Site Split of Antiferromagnetic α-Mn Revealed by 55Mn Nuclear Magnetic Resonance

The magnetic structure of antiferromagnetic α-Mn has been unclarified for almost 70 years since its magnetism was discovered. We measured the zero-field nuclear magnetic resonance spectra of antiferromagnetic α-Mn to obtain further insight into magnetism below TN = 95 K. The site II spectra split in...

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Veröffentlicht in:Journal of the Physical Society of Japan 2022-11, Vol.91 (11), p.1
Hauptverfasser: Manago, Masahiro, Motoyama, Gaku, Nishigori, Shijo, Fujiwara, Kenji, Kinjo, Katsuki, Kitagawa, Shunsaku, Ishida, Kenji, Akiba, Kazuto, Araki, Shingo, Kobayashi, Tatsuo C, Harima, Hisatomo
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Sprache:eng
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Zusammenfassung:The magnetic structure of antiferromagnetic α-Mn has been unclarified for almost 70 years since its magnetism was discovered. We measured the zero-field nuclear magnetic resonance spectra of antiferromagnetic α-Mn to obtain further insight into magnetism below TN = 95 K. The site II spectra split into two sites with five subpeaks owing to quadrupole interaction, and this shows that the ordered moments at site II are slightly tilted from the [001] direction. The site III spectra revealed that this site splits into four sites below TN. These findings clearly demonstrate that the antiferromagnetic α-Mn symmetry is lower than previously considered.
ISSN:0031-9015
1347-4073
DOI:10.7566/JPSJ.91.113701