Magnetic behavior of the new low-Tc phase of SrRuO3

Abstract
Magnetic properties of the new phase of SrRuO 3 having a magnetic ordering temperature of 140 K (low- T c phase) is compared against that of the normal ferromagnetic phase of T c =160 K (high- T c phase). The symmetric acsusceptibility curve and an S-shaped M vs H curve of the low- T c phase suggests a spin-glasslike behavior. However, the value of M at 80 K is comparable for both the phases and the low- T c phase shows no magnetic aging effect expected for a spin glass. The low- T c phase is thus a ferromagnetic phase, the difference in the magnetic behavior of the low- T c phase from that of the high- T c phase probably originates from the domain structure.