Spin dynamics of lanthanide-based single-molecule magnets

2016 Fiscal Year Final Research Report

• Project/Area Number: 26800178
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: Japan Atomic Energy Agency (2016); The University of Tokyo (2014-2015)
• Principal Investigator: Kofu Maiko 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 J－PARCセンター, 任期付研究員 (70549568)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 単分子磁石 / 中性子散乱

Outline of Final Research Achievements

We have investigated spin dynamics of single-molecule magnets (SMM) with lanthanide ions by means of neutron scattering techniques. The complexes with Kramers ion, Ce and Nd, echibit the SMM behavior; the relaxation of magnetization reversal is observed in the millisecond range. On the other hand, the complex with non-Kramers ion, Pr, is non-SMM. Inelastic neutron scattering works demonstrated that magnetic excitations are not detectable in the Ce and Nd complexes, while the Pr one clearly displays a low-energy excitation peak. These results suggest that spin parity is deeply correlated with magnetization reversal and appearance of low-energy excitations.

Free Research Field

化学物理