NMR studies on polyphosphide Ce6Ni6P17

TMU International Symposium on "New Quantum Phases Emerging from Novel Crystal Structure"

Koyama, T.^1 ; Yamada, H.^1 ; Ueda, K.^1 ; Mito, T.^1 ; Aoyama, Y.^2 ; Nakano, T.^2 ; Takeda, N.^3

Graduate School of Material Science, University of Hyogo, Kamigori, Hyogo

678-1297, Japan^1

Graduate School of Science, Niigata University, Ikarashi 2, Niigata

950-2181, Japan^2

Faculty of Engineering, Niigata University, Niigata

950-2181, Japan^3

关键词: Antiferromagnetic correlations;    Cubic unit cells;    Knight shifts;    Local symmetry;    Localized spin;    Nuclear Magnetic Resonance (NMR);    Temperature dependence;    Weiss temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/683/1/012027/pdf
DOI  :  10.1088/1742-6596/683/1/012027

来源: IOP

【 摘 要 】

We report the result of31P nuclear magnetic resonance (NMR) studies on Ce6Ni6P17. The observed NMR spectra show a Lorentzian-type and an asymmetric shapes, reflecting the local symmetry around each P site in the cubic unit cell. We have identified the observed NMR lines corresponding to three inequivalent P sites and deduced the temperature dependence of the Knight shift for each site. The Knight shifts increase with decreasing temperature down to 1.5 K, indicating a localized spin system of Ce6Ni6P17. Antiferromagnetic correlation between 4f spins is suggested from the negative sign of the Weiss-temperature.