A study reports the synthesis of five new mononuclear early lanthanide(III) organophosphates, encapsulated with 18-crown-6, and their magnetic characterization. The complexes were found to exhibit single-ion magnet (SIM) behavior, with significant barrier heights observed for Ce and Nd complexes. The study also conducted ab initio calculations to rationalize the observed single-ion magnetism.
🧲 Exciting discovery in data storage research! Scientists have successfully synthesized and characterized five novel early lanthanide(III) organophosphates with remarkable magnetic properties. These compounds exhibit single-ion magnet behavior, which holds tremendous potential for molecular-level data storage applications. By conducting magnetic susceptibility measurements and ab initio calculations, researchers identified the Ce and Nd complexes as particularly promising for data storage purposes. The study also emphasized the critical role of designing an optimal ligand field to enhance the magnetic anisotropy of lanthanide ions. This groundbreaking research opens up new possibilities for advancing data storage technology. #DataStorage #MagneticProperties #ScientificBreakthrough
Summary:
- 🔬 Five novel early lanthanide(III) organophosphates were synthesized and characterized.
- 🔬 18-crown-6 molecules coordinate to the lanthanide(III) ions in an equatorial position.
- 🔬 The axial positions of the lanthanide ions are occupied by phosphate moieties or a combination of phosphate moieties and a water molecule.
- 🔬 Magnetic susceptibility measurements revealed that the Ce and Nd complexes exhibited field-induced single-ion magnet behavior.
- 🔬 Ab initio calculations on selected complexes supported the observed single-ion magnetism and revealed significant quantum tunneling of magnetization (QTM) in the ground state.
- 🔬 The study highlights the potential of early lanthanide ions, such as Ce and Nd, to exhibit single-ion magnet behavior.
- 🔬 Designing a suitable ligand field is crucial for enhancing the inherent magnetic anisotropy of lanthanide ions.
The study focused on the synthesis and characterization of early lanthanide single-ion magnets (SIMs), which are molecules capable of storing data at the molecular level. The development of SIMs is crucial for advancing data storage technology and overcoming the limitations of conventional devices. The synthesized complexes consisted of early lanthanide(III) ions (Ce, Pr, Nd, Sm, and Eu) coordinated with 18-crown-6 molecules and organophosphate ligands. The lanthanide ions have a coordination geometry that looks like a muffin, wherein the equatorial positions are occupied by 18-crown-6 and the axial positions are occupied by phosphate moieties (sometimes a water molecule is present).
Magnetic susceptibility measurements were performed on the complexes, revealing that the Ce and Nd complexes exhibited field-induced single-ion magnet behavior, characterized by significant barrier heights. This indicates that these complexes have the potential for storing and manipulating magnetic information. Additionally, ab initio calculations were conducted on selected complexes (Ce and Nd) to gain insights into their electronic structure and magnetic properties. The calculations showed the presence of quantum tunneling of magnetization (QTM) in the ground state, which further supported the observed single-ion magnetism.
The study emphasized the importance of designing a suitable ligand field to enhance the magnetic anisotropy of lanthanide ions. For oblate-shaped ions like Ce and Nd, an axially stressed ligand field was found to be effective in achieving the desired magnetic properties. The results contribute to the understanding of early lanthanide ions’ potential for exhibiting single-ion magnet behavior and provide insights for the design of future SIMs.
Field-induced SIM behaviour in early lanthanide(iii) organophosphates containing 18-crown-6
- Aditya Borah,a Sourav Dey, a Sandeep K. Gupta, a Gopalan Rajaraman *a and Ramaswamy Murugavel *a
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India
- Five novel early lanthanide(III) organophosphates were synthesized and characterized.
- Designing a suitable ligand field is crucial for enhancing the inherent magnetic anisotropy of lanthanide ions.
