Magnetic properties of Ln2CoGe4O12 and LnBCoGe4O12 (Ln = Gd, Tb, Dy, Ho, Er; B = Sc, Lu)
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Date
2017-11-03
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Royal Society of Chemistry
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. © Royal Society of Chemistry 2021
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Keywords
Polycrystals, Magnetometers, Spectroscopy, Neutron diffraction, Dysprosium, Terbium, Gadolinium, Anisotropy, Crystal field
Citation
Xu, D., Avdeev, M., Battle, P. D., & Ryan, D. H. (2017). Magnetic properties of Ln2CoGe4O12 and LnBCoGe4O12 (Ln = Gd, Tb, Dy, Ho, Er; B = Sc, Lu). Dalton Transactions, 46(45), 15778-15788. doi:10.1039/C7DT03649C