MAGNETIC-PROPERTIES OF (Y1-XZRX)CO3 COMPOUNDS

Magnetic measurements were performed on (Y1-xZrx)Co3 compounds, in the temperature range 5-700 K and external fields up to 70 kOe. The satur ation magnetizations and Curie temperatures decrease when increasing z irconium content. Above the Curie points the reciprocal susceptibiliti es follow Curie-Weiss type behaviour. The paramagnetic Curie temperatu res are negative for x > 0.35 and positive for smaller zirconium conte nt. The mean effective cobalt moments increase when increasing zirconi um content. The magnetic data are analyzed in a spin fluctuation model .