scholarly journals Application of GISAXS in the Investigation of Three-Dimensional Lattices of Nanostructures

Crystals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 479 ◽  
Author(s):  
Lovro Basioli ◽  
Krešimir Salamon ◽  
Marija Tkalčević ◽  
Igor Mekterović ◽  
Sigrid Bernstorff ◽  
...  
Keyword(s):  
Ion Beam ◽  
Three Dimensional ◽  
Simulated Data ◽  
Theoretical Models ◽  
Grazing Incidence ◽  
Material Structure ◽  
Suitable Model ◽  
X Ray Scattering ◽  
Ion Beam Treatment ◽  
Ordered Nanostructures

The application of the grazing-incidence small-angle X-ray scattering (GISAXS) technique for the investigation of three-dimensional lattices of nanostructures is demonstrated. A successful analysis of three-dimensionally ordered nanostructures requires applying a suitable model for the description of the nanostructure ordering. Otherwise, it is possible to get a good agreement between the experimental and the simulated data, but the parameters obtained by fitting may be completely incorrect. In this paper, we theoretically examine systems having different types of nanostructure ordering, and we show how the choice of the correct model for the description of ordering influences the analysis results. Several theoretical models are compared in order to show how to use GISAXS in the investigation of self-assembled arrays of nanoparticles, and also in arrays of nanostructures obtained by ion-beam treatment of thin films or surfaces. All models are supported by experimental data, and the possibilities and limitations of GISAXS for the determination of material structure are discussed.

The formation and characterization of three-dimensional gold nanocrystal superlattices

2007 ◽  
Vol 222 (11/2007) ◽  
Author(s):  
Michael G. Constantinides ◽  
Heinrich M. Jaeger ◽  
Xuefa Li ◽  
Jin Wang ◽  
Xiao-Min Lin
Keyword(s):  
Thermal Stability ◽  
Three Dimensional ◽  
Grazing Incidence ◽  
Gold Nanocrystals ◽  
X Ray ◽  
X Ray Scattering ◽  
Drop Drying ◽  
Nanocrystal Superlattices ◽  
Gold Nanocrystal

Highly-ordered, three-dimensional superlattices were self-assembled from dodecanethiol-ligated gold nanocrystals using a simple drop-drying technique. The superlattices had the shape of truncated pyramids (frustums) and reached lateral dimensions of several micrometers. The formation and thermal stability were studied by grazing-incidence small-angle x-ray scattering. We found that the superlattice frustums adopt a

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.

Grazing incidence small-angle x-ray scattering applied to the characterization of nanocomposite thin films

2001 ◽  
Vol 678 ◽  
Author(s):  
David Babonneau ◽  
Amelia Suárez-García ◽  
José Gonzalo ◽  
Ivan R. Videnovic ◽  
Michael G. Garnier ◽  
...  
Keyword(s):  
Thin Films ◽  
Small Angle ◽  
Metallic Nanoparticles ◽  
Ion Beam ◽  
Grazing Incidence ◽  
Ion Beam Sputtering ◽  
X Ray ◽  
X Ray Scattering ◽  
Nanocomposite Thin Films ◽  
Ray Scattering

AbstractGrazing incidence small-angle x-ray scattering (GISAXS) allows to investigate precisely the microstructure of nanocomposite thin films containing metal nanocrystals produced using different synthesis techniques. We present results on the size, size distribution, shape, and correlation length of metallic nanoparticles embedded in different matrices fabricated by sequential pulsed laser deposition, magnetron sputtering, and ion-beam sputtering co-deposition. The morphology of the nanoparticles is discussed in terms of the different growth process that takes place in each case.

Ion beam synthesis of buried Zn-VI quantum dots in SiO2– grazing incidence small-angle X-ray scattering studies

2003 ◽  
Vol 36 (3) ◽  
pp. 439-442 ◽  
Author(s):  
I.D. Desnica-Frankovic ◽  
U.V. Desnica ◽  
P. Dubček ◽  
M. Buljan ◽  
S. Bernstorff ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Small Angle ◽  
Ion Beam ◽  
Grazing Incidence ◽  
X Ray ◽  
X Ray Scattering ◽  
Ion Beam Synthesis ◽  
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.

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