Single-ion magnetism behaviors in lanthanide(iii) based coordination frameworks

Abstract

Single-ion magnets (SIMs) and single-molecule magnets (SMMs) are typically made up of 3d and/or 4f complexes that possess significant energy barriers to prevent the spin reversal behavior at the molecular...

Syntheses, crystal structures and properties of a series of isostructural lanthanide organic frameworks

“…4–21 In addition, the study of the magnetic behavior of MOFs paves the way for applications of magnetic refrigeration and data storage. 22–24…”

Structures and Single-Molecule Magnet Behavior of Dy3 and Dy4 Clusters Constructed by Different Dysprosium(III) Salts

“…Single-molecule magnets (SMMs) have attracted considerable attention in the field of information storage and luminescent thermometers because they can retain unquenched orbital angular momentum and are molecular materials. − Generally, Ln III ions have larger unquenchable orbital angular momentum and greater anisotropy compared to transition metals. Therefore, they are favorable candidates for constructing high-performance SMMs. − Usually, the parameters used to evaluate the performance of SMMs are a highly effective energy barrier ( U eff ) and blocking temperature ( T B ). − In the last 20 years, researchers have synthesized many complexes with different nuclear numbers: mononuclear, binuclear, tetranuclear, and hexanuclear. Of these, most studies have focused on mononuclear SMMs due to their simplicity as models for probing magneto-structural correlations. , In the most notable result, Layfield et al synthesized a mononuclear complex which T B broke the limit of liquid nitrogen .…”

LnIII/MnII–LnIII complexes derived from a salicylic azo dye ligand: synthesis, structures, magnetic and fluorescence properties

“…[1][2][3][4][5][6][7][8] Since the first Ln-SMM {TbPc 2 } was discovered in 2003, 9 a great number of lanthanide-based SMMs have been prepared and investigated in subsequent surveys, owing to the high-spin ground state and unquenched orbital angular momentum of lanthanide ions. [10][11][12][13][14] To obtain SMMs with good performance, a great number of efforts have been made to create lanthanide systems: for example, the dysprosium metallocene [(Cp ttt ) 2 Dy][B (C 6 F 5 ) 4 ] (Cp ttt = 1,2,4-tri-tert-butylcyclopentadienyl) 15 and [(Cp iPr5 ) Dy(Cp*)] + (Cp iPr5 = pentaisopropylcyclopentadienyl; Cp* = pentamethylcyclopentadienyl). 16 However, obvious quantum tunneling of magnetization (QTM) usually exists in the lanthanide-based SMMs, which is a disadvantage for obtaining high energy barriers.…”