Magnetic Transition of Metallic Phase‐Change Materials

The rarely studied magnetic transition in phase‐change materials (PCMs) is discussed. The Fe 48 Mo 14 Cr 15 C 15 B 6 Y 2 PCM with a novel magnetic transition is prepared. The experimental results indicate that the magnetic properties of the amorphous and crystalline phases of Fe 48 Mo 14 Cr 15 C 15 B 6 Y 2 are significantly different. The amorphous film exhibits a spin‐glass behavior due to a disordered atomic arrangement, while the crystalline film exhibits a ferromagnetic behavior owing to its long‐range ferromagnetic interaction. The findings provide important insights into magnetic PCMs, which can contribute to the rapid development and application of magnetic‐transition‐based devices.