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An extremely rare non‐Kramers holmium(III) single‐ion magnet (SIM) is reported to be stabilized in the pentagonal‐bipyramidal geometry by a phosphine oxide with a high energy barrier of 237(4) cm−1. The suppression of the quantum tunneling of magnetization (QTM) at zero field and the hyperfine structures originating from field‐induced QTMs can be observed even from the field‐dependent alternating‐current...
Eine Unterdrückung des Quantentunnelns im Nullfeld und feldinduziertes Quantentunneln der Magnetisierung wurden in einem Holmium(III)‐Einzelmolekülmagnet beobachtet und von J.‐L. Liu, M.‐L. Tong et al. in der Zuschrift auf S. 5078 beschrieben. Diese Dynamik wird auf die Kombination einer günstigen pentagonal‐bipyramidalen Kristallfeldumgebung mit den Hyperfeinwechselwirkungen von 165Ho (I=7/2) mit...
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