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Issue 45, 2017
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Magnetic properties of Ln2CoGe4O12 and LnBCoGe4O12 (Ln = Gd, Tb, Dy, Ho, Er; B = Sc, Lu)

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Abstract

Polycrystalline samples of Ln2CoGe4O12 (Ln = Gd, Tb, Dy, Ho or Er) and LnBCoGe4O12 (B = Sc or Lu) have been prepared and characterised by a combination of magnetometry, 155Gd Mössbauer spectroscopy and, in the case of Tb2CoGe4O12 and TbScCoGe4O12, neutron diffraction. The holmium- and erbium-containing compositions remain paramagnetic down to 2 K, those containing dysprosium behave as spin glasses and the terbium and gadolinium-containing compounds show long-range magnetic order with transition temperatures below 4 K in all cases. The data can be rationalized qualitatively in terms of the interplay between magnetic anisotropy and crystal field effects.

Graphical abstract: Magnetic properties of Ln2CoGe4O12 and LnBCoGe4O12 (Ln = Gd, Tb, Dy, Ho, Er; B = Sc, Lu)

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Publication details

The article was received on 28 Sep 2017, accepted on 25 Oct 2017 and first published on 03 Nov 2017


Article type: Paper
DOI: 10.1039/C7DT03649C
Citation: Dalton Trans., 2017,46, 15778-15788
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    Magnetic properties of Ln2CoGe4O12 and LnBCoGe4O12 (Ln = Gd, Tb, Dy, Ho, Er; B = Sc, Lu)

    D. Xu, M. Avdeev, P. D. Battle and D. H. Ryan, Dalton Trans., 2017, 46, 15778
    DOI: 10.1039/C7DT03649C

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