| Issue |
EPL
Volume 80, Number 2, October 2007
|
|
|---|---|---|
| Article Number | 27001 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/80/27001 | |
| Published online | 13 September 2007 | |
Tunable magnetocaloric effect in RTi
MoxGe (R= Tb, Er) (x=0, 0.15)
compounds
1
Tata Institute of Fundamental Research - Mumbai 400-005, India
2
International Centre for Condensed Matter Physics - ICCMP, University of Brasilia - Brasilia, Brazil
Corresponding author: skm@tifr.res.in
Received:
9
July
2007
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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