Strain Engineering of the Magnetocaloric Effect in MnAs Epilayers - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2008

Strain Engineering of the Magnetocaloric Effect in MnAs Epilayers

Résumé

By using heteroepitaxy on two different GaAs templates, we have investigated the impact of anisotropic strain on the magnetocaloric effect (MCE) of MnAs. The temperature range, spread around room temperature, and the maximal MCE position are markedly different in the two epitaxial systems. Simulated MCE curves, obtained from a model based on the mean-field approximation, are in good agreement with the experimental data, indicating that the entropy variation is magnetic in origin. These results illustrate how strain can be used to tune the MCE in materials with coupled structural and magnetic phase transition and suggest that the MCE of MnAs may find applications in microelectronic circuitry.
Fichier non déposé

Dates et versions

hal-00343684 , version 1 (02-12-2008)

Identifiants

Citer

D.H. Mosca, F. Vidal, Victor H. Etgens. Strain Engineering of the Magnetocaloric Effect in MnAs Epilayers. Physical Review Letters, 2008, 101, pp.125503. ⟨10.1103/PhysRevLett.101.125503⟩. ⟨hal-00343684⟩
45 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More