| Autor: |
Abdouli, Khouloud, Cherif, W., Valent, M. A., Graça, M. P. F., Ktari, L., Messaoudi, O., Elgharbi, S., Elsofany, W. I. |
| Předmět: |
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| Zdroj: |
Journal of Materials Science: Materials in Electronics; Sep2021, Vol. 32 Issue 17, p22106-22118, 13p |
| Abstrakt: |
This paper reports the effect of chromium's substitution in magnetic oxides with perovskite structure La0.5Sm0.2Sr0.3Mn1-xCrxO3 (x = 0, 0.1, 0.15 and 0.2) compounds which have been produced with the glycine-nitrate process (GNP). The four compounds have an orthorhombic crystal structure with 'Pnma' space group. We note that they undergo a second-order paramagnetic-ferromagnetic (PM-FM) phase transition. Substitution manganese by chromium leads to a drop of the Curie temperature TC from 278 K (x = 0) to 205 K (x = 0.2). Their magnetocaloric effect has been evaluated by their magnetic entropy change - Δ S M max under a magnetic field change up to 5 T. All relative cooling power (RCP) suggests that these compounds are suitable candidates for magnetic refrigeration. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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