Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Large reversible magnetocaloric effect due to a rather unstable antiferromagnetic ground state in Er4NiCd

Hermes, Wilfried LU ; Rodewald, Ute Ch. and Poettgen, Rainer (2010) In Applied Physics Reviews 108(11).
Abstract
Er4NiCd crystallizes with the Gd4RhIn type structure, space group F (4) over bar 3m, a=1333.3 pm. The nickel atoms have trigonal prismatic rare earth coordination. Condensation of the NiEr6 prisms leads to a three-dimensional network which leaves voids that are filled by regular Cd-4 tetrahedra. Er4NiCd shows Curie-Weiss behavior above 50 K with T-N=5.9 K. At field strength of 4 kOe a metamagnetic step is visible, together with the positive paramagnetic Curie-temperature (7.5 K) indicative for the rather unstable antiferromagnetic ground state. Therefore, a large reversible magnetocaloric effect (MCE) near the ordering temperature occurs and the values of the maximum magnetic-entropy change -Delta S-M(max) reach 18.3 J kg(-1) K-1 for the... (More)
Er4NiCd crystallizes with the Gd4RhIn type structure, space group F (4) over bar 3m, a=1333.3 pm. The nickel atoms have trigonal prismatic rare earth coordination. Condensation of the NiEr6 prisms leads to a three-dimensional network which leaves voids that are filled by regular Cd-4 tetrahedra. Er4NiCd shows Curie-Weiss behavior above 50 K with T-N=5.9 K. At field strength of 4 kOe a metamagnetic step is visible, together with the positive paramagnetic Curie-temperature (7.5 K) indicative for the rather unstable antiferromagnetic ground state. Therefore, a large reversible magnetocaloric effect (MCE) near the ordering temperature occurs and the values of the maximum magnetic-entropy change -Delta S-M(max) reach 18.3 J kg(-1) K-1 for the field change of 5 T with no obvious hysteresis loss around 17 K. The corresponding RCP of 595 J kg(-1) is relatively high as compared to other MCE materials in that temperature range. These results indicate that Er4NiCd could be a promising system for magnetic refrigeration at temperatures below liquid H-2. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3518556] (Less)
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
published
in
Applied Physics Reviews
volume
108
issue
11
article number
113919
publisher
American Institute of Physics (AIP)
external identifiers
  • wos:000285474100090
  • scopus:78751483486
ISSN
1931-9401
DOI
10.1063/1.3518556
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)
id
74331067-254c-432f-81b1-a0f41bfe6c91 (old id 1868074)
date added to LUP
2016-04-01 09:51:04
date last changed
2025-04-03 17:08:52
@article{74331067-254c-432f-81b1-a0f41bfe6c91,
  abstract     = {{Er4NiCd crystallizes with the Gd4RhIn type structure, space group F (4) over bar 3m, a=1333.3 pm. The nickel atoms have trigonal prismatic rare earth coordination. Condensation of the NiEr6 prisms leads to a three-dimensional network which leaves voids that are filled by regular Cd-4 tetrahedra. Er4NiCd shows Curie-Weiss behavior above 50 K with T-N=5.9 K. At field strength of 4 kOe a metamagnetic step is visible, together with the positive paramagnetic Curie-temperature (7.5 K) indicative for the rather unstable antiferromagnetic ground state. Therefore, a large reversible magnetocaloric effect (MCE) near the ordering temperature occurs and the values of the maximum magnetic-entropy change -Delta S-M(max) reach 18.3 J kg(-1) K-1 for the field change of 5 T with no obvious hysteresis loss around 17 K. The corresponding RCP of 595 J kg(-1) is relatively high as compared to other MCE materials in that temperature range. These results indicate that Er4NiCd could be a promising system for magnetic refrigeration at temperatures below liquid H-2. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3518556]}},
  author       = {{Hermes, Wilfried and Rodewald, Ute Ch. and Poettgen, Rainer}},
  issn         = {{1931-9401}},
  language     = {{eng}},
  number       = {{11}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{Applied Physics Reviews}},
  title        = {{Large reversible magnetocaloric effect due to a rather unstable antiferromagnetic ground state in Er4NiCd}},
  url          = {{http://dx.doi.org/10.1063/1.3518556}},
  doi          = {{10.1063/1.3518556}},
  volume       = {{108}},
  year         = {{2010}},
}