Magnetic Shape-Memory Heuslers Turn to Bio: Cytocompatibility of Ni-Mn-Ga Films and Biomedical Perspective

Magnetic shape-memory (MSM) Heuslers haveattracted great attention in recent years for both caloric andmagnetomechanical applications. Thanks to their multifunctionalproperties, they are also promising for a vast variety of biomedicalapplications. However, this topic has been rarely investigated sofar. In this communication, we present the first report on theabsence of cytotoxicity of MSM Heuslers in Ni-Mn-Ga epitaxialthin films and the perspective toward bioapplications. Qualitativeand quantitative biological characterizations reveal that Ni-Mn-Ga films can promote the adhesion and proliferation of humanfibroblasts without eliciting any cytotoxic effect. Additionally, our findings show that the morphology, composition, microstructure,phase transformation, and magnetic characteristics of the films are well preserved after the biological treatments, making the materiala promising candidate for further investigations.