Magnetic properties of Ho2Co17-xSix compounds

摘要

We have studied the magnetic properties ofHo2Co17-xSix compounds(x≤3) by means of magneticmeasurements and X-ray diffraction on magneticallyaligned powders. The Curie temperature and thespontaneous moment decrease strongly with increasingSi concentration. We have constructed the magneticphase diagram for the Ho2Co17-xSix system. The easymagnetization direction is parallel to the c-axis inan extended temperature region below the Curietemperature. A spin-reorientation transition takesplace at lower transition occurs at 1005K.