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Issue 5, 2017
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An Ising iron(II) chain exhibits a large finite-size energy barrier and “hard” magnetic behaviour

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Abstract

One-dimensional spin chains featuring strong axial anisotropic magnetism are promising candidates for isolatable and miniatured information storage materials, the so-called single-chain magnets (SCMs). Here we show a mixed azido/carboxylato bridged metamagnetic iron(II) chain [Fe(N3)2(4-mpc)]n (4-mpc = N-methylpyridinium-4-carboxylate) with a large energy barrier of 150 K, a large remnant magnetization (1.55) and coercivity (1.7 T at 2 K) for homo-spin SCMs. Heat capacity and Mössbauer spectroscopy studies corroborate the intrinsic nature of SCM behavior regardless of weak interchain magnetic interactions, which lead to the coexistence of metamagnetism but not long-range magnetic ordering. Moreover, detailed magnetic investigations indicate that the system is not only within the “Ising limit” but also in the “finite-size” regime.

Graphical abstract: An Ising iron(ii) chain exhibits a large finite-size energy barrier and “hard” magnetic behaviour

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Publication details

The article was received on 13 Oct 2016, accepted on 16 Dec 2016 and first published on 19 Dec 2016


Article type: Paper
DOI: 10.1039/C6DT03943J
Citation: Dalton Trans., 2017,46, 1449-1454

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    An Ising iron(II) chain exhibits a large finite-size energy barrier and “hard” magnetic behaviour

    Y. Deng, T. Han, W. Xue, N. Hayashi, H. Kageyama and Y. Zheng, Dalton Trans., 2017, 46, 1449
    DOI: 10.1039/C6DT03943J

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