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Special Issue on Advanced Nanomaterials and Nanotechnology (ICANN 2009); Edited by P. K. Giri, D. K. Goswami, A. Perumal and A. ChattopadhyayNo Access

ROLE OF MICROSTRUCTURE AND DOMAIN STRUCTURE ON THE SOFT MAGNETIC PROPERTIES OF MAGNETIC FIELD ANNEALED Fe89-xZr11Bx ALLOYS

    https://doi.org/10.1142/S0219581X11007971Cited by:0 (Source: Crossref)

    We report the evolution of microstructure, domain structure, and soft magnetic properties of amorphous and nanocrystalline Fe89-xZr11Bx(x = 0 - 10) alloys. High-resolution electron microscopy observations reveal that the annealed alloys exhibit a two-phase microstructure. Addition of B enhances the ferromagnetic properties of FeZr amorphous phase in the two-phase structured microstructure, resulting in good soft magnetic properties. Large-sized domains with smooth domain walls are observed in the alloys annealed below 873 K, which exhibit excellent magnetic softness. On the other hand, in the alloys annealed above 873 K, small-sized domains with irregular domain walls and domain wall pinning by FeZr compound are seen. The soft magnetic properties in FeZrB alloys not only depend on mean grain size, but also on the strength of the intergranular magnetic coupling and structural inhomogeneities.