Pressure‐Induced Structural, Optical and Magnetic Modifications in Lanthanide Single‐Molecule Magnets

Abstract

Lanthanide Single‐Molecule Magnets are fascinating objects that break magnetic performance records with observable magnetic bistability at the boiling temperature of liquid nitrogen, paving the way for potential applications in high‐density data storage. The switching of lanthanide SMM has been successfully achieved using several external stimuli such as redox reaction, pH titration, light irradiation or solvation/desolvation thanks to the high sensitivity of the magnetic anisotropy to any structural change in the lanthanide surrounding. Nevertheless, the use of applied high pressure as an external stimulus is largely underused, especially considering that it can be combined with high pressure X‐ray diffraction to establish a complementary structure‐property relationship. This Concept article summarizes the few relevant examples of investigations of lanthanide SMMs under applied high pressure, provides conclusions on the effect of such stimulus on molecular structures and magnetic anisotropy, and finally draws perspective on the future development of magnetic measurements under applied pressure.

Polyoxoarsenotungstate in Oxalis Triangularis Arrangement Favors Slow Magnetic Relaxation for Both Prolate and Oblate Lanthanides

“…Lanthanide (Ln(III)) complexes have proven to be ideal candidates for single-molecule magnet (SMM) behavior as they possess remarkably large single-ion anisotropy and strong spin−orbit coupling with a wide range of applications in spintronics, quantum computing, and data storage . Among all of the Ln(III) ions, molecular complexes with Tb, Dy, Ho, and Er are explored to show SMM behavior due to their inherent anisotropic nature.…”