Magnetism and high-magnetic field magnetization in alkali superoxide CsO2

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

Research output: Contribution to journalArticlepeer-review


Alkali superoxide CsO2is one of candidates for the spin-1/2 one-dimensional (1D) antiferromagnet, which may be sequentially caused by an ordering of the π-orbital of O-2molecule below TS∼ 70 K. Here, we report on the magnetism in powder CsO2and high-magnetic field magnetization measurements in pulsed-magnetic fields of up to 60 T. We obtained the low temperature phase diagram around the antiferromagnetic ordering temperature TN= 9.6 K under the magnetic field. At 1.3 K, remarkable up-turn curvature in the magnetization around a saturation field of ∼ 60 T is found, indicating the low-dimensional nature of the spin system. The saturated magnetization is also estimated to be ∼ 1μB, which corresponds to the spin-1/2 . We will compare it with the theoretical calculation.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - 2018 Apr 1
Externally publishedYes

ASJC Scopus subject areas

  • General

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