Ultrasoft FeAlSiBCuNb nanocomposites for GMI sensor applications

Manh-Huong Phan; Hua-Xin Peng; Michael R. Wisnom; Seong-Cho Yu

doi:10.1117/12.598436

16 May 2005 Ultrasoft FeAlSiBCuNb nanocomposites for GMI sensor applications

Manh-Huong Phan, Hua-Xin Peng, Michael R. Wisnom, Seong-Cho Yu

Proceedings Volume 5763, Smart Structures and Materials 2005: Smart Electronics, MEMS, BioMEMS, and Nanotechnology; (2005) https://doi.org/10.1117/12.598436
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

Abstract

Fe_73-xAl_xSi₁₄B_8.5Cu₁Nb_3.5 (x = 0, 2) nanocomposite materials consisting of a nanocrystalline phase in an amorphous matrix were obtained by annealing their precursor amorphous ribbons, which were prepared by the melt-spinning technique, at different temperatures ranging between 350°C and 650°C for 45 min in vacuum. Investigation on their magnetic and magnetoimpedance properties indicates that the Al-containing sample (x = 2) possesses superior magnetic softness and giant magnetoimpedance (GMI) effect over the Al-free counterpart. This can be likely ascribed to the increased magnetic permeability, decreased coercive force and decreased resistivity. The increased magnetic permeability is resulted from a reduction in magnetocrystalline anisotropy and saturation magnetostriction. The correlations between magnetic softness, electrical properties and GMI behaviour is discussed in the light of the skin effect model. These results indicate that the Al-containing Fe-based nanocomposite material can be used for GMI sensor applications.

Citation Download Citation

Manh-Huong Phan, Hua-Xin Peng, Michael R. Wisnom, and Seong-Cho Yu "Ultrasoft FeAlSiBCuNb nanocomposites for GMI sensor applications", Proc. SPIE 5763, Smart Structures and Materials 2005: Smart Electronics, MEMS, BioMEMS, and Nanotechnology, (16 May 2005); https://doi.org/10.1117/12.598436

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