Observation of magnetocaloric effect in the LaMn1.9Fe 0.1Si2 compound at low fields in the vicinity of phase transition around room temperature

Nane, Onur; Ail, Hasan; Özkurt, Berdan; ÖZÇELİK, BEKİR; GENÇER, ALİ

doi:10.1088/1742-6596/153/1/012063

Observation of magnetocaloric effect in the LaMn1.9Fe 0.1Si2 compound at low fields in the vicinity of phase transition around room temperature

Atıf İçin Kopyala

Nane O., Ail H., Özkurt B., ÖZÇELİK B., GENÇER A.

Journal of Physics: Conference Series, cilt.153, 2009 (Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 153
Basım Tarihi: 2009
Doi Numarası: 10.1088/1742-6596/153/1/012063
Dergi Adı: Journal of Physics: Conference Series
Derginin Tarandığı İndeksler: Scopus, Aerospace Database, Compendex, INSPEC, zbMATH
Ankara Üniversitesi Adresli: Evet

Özet

Low field magnetic and magnetocaloric properties of the compound LaMn 1.9Fe0.1Si2 have been investigated. Using the M-H data measured at various temperatures, we have derived the magnetic entropy change |ΔS| as a function of temperature and magnetic field, by using the Maxwell relation. The temperature dependence of the Landau coefficient has been derived by fitting the magnetization, using the Landau expansion of magnetic free energy and Arrott plots. The results show that LaMn1.9Fe0.1Si2 is ferromagnetically ordered around room temperature (285 K) and the nature of the phase transition at this temperature is found to be second order. © 2009 IOP Publishing Ltd.