Volume 80, Number 2, October 2007
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||13 September 2007|
Tunable magnetocaloric effect in RTiMoxGe (R= Tb, Er) (x=0, 0.15) compounds
Tata Institute of Fundamental Research - Mumbai 400-005, India
2 International Centre for Condensed Matter Physics - ICCMP, University of Brasilia - Brasilia, Brazil
Corresponding author: email@example.com
Accepted: 22 August 2007
The tetragonal layered compounds TbTiGe and ErTiGe order antiferromagnetically at 276 K and 39 K, respectively. Partial substitution of Mo for Ti in these two compounds modifies the magnetic interactions giving rise to a ferromagnetic ground state which results in an enhanced magnetocaloric effect. The magnetic entropy change in for a magnetic field change of 5 T is as against for ErTiGe in the vicinity of the magnetic transition. Thus, magnetocaloric properties of such layered materials may be tunable by suitable chemical substitutions.
PACS: 75.30.Sg – Magnetocaloric effect, magnetic cooling / 75.50.Cc – Other ferromagnetic metals and alloys / 75.47.-m – Magnetotransport phenomena; materials for magnetotransport
© Europhysics Letters Association, 2007
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