Effects of chemically induced contraction of a coordination polyhedron on the dynamical magnetism of bis(phthalocyaninato)disprosium, a single-4f-ionic single-molecule magnet with a Kramers ground state

Naoto Ishikawa; Yoshifumi Mizuno; Satoshi Takamatsu; Tadahiko Ishikawa; Shin-ya Koshihara

doi:10.1021/ic8014892

Effects of chemically induced contraction of a coordination polyhedron on the dynamical magnetism of bis(phthalocyaninato)disprosium, a single-4f-ionic single-molecule magnet with a Kramers ground state

Inorg Chem. 2008 Nov 17;47(22):10217-9. doi: 10.1021/ic8014892. Epub 2008 Oct 15.

Authors

Naoto Ishikawa¹, Yoshifumi Mizuno, Satoshi Takamatsu, Tadahiko Ishikawa, Shin-ya Koshihara

Affiliation

¹ Department of Applied Chemistry, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan. ishikawa@chem.chuo-u.ac.jp

PMID: 18855382
DOI: 10.1021/ic8014892

Abstract

Chemically induced longitudinal contraction of the square-antiprism coordination polyhedron of a peripherically substituted bis(phthalocyaninato)dysprosiumate(III), a dysprosium-based single-4f-ionic single-molecule magnet having a J z = +/- (13)/ 2 Kramers doublet ground state, resulted in drastic changes in dynamical magnetism including a doubling of the energy barrier, a 2-order-of-magnitude decrease of the spin reversal rate, a significant rise of the blocking temperature, and the first observation of the emergence of a large remanent magnetization.