Hubert: Software for efficient analysis of in-situ nuclear forward scattering experiments

2016 ◽  
Author(s):  
Vlastimil Vrba ◽  
Vít Procházka ◽  
David Smrčka ◽  
Marcel Miglierini
Keyword(s):  
Forward Scattering ◽  
Nuclear Forward Scattering

scholarly journals On the Formation of Nanocrystalline Grains in Metallic Glasses by Means of In-Situ Nuclear Forward Scattering of Synchrotron Radiation

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 544 ◽  
Author(s):  
David Smrčka ◽  
Vít Procházka ◽  
Vlastimil Vrba ◽  
Marcel Miglierini
Keyword(s):  
Magnetic Field ◽  
Synchrotron Radiation ◽  
External Magnetic Field ◽  
Metallic Glasses ◽  
Hyperfine Interactions ◽  
Transformation Process ◽  
Forward Scattering ◽  
Point Of View ◽  
Nuclear Forward Scattering

Application of the so-called nuclear forward scattering (NFS) of synchrotron radiation is presented for the study of crystallization of metallic glasses. In this process, nanocrystalline alloys are formed. Using NFS, the transformation process can be directly observed during in-situ temperature experiments not only from the structural point of view, i.e., formation of nanocrystalline grains, but one can also observe evolution of the corresponding hyperfine interactions. In doing so, we have revealed the influence of external magnetic field on the crystallization process. The applied magnetic field is not only responsible for an increase of hyperfine magnetic fields within the newly formed nanograins but also the corresponding components in the NFS time spectra are better identified via occurrence of quantum beats with higher frequencies. In order to distinguish between these two effects, simulated and experimental NFS time spectra obtained during in-situ temperature measurements with and without external magnetic field are compared.

Observation of nuclear forward scattering fromKr83in bulk and monolayer films

1995 ◽  
Vol 51 (12) ◽  
pp. 7909-7911 ◽  
Author(s):  
D. E. Johnson ◽  
D. P. Siddons ◽  
J. Z. Larese ◽  
J. B. Hastings
Keyword(s):  
Forward Scattering ◽  
Nuclear Forward Scattering ◽  
Monolayer Films

Structural relaxation in a viscous liquid studied by quasielastic nuclear forward scattering

2002 ◽  
Vol 66 (18) ◽  
Author(s):  
I. Sergueev ◽  
H. Franz ◽  
T. Asthalter ◽  
W. Petry ◽  
U. van Bürck ◽  
...  
Keyword(s):  
Viscous Liquid ◽  
Structural Relaxation ◽  
Forward Scattering ◽  
Nuclear Forward Scattering

nuclear forward scattering of under high pressure

2007 ◽  
Vol 310 (2) ◽  
pp. 305-307
Author(s):  
Hisao Kobayashi ◽  
Yoshitaka Yoda ◽  
Makoto Shirakawa ◽  
Akira Ochiai
Keyword(s):  
High Pressure ◽  
Forward Scattering ◽  
Nuclear Forward Scattering

Identification of spatial magnetic inhomogeneities by nuclear forward scattering of synchrotron radiation

2019 ◽  
Vol 26 (4) ◽  
pp. 1310-1315
Author(s):  
Vlastimil Vrba ◽  
Vít Procházka ◽  
Marcel Miglierini
Keyword(s):  
Spatial Distribution ◽  
Magnetic Moments ◽  
Theoretical Description ◽  
Forward Scattering ◽  
Point Of View ◽  
Experimental Point ◽  
Nuclear Forward Scattering ◽  
Magnetic Inhomogeneities ◽  
Geometric Arrangements ◽  
Scattering Time

Spatially confined magnetic inhomogeneities were revealed by measuring nuclear forward scattering time spectra on the same sample in two different geometric arrangements. They differ by 180° rotation of the sample around one of the polarization axes. A basic theoretical description of this phenomenon and its relation to a spatial distribution of nuclei featuring different magnetic moments is provided. From an experimental point of view, the violation of rotational invariance was observed for an inhomogeneous Fe81Mo8Cu1B10 metallic glass. The development of magnetic inhomogeneities and their relation to the evolution of time spectra was studied during thermal annealing.

scholarly journals Evolution of structure and local magnetic fields during crystallization of HITPERM glassy alloys studied by in situ diffraction and nuclear forward scattering of synchrotron radiation

2015 ◽  
Vol 17 (42) ◽  
pp. 28239-28249 ◽  
Author(s):  
Marcel Miglierini ◽  
Márius Pavlovič ◽  
Vít Procházka ◽  
Tomáš Hatala ◽  
Gerhard Schumacher ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Metallic Glasses ◽  
Local Structure ◽  
Hyperfine Interactions ◽  
Nuclear Forward Scattering ◽  
Glassy Alloys ◽  
Evolution Of Structure ◽  
Local Magnetic Fields ◽  
In Situ Diffraction

In situ transformation of local structure and hyperfine interactions are simultaneously followed in real time during temperature annealing of metallic glasses.

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