Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 322, Issue 24, Pages 3882-3888Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2010.08.013
Keywords
Magnetocaloric; Gadolinium; Magnetic refrigeration
Funding
- Programme Commission on Energy and Environment (EnMi) [2104-06-0032]
Ask authors/readers for more resources
The magnetocaloric properties of three samples of LaFe13-x-yCoxSiy have been measured and compared to measurements of commercial grade Gd. The samples have( x=0.86, y=1.08), ( x=0.94, y=1.01) and ( x=0.97, y=1.07) yielding Curie temperatures in the range 276-288K. The magnetization, specific heat capacity and adiabatic temperature change have been measured over abroad temperature interval. Importantly, all measurements were corrected for demagnetization, allowing the data to be directly compared. In an internal field of 1 T the maximum specific entropy changes were 6.2, 5.1 and 5.0J/kg K, the specific heat capacities were 910,840 and 835 J/kg K and the adiabatic temperature changes were 2.3, 2.1 and 2.1 K for the three LaFeCoSi samples respectively. For Gd in an internal field of 1 T the maximum specific entropy change was 3.1 J/kg K, the specific heat capacity was 340 J/kg K and the adiabatic temperature change was 3.3 K. The adiabatic temperature change was also calculated from the measured values of the specific heat capacity and specific magnetization and compared to the directly measured values. In general an excellent agreement was seen. (C) 2010 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available