Fabrication and Characterization of $Co_{40}Fe_{22}Ta_{8-x}Y_{x}B_{30}$ (x=0, 2.5, 4, 6, and 8) Metallic Glasses with High Thermal Stability and Good Soft Magnetic Properties

Taghvaei, Amir Hossein; Shahabi, Hamed Shakur; Eckert, Jürgen; Bednarčik, Jozef

doi:10.1063/1.4901266

Journal Article

PUBDB-2015-01113

Fabrication and Characterization of $Co_{40}Fe_{22}Ta_{8-x}Y_{x}B_{30}$ (x=0, 2.5, 4, 6, and 8) Metallic Glasses with High Thermal Stability and Good Soft Magnetic Properties

Taghvaei, A. H. (Corresponding Author) ; Shahabi, H. S. ; Bednarčik, J.DESY* ; Eckert, J.

2014
American Inst. of Physics Melville, NY

Journal of applied physics 116(18), 184904 (2014) [10.1063/1.4901266]

This record in other databases:

Please use a persistent id in citations: doi:10.1063/1.4901266

Abstract: Atomic structure and thermal behavior of $Co_{40}Fe_{22}$ Ta $_{8-x}Y_{x}B_{30}$ (x = 0, 2.5, 4, 6, and 8) metallic glasses with good soft magnetic properties have been investigated by high-energy synchrotron X-ray diffraction and differential scanning calorimeter, respectively. It has been shown that the extension of the supercooled liquid region first increases and reaches a large value of 95 K and subsequently decreases as a function of Y content. Analysis of the structure factors and pair correlation functions in the reciprocal-space and real-space have indicated that the addition of Y noticeably changes the atomic structure and reduces the degree of the medium-range order. Magnetic measurements have implied that the introduction of Y enhances both saturation magnetization and Curie temperatures of the ribbons, while keeping their coercivity very small. The underlying mechanisms for changes in the atomic structure, improving the thermal stability and magnetic properties upon Y addition have been discussed.

Classification: