TY - JOUR
T1 - An exotic ordered phase in the pyrochlore-like antiferromagnet Ni 2(OH)3Cl studied by NMR
AU - Sato, S.
AU - Oyamada, A.
AU - Nishiyama, M.
AU - Itou, T.
AU - Maegawa, S.
AU - Zheng, X. G.
AU - Hagihala, M.
PY - 2011
Y1 - 2011
N2 - We investigated a three-dimensional frustrated 3d-electron magnet on a pyrochlore-like lattice Ni2(OH)3Cl with s = 1 by means of 1H-NMR measurements. Previous specific heat measurements reported that this material shows a phase transition at 4.0 K and also has an anomaly at around 20 K. Our 1H-NMR measurement in 0.73 T has demonstrated that both the spin-lattice relaxation rates T1-1 and the spectra show clear evidences of a magnetic long-range ordering below 4.0 K. However, they do not show any anomalies at 20 K. By contrast the width of the 1H-NMR spectra in 4.3 T starts to deviate from linearity to the magnetization below 20 K, which suggests that the magnetic anisotropy is induced by the magnetic field. In addition, T1-1 starts to decrease below 20 K, which indicates the suppression of spin fluctuation. We discuss the unusual spin state below 20K.
AB - We investigated a three-dimensional frustrated 3d-electron magnet on a pyrochlore-like lattice Ni2(OH)3Cl with s = 1 by means of 1H-NMR measurements. Previous specific heat measurements reported that this material shows a phase transition at 4.0 K and also has an anomaly at around 20 K. Our 1H-NMR measurement in 0.73 T has demonstrated that both the spin-lattice relaxation rates T1-1 and the spectra show clear evidences of a magnetic long-range ordering below 4.0 K. However, they do not show any anomalies at 20 K. By contrast the width of the 1H-NMR spectra in 4.3 T starts to deviate from linearity to the magnetization below 20 K, which suggests that the magnetic anisotropy is induced by the magnetic field. In addition, T1-1 starts to decrease below 20 K, which indicates the suppression of spin fluctuation. We discuss the unusual spin state below 20K.
UR - http://www.scopus.com/inward/record.url?scp=81055147511&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/320/1/012029
DO - 10.1088/1742-6596/320/1/012029
M3 - Conference article
AN - SCOPUS:81055147511
SN - 1742-6588
VL - 320
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
M1 - 012029
T2 - International Conference on Frustration in Condensed Matter, ICFCM
Y2 - 11 January 2011 through 14 January 2011
ER -