Amorphous metallic alloys

Luborsky, F. E.

doi:10.1016/b978-0-408-11030-3.50006-6

Cited by 512 publications

(256 citation statements)

References 21 publications

(8 reference statements)

Supporting

Mentioning

217

Contrasting

Unclassified

Order By: Relevance

“…35,36 The measured values were in close agreement with those reported in the literature. 5,33,37 20 ] did not present a significant macroscopic magnetostriction, as expected. 5 The DiffEXAFS experiment was carried out using the energy dispersive XAS spectrometer of the European Synchrotron Radiation Facility (ESRF), on ID24.…”

Section: Methodssupporting

confidence: 76%

Determination of the magnetostrictive atomic environments in FeCoB alloys

et al. 2012

View full text Add to dashboard Cite

The atomic environments of Fe and Co involved in the magnetostriction effect in FeCoB alloys have been identified by differential extended x-ray fine structure (DiffEXAFS) spectroscopy. The study, done in amorphous and polycrystalline FeCoB films, demonstrates that the alloys are heterogeneous and that boron plays a crucial role in the origin of their magnetostrictive properties. The analysis of DiffEXAFS in the polycrystalline and amorphous alloys indicates that boron activates magnetostriction when entering as an impurity into octahedral interstitial sites of the Fe bcc lattice, causing its tetragonal distortion. Magnetostriction would be explained then by the relative change in volume when the tetragonal axis of the site is reoriented under an externally applied magnetic field. The experiment demonstrates the extreme sensitivity of DiffEXAFS to characterize magnetostrictive environments that are undetectable in their related EXAFS spectra.

show abstract

Section: Methodssupporting

confidence: 76%

Determination of the magnetostrictive atomic environments in FeCoB alloys

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Although significant progress has been made and provided insights into the atomic-level structure and short-to-mediumrange order in glasses [3][4][5][6][7][8][9][10][11][12][13][14] , the way of leading to the mediumrange order is still unclear [5][6][7][8][9][10] . Does a universal rule exist that nature follows to construct a glass structure as what has been discovered for crystals?…”

mentioning

confidence: 99%

mentioning

confidence: 99%

“…The amorphous nature of glassy solids is experimentally ascertained by X-ray diffraction, transmission electron microscopy or selected area electron diffraction 14 . Almost all kinds of glassy solids exhibit similar mazelike selected area electron diffraction pattern without any local lattice fringes and broad diffraction maxima characteristic in X-ray diffraction data 14 . However, the glassy solids are inherently different in atomic-level structures, demonstrated by their different response behaviours under certain conditions, for example, the diverse annealing-precipitated crystallinephases [23][24][25] , the distinct mechanical strength and ductility [26][27][28][29][30][31] , and the different thermal stability against crystallization [32][33][34] .…”

mentioning

confidence: 99%

See 1 more Smart Citation

Hidden topological order and its correlation with glass-forming ability in metallic glasses

Wang

et al. 2015

Nat Commun

116

View full text Add to dashboard Cite

Unlike the well-defined long-range periodic order that characterizes crystals, so far the inherent atomic packing mode in glassy solids remains mysterious. Based on molecular dynamics simulations, here we find medium-range atomic packing orders in metallic glasses, which are hidden in the diffraction data in terms of structure factors or pair correlation functions. The analysis of the hidden orders in various metallic glasses indicates that the glassy and crystalline solids share a nontrivial structural homology in short-to-medium range, and the hidden orders are formulated by inheriting partial crystalline orders during glass formation. As the number of chemical components increases, more hidden orders are often developed in a metallic glass and entangled topologically. We use this phenomenon to explain the geometric frustration in glass formation and the glass-forming ability of metallic alloys.

show abstract

“…This phenomenon can be interpreted from the relaxation effects due to local structural rearrangements. 14,15 The atomic radius of B is far smaller than Co, therefore it is easy to get into atom gaps in the stacking structure of amorphous alloys. As a result, the atoms rearrangement can easily occur, the relaxation susceptibility is decreased which reduces the relaxation H c .…”

Section: Resultsmentioning

confidence: 99%

Effect of magnetic field annealing on soft magnetic properties of Co71Fe2Si14-xB9+xMn4 amorphous alloys with low permeability

Fan

Zhang

et al. 2017

AIP Advances

View full text Add to dashboard Cite

The effect of transverse magnetic field annealing (TFA) on soft magnetic properties of Co71Fe2Si14-xB9+xMn4 amorphous alloys was investigated with the aim of reducing effective permeability (μe). It was revealed that the increasing B content improved thermal stability, increased saturation magnetic flux density (Bs) of as-quenched alloys, while the samples exhibited a slightly larger coercivity (Hc) when the atom percentages of Si and B were similar. Permeability decreased dramatically after TFA. The decrease of permeability mainly depended on annealing temperature and magnetic field intensity. Besides, flat hysteresis loops were obtained after TFA, Lorentz micrograph observation revealed the TFA sample exhibited denser magnetic domain walls, which confirmed it was more difficult to be saturated. The Co71Fe2Si9B14Mn4 alloy was successful prepared with low μe of 3020, low Hc of 1.7 A/m and high resistance to DC bias 6 times that of as-quenched alloy at the DC field of 300 A/m.

show abstract

Amorphous metallic alloys

Cited by 512 publications

References 21 publications

Determination of the magnetostrictive atomic environments in FeCoB alloys

Determination of the magnetostrictive atomic environments in FeCoB alloys

Hidden topological order and its correlation with glass-forming ability in metallic glasses

Effect of magnetic field annealing on soft magnetic properties of Co71Fe2Si14-xB9+xMn4 amorphous alloys with low permeability

Contact Info

Product

Resources

About