Issue 5, 2015

Slow magnetic relaxation in a novel carboxylate/oxalate/hydroxyl bridged dysprosium layer

Abstract

A new 2D dysprosium layer compound has been successfully synthesized from reaction with 2-(3-pyridyl) pyrimidine-4-carboxylic acid (H3-py-4-pmc), in which the Dy3+ ions reside in square antiprismatic coordination environments and are connected by carboxylate/oxalate/hydroxyl bridges. Magnetic studies reveal ferromagnetic interactions between Dy3+ ions, slow magnetic relaxation with an effective energy barrier Ueff of 186 K under zero dc field and pronounced hysteresis loops at low temperatures. Further dilution magnetic study suggests that the slow magnetic relaxation originates from the single-ion magnetic behavior of Dy3+ ion and that magnetic coupling suppresses the quantum tunneling of magnetization at low temperature. In addition, theoretical calculation indicates strong Ising anisotropy of the Dy3+ ion that is due to the strong interaction between Dy3+ ions and hydroxyl groups.

Graphical abstract: Slow magnetic relaxation in a novel carboxylate/oxalate/hydroxyl bridged dysprosium layer

Supplementary files

Article information

Article type
Edge Article
Submitted
09 Feb 2015
Accepted
17 Mar 2015
First published
17 Mar 2015
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2015,6, 3095-3101

Slow magnetic relaxation in a novel carboxylate/oxalate/hydroxyl bridged dysprosium layer

D. Yin, Q. Chen, Y. Meng, H. Sun, Y. Zhang and S. Gao, Chem. Sci., 2015, 6, 3095 DOI: 10.1039/C5SC00491H

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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