Positive zero-field splitting and unexpected slow magnetic relaxation in the magneto-chemical calibrant HgCo(NCS)4

Roman Boča; Ján Titiš; Cyril Rajnák; J Krzystek

doi:10.1039/d1dt00407g

Positive zero-field splitting and unexpected slow magnetic relaxation in the magneto-chemical calibrant HgCo(NCS)₄

Dalton Trans. 2021 Mar 16;50(10):3468-3472. doi: 10.1039/d1dt00407g.

Authors

Roman Boča¹, Ján Titiš¹, Cyril Rajnák¹, J Krzystek²

Affiliations

¹ Department of Chemistry, Faculty of Natural Sciences, University of Ss Cyril and Methodius, 917 01 Trnava, Slovakia. roman.boca@ucm.sk.
² National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA.

PMID: 33650611
DOI: 10.1039/d1dt00407g

Abstract

DC magnetization data for HgCo(NCS)4 confirm positive value of the zero-field splitting D-parameter. High-frequency and -field EPR gave gz = 2.05, gx = 2.16 and D/hc = 5.39 cm-1. The complex exhibits a field-induced slow magnetic relaxation with two relaxation modes and unusual temperature evolution of the relaxation time.