Comprehensive Spectroscopic Determination of the Crystal Field Splitting in an Erbium Single-Ion Magnet

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• 作者：Yvonne Rechkemmer ; Julia E. Fischer ; Raphael Marx ; Mar铆a D枚rfel ; Petr Neugebauer ; Sebastian Horvath ; Maren Gysler ; Theis Brock-Nannestad ; Wolfgang Frey ; Michael F. Reid ; Joris van Slageren
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：October 14, 2015
• 年：2015
• 卷：137
• 期：40
• 页码：13114-13120
• 全文大小：434K
• ISSN：1520-5126

文摘

The electronic structure of a novel lanthanide-based single-ion magnet, {C(NH₂)₃}₅[Er(CO₃)₄]路11H₂O, was comprehensively studied by means of a large number of different spectroscopic techniques, including far-infrared, optical, and magnetic resonance spectroscopies. A thorough analysis, based on crystal field theory, allowed an unambiguous determination of all relevant free ion and crystal field parameters. We show that inclusion of methods sensitive to the nature of the lowest-energy states is essential to arrive at a correct description of the states that are most relevant for the static and dynamic magnetic properties. The spectroscopic investigations also allowed for a full understanding of the magnetic relaxation processes occurring in this system. Thus, the importance of spectroscopic studies for the improvement of single-molecule magnets is underlined.