TY - JOUR
T1 - Magnetism and high-magnetic field magnetization in alkali superoxide CsO2
AU - Miyajima, Mizuki
AU - Astuti, Fahmi
AU - Kakuto, Takeshi
AU - Matsuo, Akira
AU - Sari, Dita Puspita
AU - Asih, Retno
AU - Okunishi, Kouichi
AU - Nakano, Takehito
AU - Nozue, Yasuo
AU - Kindo, Koichi
AU - Watanabe, Isao
AU - Kambe, Takashi
N1 - Funding Information:
Acknowledgment We would like to thank Professor T. C. Kobayashi for valuable discussions on magnetism of CsO2. The X-ray diffraction patterns were measured in research projects (2017G636) of KEK-PF. This research is partly supported by KAKENHI grants from Japan Society for the Promotion of Science (15H03529).
Publisher Copyright:
© 2018 The Physical Society of Japan.
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
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U2 - 10.7566/JPSJ.87.063704
DO - 10.7566/JPSJ.87.063704
M3 - Article
AN - SCOPUS:85046886914
SN - 0031-9015
VL - 87
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 6
M1 - 063704-1
ER -