Midya, A. ; Mandal, P. ; Das, S. ; Banerjee, S. ; Sharath Chandra, L. S. ; Ganesan, V. ; Roy Barman, S. (2010) Magnetocaloric effect in HoMnO3 crystal Applied Physics Letters, 96 (14). 142514_1-142514_3. ISSN 0003-6951
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Official URL: http://apl.aip.org/resource/1/applab/v96/i14/p1425...
Related URL: http://dx.doi.org/10.1063/1.3386541
Abstract
We have investigated the magnetic and magnetocaloric properties of HoMnO3 single crystal. HoMnO3 displays a series of complicated phase transitions due to the long range ordering of Mn3+ and Ho3+ moments. Field variation in magnetization generates a metamagnetic transition and produces an entropy change of 13.1 J/kgK at 7 T in the vicinity of antiferromagnetic ordering temperature of Ho3+. The values of adiabatic temperature change ( ~ 6.5 K) and relative cooling power ( ~ 320 J/kg) for a field change of 7 T are also appreciable to consider HoMnO3 as a magnetic refrigerant at low temperature.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Antiferromagnetic Materials; Entropy; Holmium Compounds; Magnetic Cooling; Metamagnetism; Refrigerants |
| ID Code: | 93090 |
| Deposited On: | 12 Jun 2012 08:13 |
| Last Modified: | 12 Jun 2012 08:13 |
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