Fabrication and characterization of Co{sub 40}Fe{sub 22}Ta{sub 8-x}Y{sub x}B{sub 30} (x = 0, 2.5, 4, 6, and 8) metallic glasses with high thermal stability and good soft magnetic properties

Journal Article · Fri Nov 14 04:00:00 EST 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4901266· OSTI ID:22402644

Shahabi, Hamed Shakur ^[1]; Bednarčik, Jozef ^[2]; Eckert, Jürgen ^[1]

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1. IFW Dresden, Institute for Complex Materials, Helmholtzstr. 20, 01069 Dresden (Germany)
2. Deutsches Elektronen-Synchrotron DESY, Photon Science, Notkestraße 85, 22603 Hamburg (Germany)

Atomic structure and thermal behavior of Co{sub 40}Fe{sub 22}Ta{sub 8-x}Y{sub x}B{sub 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.

• OSTI ID: 22402644
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 18 Vol. 116; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CALORIMETERS
CORRELATION FUNCTIONS
CURIE POINT
FABRICATION
LIQUIDS
MAGNETIC PROPERTIES
METALLIC GLASSES
STABILITY
STRUCTURE FACTORS
X-RAY DIFFRACTION