Magnetic, magnetocaloric and thermoelectric properties of the intermetallic LaMn2Si2 compound: a theoretical study. (4th May 2022)

• Record Type: Journal Article
• Authors: Bazine, W.; Tahiri, N.; El Bounagui, O.; Ez-Zahraouy, H.
• Is Part Of: Phase transitions. Volume 95:Number 5(2022)
• Page Start: 387
• Page End: 397
• Publication Date: 2022-05-04
• Subjects: Magnetocaloric effect -- magnetic entropy change -- relative cooling power -- Monte Carlo simulations -- intermetallic LaMn2Si2 compound; Phase transformations (Statistical physics) -- Periodicals; 530.47405
• DOI: 10.1080/01411594.2022.2054808
• Languages: English
• ISSNs: 0141-1594

Abstract

ABSTRACT: The deficiency of materials with coexisting transport and magnetocaloric effect has prevented the development of intermetallic-based magnetic refrigeration applications. Therefore, intermetallic alloys are non-toxic, inexpensive, and low density. The presents work investigates the magnetic, magnetocaloric, and thermoelectric properties of the intermetallic LaMn2 Si2 compound by using the first-principles calculations and Monte Carlo simulations. From the Ab initio calculation, the exchange coupling and anisotropy interactions are calculated. Also, the magnetic and magnetocaloric properties are determined using Monte Carlo simulations. It is found that the intermetallic LaMn2 Si2 compound exhibits a second-order ferromagnetic-paramagnetic phase transition around TC ∼ 319 K, this value of temperature is in good agreement with the experimental value. Finally, the thermoelectric properties are discussed. Our results improve that this material is applicable for magnetic refrigeration at Curie temperature.