Magnetism and high-magnetic field magnetization in alkali superoxide CsO2

Mizuki Miyajima, Fahmi Astuti, Takeshi Kakuto, Akira Matsuo, Dita Puspita Sari, Retno Asih, Kouichi Okunishi, Takehito Nakano, Yasuo Nozue, Koichi Kindo, Isao Watanabe, Takashi Kambe

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4 Citations (Scopus)


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 languageEnglish
Article number063704-1
Journaljournal of the physical society of japan
Issue number6
Publication statusPublished - 2018

ASJC Scopus subject areas

  • General Physics and Astronomy


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