| Autor: |
Neupane, Dipesh, Hulsebosch, Liam, Pathak, Arjun K., Mishra, Sanjay R. |
| Předmět: |
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| Zdroj: |
IEEE Transactions on Magnetics; Feb2022, Vol. 58 Issue 2, p1-8, 8p |
| Abstrakt: |
The influence of transition metal oxide (MO) on the structural, magnetic, and magnetocaloric properties for La0.45Nd0.25Sr0.3MnO3(LSMO)/ $x$ -wt.% MO (MO = CuO, CoO and NiO) nanocomposite samples has been investigated using X-ray powder diffraction (XRD) and magnetic measurements. Pure phase nanocomposites were prepared via the one-pot autocombustion method. The XRD patterns of the composite reveal the presence of a distinct pure phase of LSMO and MOs. Temperature-dependent field-cooled magnetization curve exhibits second-order phase transition near room temperature. The isothermal magnetic entropy change ($\Delta S_{M}$) is calculated from magnetic isotherms. LSMO—2.5 wt.% CuO composite—display $\Delta S_{M}\sim -3.95$ J/kg $\cdot \text{K}$ , highest among studied composites, which is 110% higher than LSMO. While the relative cooling power (RCP) values were observed to be maximum for 5 wt.% CoO composite. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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