Particle size distribution and composition in phase-separated Cu75Co25 alloys under various magnetic fields

  The size distribution and composition of Co-rich particles in phase-separated Cu75Co25 alloys under magnetic fields of up to 4 T were investigated. The results indicate that forced convective flow is suppressed effectively under a suitable magnetic field, whereas the thermoelectric magnetic convection under a high magnetic field cannot be neglected. The diffusive growth of Co-rich particle has a strong relation with the undercooling and a weak dependence on the magnetic field. The magnetic field does not alter the asynchronous crystallization behavior of Co-rich particles.