Barocaloric and magnetocaloric effects in La(Fe0.89Si0.11)13

@article{Medeiros2008BarocaloricAM,
  title={Barocaloric and magnetocaloric effects in La(Fe0.89Si0.11)13},
  author={L{\'e}o G. Medeiros and Nilson de Oliveira and Amos Troper},
  journal={Journal of Applied Physics},
  year={2008},
  volume={103},
  pages={113909}
}
In this paper we calculate the barocaloric and the magnetocaloric effects under applied pressure in the compound La(Fe0.89Si0.11)13. We use a microscopical model in the framework of the band theory of magnetism, where the Coulomb interaction between itinerant electrons is treated in the mean field approach. Our theoretical calculations point out that both the barocaloric potentials [ΔS]B and [ΔTad]B at fixed magnetic field, and the magnetocaloric potentials ΔS and ΔTad under simultaneous… Expand

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References

SHOWING 1-10 OF 16 REFERENCES
Theoretical calculations of the magnetocaloric effect in MnFeP0.45As0.55 : a model of itinerant electrons
In this paper we calculate the magnetocaloric effect in the compound MnFeP0.45As0.55. We use a microscopical model in the picture of the band theory, including a magnetoelastic interaction. TheExpand
Pressure-induced colossal magnetocaloric effect in MnAs.
To present day, the maximum magnetocaloric effect (MCE) at room temperature for a magnetic field change of 5 T is 40 J/(kg K) for MnAs. In this Letter we present colossal MCE measurements on MnAsExpand
Pressure enhancement of the giant magnetocaloric effect in Tb5Si2Ge2.
TLDR
Evidence is presented that the high-tem temperature second-order ferromagnetic transition can be coupled with the low-temperature first- order structural phase change into a single first-order magnetic-crystallographic transformation at and above a tricritical point in the vicinity of 8.6 kbar. Expand
Magnetocaloric effect in transition metals based compounds: a theoretical approach
Abstract.In this paper we study the magnetocaloric effect in transition metals based compounds. For this purpose, we use a microscopical model, based on the band theory of magnetism, where theExpand
Pressure enhancement of the giant magnetocaloric effect in LaFe11.6Si1.4
The authors have studied the effects of pressure on the magnetocaloric effect in a polycrystalline LaFe11.6Si1.4 sample. The Curie temperature TC of the sample rapidly decreases from 191K at ambientExpand
Giant magnetocaloric effect of MnAs1-xSbx in the vicinity of first-order magnetic transition
Abstract The magnetocaloric effect (MCE) of Mn AS 1− x Sb x has been examined for 0⩽ x ⩽0.3. The magnetic entropy change caused by a magnetic field of Mn AS 1− x Sb x reaches 25–30 J/K kg, which isExpand
The magnetic and magnetocaloric properties of Gd5Ge2Si2 compound under hydrostatic pressure
The Gd5Ge2Si2 compound presents a giant magnetocaloric effect with transition temperature at around 276 K and is a very good candidate for application as an active regenerator material in roomExpand
Recent developments in magnetocaloric materials
The recent literature concerning the magnetocaloric effect (MCE) has been reviewed. The MCE properties have been compiled and correlations have been made comparing the behaviours of the differentExpand
Entropy change upon magnetic field and pressure variations
In this letter it is theoretically discussed the magnetocaloric effect under applied pressure and the barocaloric effect under applied magnetic field in compounds undergoing a first order magneticExpand
Effect of alloying on the giant magnetocaloric effect of Gd5(Si2Ge2)
Abstract A study of the effect of different alloying additions substituting for nonmagnetic Si and Ge on the giant magnetocaloric effect observed for the compound Gd5(Si2Ge2) revealed that smallExpand
...
1
2
...