was found that an applied field of 80 KGauss is still insufficient to cause a transition to paramagnetic saturation for <100>, <11(')2>, and <111> directions. The measured values of the parallel magnetization in the intermediate phase are consistent with the holmium phosphide magnetic structure for all directions of the applied field. When the field is applied in a <100> direction, the transition from quadrature phase to saturation was found to be first order. The measured value of the saturation magnetization is consistent with a dysprosium moment of 9.6(mu)(,B). The magnetization in the region of the transition displays "critical-exponent -like" behavior over short intervals of the field in spite of the first order nature of the transitions.