TY - JOUR
T1 - Anionogenic Magnetism Combined with Lattice Symmetry in Alkali-metal Superoxide RbO2
AU - Astuti, Fahmi
AU - Miyajima, Mizuki
AU - Fukuda, Takahito
AU - Kodani, Masashi
AU - Nakano, Takehito
AU - Kambe, Takashi
AU - Watanabe, Isao
N1 - Funding Information:
The authors would like to thank the technical and scientific staff at PSI for their assistances. Research project 2017G636 was used for synchrotron XRD experiment at KEK-PF. The author would like to thank to RIKEN Junior Research Associate (JRA) Program and Lembaga Pengelola Dana Pendidikan (LPDP) for financial supports. This study is partially supported by the Bilateral Program of Japan Society for the Promotion of Science.
Funding Information:
Acknowledgment The authors would like to thank the technical and scientific staff at PSI for their assistances. Research project 2017G636 was used for synchrotron XRD experiment at KEK-PF. The author would like to thank to RIKEN Junior Research Associate (JRA) Program and Lembaga Pengelola Dana Pendidikan (LPDP) for financial supports. This study is partially supported by the Bilateral Program of Japan Society for the Promotion of Science.
Publisher Copyright:
Physical ©2019 Society The Author(s) of Japan
PY - 2019
Y1 - 2019
N2 - X-ray powder diffraction (XRPD), magnetic susceptibility and muon-spin relaxation (µSR) measurements were carried out to investigate lattice symmetries and magnetic properties of one of alkali-metal superoxides, RbO2. Two structural transitions were observed around 170 and 100 K in conjunction with the appearance of anomalies in the magnetic susceptibility. A static antiferromagnetic long-range ordered state of unpaired spins on O2 dumbbells with the full magnetic volume fraction was confirmed from µSR below about 15 K. In comparison with CsO2, it is suggested that small changes in the lattice symmetry driven by changes in the O2 dumbbell orientation causes different magnetic properties in alkali-metal superoxides.
AB - X-ray powder diffraction (XRPD), magnetic susceptibility and muon-spin relaxation (µSR) measurements were carried out to investigate lattice symmetries and magnetic properties of one of alkali-metal superoxides, RbO2. Two structural transitions were observed around 170 and 100 K in conjunction with the appearance of anomalies in the magnetic susceptibility. A static antiferromagnetic long-range ordered state of unpaired spins on O2 dumbbells with the full magnetic volume fraction was confirmed from µSR below about 15 K. In comparison with CsO2, it is suggested that small changes in the lattice symmetry driven by changes in the O2 dumbbell orientation causes different magnetic properties in alkali-metal superoxides.
UR - http://www.scopus.com/inward/record.url?scp=85067258262&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067258262&partnerID=8YFLogxK
U2 - 10.7566/JPSJ.88.043701
DO - 10.7566/JPSJ.88.043701
M3 - Article
AN - SCOPUS:85067258262
SN - 0031-9015
VL - 88
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 4
M1 - 043701
ER -