Formation and magnetic properties of Co–Fe-based bulk metallic glasses with supercooled liquid region

• Published in: Journal of magnetism and magnetic materials Vol. 299; no. 2; pp. 492 - 495
• Main Authors: Sun, W.S., Liang, X.B., Kulik, T.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.2006; Elsevier Science
• Subjects: Amorphous and quasicrystalline magnetic materials; Bulk metallic glass; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; Glass transitions; Magnetic properties and materials; Physics; Soft magnetic properties; Specific phase transitions; Studies of specific magnetic materials; Supercooled liquid region; Soft magnetic properties; Bulk metallic glass; Supercooled liquid region; Differential scanning calorimetry; Magnetization; Crystallization; Ferromagnetic materials; Iron; XRD; Soft magnetic materials; Glass formation; Thermal stability; Casting; Metallic glasses; Coercive force; Magnetic properties
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2005.04.032

A new Co–Fe-based ferromagnetic bulk metallic glass (BMG) was synthesized by copper mould casting method. The thermal stability and crystallization processes were investigated by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). The soft magnetic behavior was studied by DC magnetic measurements. The high glass formation ability was interpreted in terms of the effective suppression of nucleation and growth of the intermetallic compounds which appear in the multicomponent system during solidification. The high thermal stability indicates that the new Co–Fe-based BMG could be used as high-temperature magnetic material. The low coercivity which was as low as 8 A/m for the as-cast sample was found in the Co–Fe-based metallic glass cylinder with a diameter of 1.5 mm.