Magnetic behavior of the new low-Tc phase of SrRuO3

Magnetic properties of the new phase of SrRuO3 having a magnetic ordering temperature of 140 K (low-Tc phase) is compared against that of the normal ferromagnetic phase of Tc=160 K (high-Tc phase). The symmetric ac susceptibility curve and an S-shaped M vs H curve of the low-Tc phase suggests a spin-glasslike behavior. However, the value of M at 80 K is comparable for both the phases and the low-Tc phase shows no magnetic aging effect expected for a spin glass. The low-Tc phase is thus a ferromagnetic phase, the difference in the magnetic behavior of the low-Tc phase from that of the high-Tc phase probably originates from the domain structure.