Grazing incidence X-ray scattering showing self-organized regular three-dimensional nanopillar-like structures

2014 ◽  
Vol 115 (11) ◽  
pp. 114303 ◽  
Author(s):  
Amitesh Paul ◽  
Neelima Paul
Keyword(s):  
Three Dimensional ◽  
Grazing Incidence ◽  
X Ray ◽  
Self Organized ◽  
X Ray Scattering ◽  
Ray Scattering

Superparamagnetic regular nanopillar-like structures studied by grazing-incidence X-ray scattering: effect of vertical correlation

2014 ◽  
Vol 47 (3) ◽  
pp. 1065-1076 ◽  
Author(s):  
Amitesh Paul ◽  
Neelima Paul ◽  
Peter Müller-Buschbaum ◽  
Andreas Bauer ◽  
Peter Böni
Keyword(s):  
Three Dimensional ◽  
Perpendicular Magnetic Anisotropy ◽  
Grazing Incidence ◽  
Magnetic Storage ◽  
X Ray ◽  
Storage Devices ◽  
X Ray Scattering ◽  
Magnetic Storage Devices ◽  
Vertical Correlation ◽  
Ray Scattering

Grazing-incidence small-angle X-ray scattering is reported from nanoclusters in superparamagnetic (SPM) polycrystalline Co separated by Au. The self-organization of the Co nanoclusters is in the form of nanopillar-like structures with high perpendicular magnetic anisotropy. A distinct signature of regular near-neighbour ordering is observed, which is commonly observed in patterned nanostructures. The estimated cluster sizes corroborate with those estimated from their magnetic field response. Most significantly, the SPM limit for these clusters can be raised to above room temperature (∼325 K) with an increase in the vertical correlation of the nanopillars. The slow response time of these uniform nanomagnetic grains (with respect to a 10 kHz AC field) suggests their possible usage as potential magnetic storage devices in the form of three-dimensional nanopillars.

Grazing-incidence transmission X-ray scattering: surface scattering in the Born approximation

2013 ◽  
Vol 46 (1) ◽  
pp. 165-172 ◽  
Author(s):  
Xinhui Lu ◽  
Kevin G. Yager ◽  
Danvers Johnston ◽  
Charles T. Black ◽  
Benjamin M. Ocko
Keyword(s):  
Born Approximation ◽  
Three Dimensional ◽  
Grazing Incidence ◽  
Real Space ◽  
X Ray ◽  
Electron Microscopies ◽  
Beam Geometry ◽  
X Ray Scattering ◽  
Complementary Techniques ◽  
Ray Scattering

Determination of the three-dimensional order in thin nanostructured films remains challenging. Real-space imaging methods, including electron microscopies and scanning-probe methods, have difficulty reconstructing the depth of a film and suffer from limited statistical sampling. X-ray and neutron scattering have emerged as powerful complementary techniques but have substantial data collection and analysis challenges. This article describes a new method, grazing-incidence transmission small-angle X-ray scattering, which allows for fast scattering measurements that are not burdened by the refraction and reflection effects that have to date plagued grazing-incidence X-ray scattering. In particular, by arranging a sample/beam geometry wherein the scattering exits through the edge of the substrate, it is possible to record scattering images that are well described by straightforward (Born approximation) scattering models.

scholarly journals Grazing-incidence small-angle X-ray scattering from Ge nanodots self-organized on Si(001) examined with soft X-rays

2013 ◽  
Vol 21 (1) ◽  
pp. 161-164 ◽  
Author(s):  
Takayoshi Yamamoto ◽  
Hiroshi Okuda ◽  
Kohki Takeshita ◽  
Noritaka Usami ◽  
Yoshinori Kitajima ◽  
...  
Keyword(s):  
Small Angle ◽  
Grazing Incidence ◽  
X Rays ◽  
X Ray ◽  
Self Organized ◽  
X Ray Scattering ◽  
Ewald Sphere ◽  
Intensity Calculation ◽  
Ray Scattering

Grazing-incidence small-angle X-ray scattering (GISAXS) measurements with soft X-rays have been applied to Ge nanodots capped with a Si layer. Spatially anisotropic distribution of nanodots resulted in strongly asymmetric GISAXS patterns in theqydirection in the soft X-ray region, which have not been observed with conventional hard X-rays. However, such apparent differences were explained by performing a GISAXS intensity calculation on the Ewald sphere,i.e.taking the curvature of Ewald sphere into account.

Grazing incidence small-angle x-ray scattering study of self-organized SiGe wires

2001 ◽  
Vol 63 (20) ◽  
Author(s):  
V. Holý ◽  
T. Roch ◽  
J. Stangl ◽  
A. Daniel ◽  
G. Bauer ◽  
...  
Keyword(s):  
Small Angle ◽  
Grazing Incidence ◽  
X Ray ◽  
Self Organized ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Ray Scattering

Self-organized ordering of Si1-xGexnanoscale islands studied by grazing incidence small-angle x-ray scattering

1999 ◽  
Vol 32 (10A) ◽  
pp. A230-A233 ◽  
Author(s):  
M Schmidbauer ◽  
Th Wiebach ◽  
H Raidt ◽  
M Hanke ◽  
R Köhler ◽  
...  
Keyword(s):  
Small Angle ◽  
Grazing Incidence ◽  
X Ray ◽  
Self Organized ◽  
X Ray Scattering ◽  
Ray Scattering

Co nanocrystals in amorphous multilayers – a structure study

2013 ◽  
Vol 46 (6) ◽  
pp. 1711-1721 ◽  
Author(s):  
Sigrid Bernstorff ◽  
Václav Holý ◽  
Jan Endres ◽  
Václav Valeš ◽  
Jaroslav Sobota ◽  
...  
Keyword(s):  
Metallic Nanoparticles ◽  
Three Dimensional ◽  
Grazing Incidence ◽  
Structure Study ◽  
Theoretical Description ◽  
Ion Scattering ◽  
X Ray ◽  
X Ray Scattering ◽  
Transmission Electron ◽  
Ray Scattering

The structure of magnetron-sputtered Co/SiO2multilayers has been investigated using grazing-incidence small-angle X-ray scattering, X-ray diffraction, transmission electron microscopy and ion scattering techniques. A theoretical description of diffuse X-ray scattering from three-dimensional self-assembled ensembles of nanoparticles is also presented. The data revealed that Co-rich nanoparticles self-organize in a three-dimensional lattice and a dependence of the lattice parameters as well as the mean particle size on the nominal layer thickness was observed. Originally amorphous Co-rich layers crystallize readily during deposition, creating both pure Co and Co oxide particles. The results presented are important for controlled production and reliable characterization of metallic nanoparticles in solid amorphous matrices, aiming to obtain a well ordered monodisperse ensemble of nanoparticles.

Using Three-Dimensional 3D Grazing-Incidence Small-Angle X-ray Scattering (GISAXS) Analysis To Probe Pore Deformation in Mesoporous Silica Films

2014 ◽  
Vol 6 (4) ◽  
pp. 2686-2691 ◽  
Author(s):  
Elvia Anabela Chavez Panduro ◽  
Håvard Granlund ◽  
Michael Sztucki ◽  
Oleg Konovalov ◽  
Dag W. Breiby ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Small Angle ◽  
Three Dimensional ◽  
Grazing Incidence ◽  
Silica Films ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering
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