en
Scientific article
English

Structural and magnetocaloric properties of novel gadolinium borohydrides

Published inJournal of alloys and compounds, vol. 664, p. 378-384
Publication date2016
Abstract

Novel Gd-based mixed-metal borohydrides AnGd(BH4)n+3 (A = K, Cs) are described in view of their magnetic cooling properties at cryogenic temperatures. The magnetic entropy changes correlate well with Gd3+ isolation and structural dimensionality in the discovered perovskite-type and other compounds. Crystal structures are resolved from Synchrotron X-ray Powder Diffraction and refined with solid state calculations. The isolated Gd-centres in five-fold coordination in K2Gd(BH4)5, the first representative of a new structure type, lead to exceptionally high mass magnetic entropy change of 54.6 J kg−1 K−1 at the maximum field change of 9 T.

Keywords
  • Borohydride
  • Magnetocaloric effect
Research group
Citation (ISO format)
SCHOUWINK, Pascal et al. Structural and magnetocaloric properties of novel gadolinium borohydrides. In: Journal of alloys and compounds, 2016, vol. 664, p. 378–384. doi: 10.1016/j.jallcom.2015.12.182
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ISSN of the journal0925-8388
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Technical informations

Creation01/13/2016 12:14:00 PM
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