|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIV
||The Effect of Phase Transformation on the Magnetocaloric Effect in Co-based Heusler Alloys
||A-Young Lee, SongYi Kim, Hye Ryeong Oh, Hyun-ah Kim, Young Do Kim, MinHa Lee
|On-Site Speaker (Planned)
The eco-friendly magnetic refrigerator as replacing conventional vapor compression refrigerator is based on magnetocaloric effect. The measurement methods of magnetocaloric effect are adiabatic temperature change or isothermal magnetic entropy change. In initial study, typical magnetocaloric alloys have been using crystalline materials. The alloys with the amorphous structure have many advantages such as high refrigeration capacity, broadened magnetic entropy change, better corrosion resistance, and mechanical properties for enhance endurance. Co-based magnetocaloric alloys have been considered as a novel room temperature magnetocaloric material system. In this study, we investigated the differences of the magnetic properties and magnetocaloric behaviors of Co-based amorphous alloys and crystalline alloys, respectively. The magnetocaloric properties of Co-based alloys were measured by a Quantum Design Physical Properties Measurement System (VSM, VersaLab). The structure of alloys was characterized by X-ray diffractometer (XRD, Bruker, D8 discover) using Cu Kα radiation.
||Planned: Supplemental Proceedings volume