抄録
Electrical resistivity of the cubic CsCl-type ferromagnetic compound CeAg was measured at hydrostatic pressures p’s up to 18 kbar and in temperatures from 1.6 K to 300 K.
For p<2.2 kbar, the structural transition temperature from cubic to tetragonal was not accompanied with hysteresis and was pressure independent. For p≥2.2 kbar, the transition temperature increased largely with p, accompanied with wide hysteresis. These trends of pressure dependences are discussed based on the Jahn-Teller distortion model in reference to the alloying effect, CeAg1−xInx. The Curie temperature Tc increased rather rapidly at 2.2 kbar and took a maximum value around 7 kbar. The spin disordered resistivity increased rapidly at 2.2 kbar, but linearly with relatively small gradient above it. The correlation between magnetic and structural transition phenomena are analysed qualitatively, by taking above-mentioned results into account.
