Abstract
Site-specific nano-crystallization in an amorphous soft magnetic Fe–Si–B alloy was induced via laser processing on a magnetic substrate. The microstructure evolution was characterized using site-specific transmission electron microscopy, and the results are rationalized by diffusion-based calculations. A clear variation in grain-size and spatial distribution is observed at the center region compared with edge regions of the laser track. Additionally, the nano-crystalline phase exhibits a crystallographic texture at the edge region, whereas a random texture is obtained at the center of the laser track. The evolution of structure, size, and morphology of grains are explained by the influence of magnetic field-enhanced thermal effect on nucleation rate during crystallization.
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Acknowledgments
The authors acknowledge the financial support from National Science Foundation (NSF-CMMI 0969249). The authors acknowledge Center for Advanced Research and Technology (CART) at the University of North Texas for access to microscopy facilities.
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Katakam, S., Dahotre, N. Laser patterning of Fe–Si–B amorphous ribbons in magnetic field. Appl. Phys. A 117, 1241–1247 (2014). https://doi.org/10.1007/s00339-014-8512-2
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DOI: https://doi.org/10.1007/s00339-014-8512-2