Roy, S. ; Das, M. ; Mandal, P. (2018) Large low-field magnetic refrigeration in ferromagnetic insulator EuTi0.9V0.1O3 Physical Review Materials, 2 (6). 064412. ISSN 2475-9953
Full text not available from this repository.
Official URL: http://doi.org/10.1103/PhysRevMaterials.2.064412
Related URL: http://dx.doi.org/10.1103/PhysRevMaterials.2.064412
Abstract
Magnetic properties and the magnetocaloric effect have been studied in a ferromagnetic compound EuTi0.9V0.1O3 by magnetization and heat capacity measurements. With the application of a magnetic field, the spin entropy is strongly suppressed and a large magnetic entropy change is observed near the Curie temperature TC=4.54K. The values of entropy change ΔSm, adiabatic temperature change, and magnetic cooling capacity are 41.4 J kg−1K−1, 17.4 K, and 577 J kg−1, respectively, for a field change of 0–7T. This compound also shows a large magnetocaloric effect at low magnetic fields. In particular, −ΔSm reaches as high as 11 and 20 Jkg−1K−1 for field changes of 0–1 and 0–2 T, respectively. These values of magnetocaloric parameters are significantly larger than that reported for several potential low-temperature magnetic refrigerants. The low-field large magnetocaloric effect, together with the absence of thermal and field hysteresis, makes the insulating EuTi0.9V0.1O3 compound a promising candidate for refrigeration below 30K.
Item Type: | Article |
---|---|
Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 122786 |
Deposited On: | 16 Aug 2021 09:27 |
Last Modified: | 16 Aug 2021 09:27 |
Repository Staff Only: item control page