Heat capacity and magnetocaloric effect in manganites (La1−yEuy)0.7Pb0.3MnO3 (y:0.2; 0.6)

Карташев, А. В.; Flerov, I. N.; Волков, Н. В.; Sablina, K. A.

doi:10.1016/j.jmmm.2009.10.026

Cited by 9 publications

(2 citation statements)

References 15 publications

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“…The RCP has been defined as (3) Where, ΔS M is the maximum magnetic entropy change and ∂T FWHM is the full width at half maximum of the magnetic entropy change curve. The material with a larger RCP value usually represents a better magnetocaloric substance due to its high cooling efficiency.…”

Section: Resultsmentioning

confidence: 99%

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Large Magnetic Entropy Change in La_0.55Ce_0.2Ca_0.25MnO₃Perovskite

Anwar¹,

Kumar²,

Arshi³

et al. 2011

Journal of Magnetics

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In this paper, magnetic property and magnetocaloric effect (MCE) in perovskite manganites of the type La (0.75-X) Ce X Ca 0.25 MnO 3 (x = 0.0, 0.2, 0.3 and 0.5) synthesized by using the standard solid state reaction method have been reported. From the magnetic measurements as a function of temperature and applied magnetic field, we have observed that the Curie temperature (T C ) of the prepared samples strongly dependent on Ce content and was found to be 255, 213 and 150 K for x = 0.0, 0.2 and 0.3, respectively. A large magnetocaloric effect in vicinity of T C has been observed with a maximum magnetic entropy change (|ΔS M | max ) of 3.31 and 6.40 J/kgK at 1.5 and 4 T, respectively, for La 0.55 Ce 0.2 Ca 0.25 MnO 3 . In addition, relative cooling power (RCP) of the sample under the magnetic field variation of 1.5 T reaches 59 J/kg. These results suggest that La 0.55 Ce 0.2 Ca 0.25 MnO 3 compound could be a suitable candidate as working substance in magnetic refrigeration at 213 K.

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Section: Resultsmentioning

confidence: 99%

“…Recently, a series of doped lanthanum-manganese oxides have been the object of extensive research due to the exotic physics and possible potential spintronic applications [1][2][3]. More recently, an interesting property has been found in the ferromagnetic manganites near the Curie temperature, the magnetocaloric effect (MCE) [4,5].…”

Section: Introductionmentioning

confidence: 99%