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http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3491| Title: | Effect of hydrostatic pressure on the magnetic, exchange bias and magnetocaloric properties of Ni45.5Co2Mn37.5Sn15 |
| Authors: | Arumugam, S. Ghosh, Subrata GHOSH, ARUP DEVARAJAN, U. Kannan, M. Govindaraj, L. Mandal, Kalyan Dept. of Physics |
| Keywords: | Magneto-structural transition Magnetocaloric effect Heusler alloys Exchange bias Hydrostatic pressure Metamagnetic transition 2017 |
| Issue Date: | Jul-2017 |
| Publisher: | Elsevier B.V. |
| Citation: | Journal of Alloys and Compounds, 725, 714-719. |
| Abstract: | In this study, we report the effect of hydrostatic pressure (P) and magnetic field (H) on the magnetization, magnetocaloric effect and exchange bias in a Ni45.5Co2Mn37.5Sn15 Heusler alloy. At ambient pressure, the martensitic transition temperature (TM) shifts to lower temperatures with a rate of dTM/dμ0H ∼ 3.29 K/T. On the other hand, TM increases rapidly to higher temperatures with dTM/dP ∼31.90 K/GPa when hydrostatic pressure is applied. The peak value of magnetic entropy change due to change in magnetic field of 5 T is found to decrease with increasing pressure. Although, the relative cooling power (RCP) increases from ∼189 Jkg-1 to ∼ 204 Jkg-1 during cooling cycle, a significant drop in net RCP is obtained from the measurements under heating cycle. The coercivity of the sample at a given temperature merely changes, but the exchange bias effect is improved by applying pressure. |
| URI: | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3491 https://doi.org/10.1016/j.jallcom.2017.04.127 |
| ISSN: | 0925-8388 1873-4669 |
| Appears in Collections: | JOURNAL ARTICLES |
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