Reference : Structural, magnetic and magnetocaloric properties in Rare earth orthochromite (Sm, N...
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/224064
Structural, magnetic and magnetocaloric properties in Rare earth orthochromite (Sm, Ndand La)CrO3 for cooling product
English
Fkhar, Lahcen []
Mounkachi, Omar []
Hamedoun, Mohammed []
El kenz, Abdallah []
Benyoussef, Abdelilah []
Hlil, El Kebir []
Mahmoud, Abdelfattah mailto [Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT >]
Boschini, Frédéric mailto [Université de Liège - ULiège > > Plateforme APTIS >]
Ait Ali, Mustapha []
25-Apr-2018
No
No
International
2nd International Materials Science and Engineering for Green Energy Conference
du 25 avril au 27 avril 2018
Rabat
Maroc
[en] Rare-earth orthochromites ; , magnetic properties ; magnetocaloric effect ; cooling product
[en] Polycrystalline phase of SmCrO3, NdCrO3 and LaCrO3 orthochromites were synthetized with solid state reaction. The pure orthorhombic phases with space group Pnma (62) were been confirmed by X-Ray diffraction. In addition, the FTIR spectroscopy proved the formation Sm-O, Nd-O and La-O liaisons in SmCrO3, NdCrO3 and LaCrO3 respectively, and Cr-O and Cr-O-Cr liaisons in all our samples. The particles morphology and composition were seeing using the Scanning Electron Microscopy (SEM). The magnetic characterization was been performed by the Quantum Design XL-SQUID magnetometer in order to determine the magnetic transition type and transition temperature of each sample. We found that our samples exhibit a transition at 195 K, 65 K and 35 K for SmCrO3, NdCrO3 and LaCrO3 respectively. The magnetic entropy change (∆Sm) as the key parameter to evaluate the magnetocaloric effect is calculated. Our samples present a ∆Sm in the range of 0.11 and 0.25 J.kg-1.K-1 for an external magnetic field of 5 Tesla.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/224064

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