Exploring tunable and exotic magnetism in metal-organic frameworks
e-mail: my@issp.u-tokyo.ac.jpLanguage in Speech : English
Metal-organic frameworks (MOFs) have recently arisen as a promising class of materials for exploring exotic magnetism [1]. Due to the flexibility of their unique synthetic routes, they allow for synthesis of magnetic structures that are difficult to achieve in inorganic materials. Furthermore, they introduce new types of magnetic tunability through effects such as pore guest-host interactions, ligand-mediated dimensional reduction, and ligand photosensitivity. Through a systematic study of bulk magnetic properties of different MOFs containing a single ligand (Cu-BIF, Co-BIF, Ni-BIF, where BIF = boron imidazolate framework), I will show how the magnitude of the magnetic interaction strength can be controlled by the ligand, while precise magnetic properties are controlled by the metal ion [2]. Additionally, using magnetic Raman scattering spectroscopy, I will show preliminary spectroscopic observations of magnetic excitations in V-bdc (bdc = 1,4-benzenedicarboxylate), also known as MIL-47, a one-dimensional MOF antiferromagnet with a tunable spin state. Finally, I will offer an outlook on promising directions for the future study of magnetic MOFs.
[1] Drichko, N., Thoi, V.S. & Armitage, N.P. npj Quantum Mater. 11, 24 (2026)[2] Davis, J. et al., Phys. Rev. B 110, 184426 (2024)