Thermal stability and magnetic properties of partially Co-substituted (Fe71.2B24Y4.8)96Nb4 bulk metallic glasses

Stoica, M.; Kolesar, V.; Bednarčic, J.; Roth, S.; Franz, H.; Eckert, J.
March 2011
Journal of Applied Physics;Mar2011, Vol. 109 Issue 5, p054901
Academic Journal
The influence of partial replacement of Fe with Co in the quaternary (Fe71.2B24Y4.8)96Nb4 bulk metallic glasses on their structure, thermal stability and magnetic properties was studied. It was found that Co increases the thermal stability, as well as the Curie temperature, which monotonously increases as the Co content increases. The saturation magnetization shows a maximum of 1.01 μB per magnetic atom for x = 0.1, followed by a perfectly linear decrease for higher Co contents. The extension of the supercooled liquid region may reach even 98 K and the glass transition temperatures approach the theoretical value of 2/3 of the melting temperature. The mean field theory allows to calculate the magnetic exchange stiffness constant and to correlate its variation with the variation of the magnetic saturation.


Related Articles

  • High glass-forming ability correlated with fragility of Mg–Cu(Ag)–Gd alloys. Zheng, Qiang; Xu, Jian; Ma, Evan // Journal of Applied Physics;Dec2007, Vol. 102 Issue 11, p113519 

    We report bulk metallic glasses with critical diameter (Dc) in the 20–27 mm range over a relatively wide composition range in the Mg–Cu–Ag–Gd quaternary system. Such an extraordinary glass-forming ability is correlated with the relatively strong liquid behavior of...

  • Formation and compression mechanical properties of Ni-Zr-Nb-Pd bulk metallic glasses. Qiang, J. B.; Zhang, W.; Inoue, A. // Journal of Materials Research;Jul2008, Vol. 23 Issue 7, p9 

    The formation of bulk metallic glasses (BMGs) and their room temperature mechanical properties have been investigated in a serial of Ni65-xZr20Nb15Pdx (x = 0~15; at.%) quaternary alloys, which are hopefully hydrogen-permeation materials. The partial substitution of Ni with Pd in Ni65Zr20Nb15...

  • Structural and magnetic properties of Co2FeAl1-xSix. Balke, Benjamin; Fecher, Gerhard H.; Felser, Claudia // Applied Physics Letters;6/11/2007, Vol. 90 Issue 24, p242503 

    This work reports about the structural and magnetic properties of the quaternary Heusler alloy Co2FeAl1-xSix with varying Si concentration. The structure of the Co2FeAl1-xSix solid solution was investigated by means of x-ray diffraction and differential scanning calorimetry. It is found that the...

  • Study of quaternary Heusler alloy Co2CrAl1-xSix. Seema, K.; Kumar, Ranjan // AIP Conference Proceedings;Feb2013, Vol. 1512 Issue 1, p1154 

    The electronic structure of Co-based quaternary Heusler compounds Co2CrAl1-xSix (x=0.00, 0.25, 0.50, 0.75, 1.00) is calculated by first-principles density functional theory. The substitution of Al by Si leads to increase in the number of valence electrons which causes decrease in lattice...

  • Cu(In,Ga)Se films prepared by sputtering with a chalcopyrite Cu(In,Ga)Se quaternary alloy and In targets. Lin, Y.; Lin, Z.; Shen, C.; Wang, L.; Ha, C.; Peng, Chris // Journal of Materials Science: Materials in Electronics;Feb2012, Vol. 23 Issue 2, p493 

    This study reports the successful preparation of Cu(In,Ga)Se (CIGS) thin film solar cells by magnetron sputtering with a chalcopyrite CIGS quaternary alloy target. Bi-layer Mo films were deposited onto soda lime glass. A CIGS quaternary alloy target was used in combination with a stack indium...

  • First-principles Investigation of the Site Occupancy and Elastic Properties of Y in γ'-Co3 (Al,W). Qiang Yao; Yan Wang; Yuhong Zhu; Xiaolin Zhu // Materials Science Forum;2014, Vol. 788, p473 

    Site occupancy of Y in the γ'-Co3 (Al,W) was predicted theoretically by first-principles calculations based on density functional theory. By computing total energy as a function of applied strain, the elastic constants of quaternary Co3 (Al,W) were also predicted. The results suggest that Y...

  • Growth of high-quality GaxIn1-xAsyP1-y by chemical beam epitaxy. Tsang, W. T.; Schubert, E. F.; Chiu, T. H.; Cunningham, J. E.; Burkhardt, E. G.; Ditzenberger, J. A.; Agyekum, E. // Applied Physics Letters;9/7/1987, Vol. 51 Issue 10, p761 

    GaxIn1-xAsyP1-y epilayers closely lattice matched, Δa/a≲5×10-4, have been reproducibly grown over the whole range of composition (y=2.2x, 1>y>0) by chemical beam epitaxy. The relative sticking coefficient (or equivalently the incorporation efficiency into the solid) of arsenic to...

  • Raman scattering from AlGaInP. Kondow, Masahiko; Minagawa, Shigekazu; Satoh, Shin // Applied Physics Letters;12/14/1987, Vol. 51 Issue 24, p2001 

    Raman scattering spectra from AlGaInP quaternary alloys grown on GaAs substrates are measured. Dominant peaks observed are identified as AlP-, GaP-, and InP-like longitudinal optical modes. Mode frequency is seen to change almost linearly with aluminum composition, exhibiting the...

  • Long wavelength lattice dynamics for quaternary alloys: GaInPSb and AlGaAsSb. Jaw, D. H.; Stringfellow, G. B. // Journal of Applied Physics;11/1/1992, Vol. 72 Issue 9, p4265 

    Presents information on a study which investigated the long wavelength lattice dynamics of quaternary alloys. Theory of the random cell isodisplacement model; Secular equation developed; Results and discussion.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics