Impacts of highly charged ions as seeds in a magneto-structural phase transition of magnetocaloric thin films

29th International Conference on Photonic, Electronic, and Atomic Collisions

Cervera, S.^1 ; Trassinelli, M.^1 ; Marangolo, M.^1 ; Bernard-Carlsson, L.^1 ; Eddrief, M.^1 ; Etgens, V.H.^1 ; Gafton, V.^1 ; Hidki, S.^1 ; Lacaze, E.^1 ; Lamour, E.^1 ; Prigent, C.^1 ; Rozet, J.-P.^1 ; Steydli, S.^1 ; Zheng, Y.^1 ; Vernhet, D.^1

CNRS, UMR 7588, Institut des NanoSciences de Paris (INSP), 4 Place Jussieu, 75005 Paris, France Sorbonne Universités, UPMC Univ. Paris 06, INSP, UMR 7588, F-75005 Paris, France^1

关键词: Controlled conditions;    First order;    Highly charged ions;    Magnetocaloric;    Slow highly charged ions;    Structural and magnetic properties;    Structural phase transition;    Thermal hysteresis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/3/032021/pdf
DOI  :  10.1088/1742-6596/635/3/032021

来源: IOP

【 摘 要 】

Investigation on modifications of structural and magnetic properties of magnetocaloric thin films induced by slow highly charged ions bombardment under well-controlled conditions is presented. The ions induce defects/constraints that facilitate nucleation of one phase with respect to the other in the first-order magnetostructural MnAs, with a consequent suppression of thermal hysteresis, but without any significant perturbation on the other structural and magnetic properties.