Hyperfine‐Interaction‐Driven Suppression of Quantum Tunneling at Zero Field in a Holmium(III) Single‐Ion Magnet

An extremely rare non‐Kramers holmium(III) single‐ion magnet (SIM) is reported to be stabilized in the pentagonal‐bipyramidal geometry by a phosphine oxide with a high energy barrier of 237(4) cm−1. The suppression of the quantum tunneling of magnetization (QTM) at zero field and the hyperfine struc...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie International Edition 2017-04, Vol.56 (18), p.4996-5000
Main Authors: Chen, Yan‐Cong, Liu, Jun‐Liang, Wernsdorfer, Wolfgang, Liu, Dan, Chibotaru, Liviu F., Chen, Xiao‐Ming, Tong, Ming‐Liang
Format: Article
Language:English
Subjects:
Abundance
Chemical Sciences
Energy
Environments
Holmium
hyperfine interactions
Hysteresis
Hysteresis loops
lanthanides
Magnetic permeability
magnetic properties
Magnetic susceptibility
Magnetization
Phosphine
Phosphine oxide
Quantum tunnelling
Single crystals
single-molecule magnets
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An extremely rare non‐Kramers holmium(III) single‐ion magnet (SIM) is reported to be stabilized in the pentagonal‐bipyramidal geometry by a phosphine oxide with a high energy barrier of 237(4) cm−1. The suppression of the quantum tunneling of magnetization (QTM) at zero field and the hyperfine structures originating from field‐induced QTMs can be observed even from the field‐dependent alternating‐current magnetic susceptibility in addition to single‐crystal hysteresis loops. These dramatic dynamics were attributed to the combination of the favorable crystal‐field environment and the hyperfine interactions arising from 165Ho (I=7/2) with a natural abundance of 100 %. An extremely rare non‐Kramers holmium(III) single‐ion magnet is reported. The suppression of the quantum tunneling of magnetization at zero field and the hyperfine structures were observed in AC magnetic susceptibility measurements, and were attributed to the combination of a favorable crystal‐field environment and the hyperfine interactions arising from 165Ho (I=7/2) with a natural abundance of 100 %.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201701480