Abstract
Alkali superoxide CsO2 is one of the candidates for the spin-12 one-dimensional (1D) antiferromagnet, which may be sequentially formed by an ordering of the π-orbital of O2 molecule below TS ∼ 70 K. Here, we report the magnetism and the high-magnetic field magnetization in pulsed-magnetic fields up to 60 T in powder CsO2. We obtained the low temperature phase diagram around the antiferromagnetic ordering temperature TN = 9.6 K under the magnetic field. At T = 1.3 K, we observed a remarkable up-turn curvature in the magnetization around a saturation field of ∼60 T, which indicates the low-dimensional nature of the spin system. The saturated magnetization is also estimated to be ∼1μB, which corresponds to spin-12. In this study we compare it with the theoretical calculation.
Original language | English |
---|---|
Article number | 063704-1 |
Journal | Journal of the Physical Society of Japan |
Volume | 87 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2018 |
Externally published | Yes |