Magnetic Properties of SrRuO_3 Single Crystal

概要

論文の詳細を見る
Magnetic measurements on single-crystal specimens of SrRuO_3 having perovskite structure were made by a magnetic balance. It was found that the ferromagnetic moment in SrRuO_3 could be technically saturated in a finite magnetic field along an easy axis, <110>. The spontaneous moment was estimated to be 1.10±0.09μ_B at 4.2K. The thermomagnetic curve could be well reproduced by the one calculated in the molecular-field approximation for S=1/2. The x^<-1> vs T curve measured obeys the Curie-Weiss law from 300 K to 700 K. SrRuO_3 has a fairly large amount of cubic magnetocrystalline anisotropy (K_1≅-1.6×10^6 erg/cm^3 at 4.2 K.) It is concluded that the reduced ferromagnetic moment in this case is smaller than the one expected for the low-spin state of Ru ions at the octahedral sites, and that this can not be attributed to any technical magnetization processes.
社団法人日本物理学会の論文
1976-12-15