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Issue 6, 2019
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Solvent-induced formation of two gadolinium clusters demonstrating strong magnetocaloric effects and ferroelectric properties

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Abstract

Two gadolinium clusters, [Gd2(H3L)2(NO3)2](NO3)2 (1) and [Gd3(HL)(H2L)(NO3)4]·C2H5OH (2) (H4L = N,N,N′,N′-tetrakis(2-hydroxyethyl)ethylenediamine), were synthesized and characterized with different solvents. The magnetic properties of 1 and 2 were recorded and studied in detail. 1 is a centrosymmetric binuclear Gd2 cluster, adopting a P[1 with combining macron] space group (point group [1 with combining macron]), and exhibits a strong magnetocaloric effect (MCE) entropy with −ΔSm of 27.50 J kg−1 K−1. 2 crystallizes in the Pna21 space group (polar point group mm2) through solvent modulation and contains an asymmetric trinuclear Gd3 cluster. Magnetic and ferroelectric investigations of 2 reveal a large change in the magnetocaloric effect entropy with −ΔSm of 30.22 J kg−1 K−1, ferroelectric hysteresis and dielectric anomalies.

Graphical abstract: Solvent-induced formation of two gadolinium clusters demonstrating strong magnetocaloric effects and ferroelectric properties

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Publication details

The article was received on 25 Oct 2018, accepted on 26 Dec 2018 and first published on 26 Dec 2018


Article type: Paper
DOI: 10.1039/C8DT04267E
Citation: Dalton Trans., 2019,48, 2228-2233

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    Solvent-induced formation of two gadolinium clusters demonstrating strong magnetocaloric effects and ferroelectric properties

    Y. Wang, Q. Xu, P. Ren, W. Shi and P. Cheng, Dalton Trans., 2019, 48, 2228
    DOI: 10.1039/C8DT04267E

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