About this Research Topic
Lanthanide-based complexes that act as Single-Molecule Magnets (SMMs) have received increasing attention since the first phthalocyanine interlayer Tb(III) complex TbPc2 was reported in 2003 with high magnetic anisotropy and large spin ground state. More and more lanthanide-based SMMs have been reported, which have been the most promising candidates to build SMMs. This is for potential applications related to high-density information storage, quantum computing and spintronics to name a few. To date, the highest anisotropic energy barrier of SMMs has reached 1541 cm−1 and the blocking temperature (TB) has surpassed liquid nitrogen, which brings SMMs a step closer to practical applications. The remarkable progress in this field is due to the joint efforts of scientists in many fields involving physical theory and chemical experiments. Also of note is that the hysteresis temperature is still far from the actual operating temperature compared with the higher anisotropic energy barrier and many crucial problems that deserve further study.
The aim of this Research Topic is to bring together cutting-edge original research articles and reviews relating to the most recent experimental and theoretical findings in the field of lanthanide-based SMMs. We encourage new studies involving suppressing quantum tunnelling of magnetization (QTM) and improving the molecular magnetic anisotropy through chemical design. We also welcome new theoretical results that can help understand the problem of magnetic relaxation, as well as the studies of SMM surface attachment regarding future potential devices. Moreover, advances in multifunctional lanthanide-based molecular magnetic materials regarding luminescent, chiral, ferroelectric magnetic materials and magnetic refrigeration are also welcome.
The Topic Editors encourage submissions of Original Research, Review, Mini Review and Perspective articles that address, but are not limited to, the following themes:
• New theoretical and experimental results that help to understand the problem of magnetic relaxation involving quantum tunnelling of magnetization (QTM), Direct, Raman and Orbach processes etc.
• The efficient chemical strategies for suppressing QTM and improving local single-ion magnetic anisotropy of lanthanide-based SMMs, including the modification of symmetry and ligand field etc.
• Studies about lanthanide-based SMM surface attachment regarding future potential devices.
• Multifunctional lanthanide-based molecular magnetic materials, relating to luminescent, chiral and ferroelectric magnetic materials, etc.
• Strategies for high axial symmetry surrounding the spin centre, such as introducing magnetic coupling by a radical bridge, consideration of ligand and molecular vibrational modes, an elaborate configuration of coordination atoms with different electronic densities and construction of shorter coordination bonds between coordination atom and spin centre, etc.
• Incorporating lanthanide-based SMMs into metal-organic frameworks (MOFs), covalent organic frameworks (COFs) or fullerene etc.
Dr. Monteiro holds 2 patents concerning the use of ionic liquids in lanthanide extraction. The other Topic Editors have no competing interests.
Keywords: Co-ordination Clusters, Single-Molecule Magnets, Magnetic Interactions, Magnetic Anisotropy, Theoretical and Experimental Strategies
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