Relevant bibliographies by topics / Transmission Kikuchi Diffraction

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Transmission Kikuchi Diffraction'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Transmission Kikuchi Diffraction"

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Nolze, Gert, Tomasz Tokarski, Łukasz Rychłowski, Grzegorz Cios, and Aimo Winkelmann. "Crystallographic analysis of the lattice metric (CALM) from single electron backscatter diffraction or transmission Kikuchi diffraction patterns." Journal of Applied Crystallography 54, no. 3 (May 28, 2021): 1012–22. http://dx.doi.org/10.1107/s1600576721004210.

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A new software is presented for the determination of crystal lattice parameters from the positions and widths of Kikuchi bands in a diffraction pattern. Starting with a single wide-angle Kikuchi pattern of arbitrary resolution and unknown phase, the traces of all visibly diffracting lattice planes are manually derived from four initial Kikuchi band traces via an intuitive graphical user interface. A single Kikuchi bandwidth is then used as reference to scale all reciprocal lattice point distances. Kikuchi band detection, via a filtered Funk transformation, and simultaneous display of the band intensity profile helps users to select band positions and widths. Bandwidths are calculated using the first derivative of the band profiles as excess-deficiency effects have minimal influence. From the reciprocal lattice, the metrics of possible Bravais lattice types are derived for all crystal systems. The measured lattice parameters achieve a precision of <1%, even for good quality Kikuchi diffraction patterns of 400 × 300 pixels. This band-edge detection approach has been validated on several hundred experimental diffraction patterns from phases of different symmetries and random orientations. It produces a systematic lattice parameter offset of up to ±4%, which appears to scale with the mean atomic number or the backscatter coefficient.
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Brodu, Etienne, and Emmanuel Bouzy. "A New and Unexpected Spatial Relationship Between Interaction Volume and Diffraction Pattern in Electron Microscopy in Transmission." Microscopy and Microanalysis 24, no. 6 (December 2018): 634–46. http://dx.doi.org/10.1017/s1431927618015441.

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AbstractThe finding of this study is that the interaction volume in electron microscopy in transmission is well ordered laterally, with a remarkable and unexpected consequence being that lateral subsections of the interaction volume produce subsections of the Kikuchi diffraction pattern. It makes the microstructure of samples directly visible in Kikuchi patterns. This is first illustrated with polycrystalline Ti–10Al–25Nb with an on-axis transmission Kikuchi diffraction set-up in a scanning electron microscope. It is then shown via a Monte Carlo simulation and a large-angle convergent-beam electron diffraction experiment that this phenomenon finds its origin in the nature of the differential elastic and quasi-elastic cross sections. This phenomenon is then quantified by a careful image analysis of Kikuchi patterns recorded across a vertical interface in a silicon sample specifically designed and fabricated. A Monte Carlo simulation reproducing all the geometric parameters is conducted. Experiments and simulations match very well qualitatively, but with a slight quantitativity gap. The specificity of the thermal diffuse scattering cross-section, not available in the simulation, is thought to be responsible for this gap. Beside Kikuchi diffraction, the case of diffraction spots and diffuse background present in the pattern is also discussed.
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Vespucci, S., A. Winkelmann, K. Mingard, D. Maneuski, V. O'Shea, and C. Trager-Cowan. "Exploring transmission Kikuchi diffraction using a Timepix detector." Journal of Instrumentation 12, no. 02 (February 27, 2017): C02075. http://dx.doi.org/10.1088/1748-0221/12/02/c02075.

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Fanta, Alice Bastos, Matteo Todeschini, Andrew Burrows, Henri Jansen, Christian D. Damsgaard, Hossein Alimadadi, and Jakob B. Wagner. "Elevated temperature transmission Kikuchi diffraction in the SEM." Materials Characterization 139 (May 2018): 452–62. http://dx.doi.org/10.1016/j.matchar.2018.03.026.

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Pascal, Elena, Saransh Singh, Ben Hourahine, Carol Trager-Cowan, and Marc De Graef. "Dynamical Simulations of Transmission Kikuchi Diffraction (TKD) Patterns." Microscopy and Microanalysis 23, S1 (July 2017): 540–41. http://dx.doi.org/10.1017/s1431927617003385.

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Brodu, Etienne, Emmanuel Bouzy, Jean Jacques Fundenberger, Benoit Beausir, Lydia Laffont, and Jacques Lacaze. "Crystallography of Growth Blocks in Spheroidal Graphite." Materials Science Forum 925 (June 2018): 54–61. http://dx.doi.org/10.4028/www.scientific.net/msf.925.54.

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A better understanding of spheroidal graphite growth is expected in a near future thanks to widespread use of transmission electron microscopy. However, common transmission electron microscopy is quite time consuming and new indexing techniques are being developed, among them is transmission Kikuchi diffraction in a scanning electron microscope, a recent technique derived from electron backscatter diffraction. In the present work, on-axis transmission Kikuchi diffraction in scanning electron microscope, completed by transmission electron microscopy, was used with the objective of producing new observations on the microstructure of spheroidal graphite. This study shows that disorientations between blocks and sectors in spheroidal graphite are quite large in the early growth stage, which may be indicative of a competition process selecting the best orientations for achieving radial growth along thecdirection of graphite.
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Geiss, Roy H., Katherine P. Rice, and Robert R. Keller. "Transmission EBSD in the Scanning Electron Microscope." Microscopy Today 21, no. 3 (May 2013): 16–20. http://dx.doi.org/10.1017/s1551929513000503.

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We demonstrate in this article an exciting new method for obtaining electron Kikuchi diffraction patterns in transmission from thin specimens in a scanning electron microscope (SEM) fitted with a conventional electron backscattered diffraction (EBSD) detector. We have labeled the method transmission EBSD (t-EBSD) because it uses off-the-shelf commercial EBSD equipment to capture the diffraction patterns and also to differentiate it from transmission Kikuchi diffraction available in the transmission electron microscope (TEM). Lateral spatial resolution of less than 10 nm has been demonstrated for particles and better than 5 nm for orientation mapping of thin films. The only new requirement is a specimen holder that allows the transmitted electrons diffracted from an electron transparent sample to intersect the EBSD detector. We briefly outline our development of the technique, followed by descriptions of sample preparation techniques and operating conditions. We then present examples of t-EBSD patterns from a variety of specimens, including particles of diameter <10 nm, wires of diameter <80 nm, and films with thicknesses from ~5 nm to 300 nm. Finally, we discuss the phenomenon in the context of Monte Carlo electron scattering simulations.
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Weiland, H., and D. P. Field. "Automatic analysis of Kikuchi diffraction patterns." Proceedings, annual meeting, Electron Microscopy Society of America 52 (1994): 900–901. http://dx.doi.org/10.1017/s0424820100172231.

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Recent advances in the automatic indexing of backscatter Kikuchi diffraction patterns on the scanning electron microscope (SEM) has resulted in the development of a new type of microscopy. The ability to obtain statistically relevant information on the spatial distribution of crystallite orientations is giving rise to new insight into polycrystalline microstructures and their relation to materials properties. A limitation of the technique in the SEM is that the spatial resolution of the measurement is restricted by the relatively large size of the electron beam in relation to various microstructural features. Typically the spatial resolution in the SEM is limited to about half a micron or greater. Heavily worked structures exhibit microstructural features much finer than this and require resolution on the order of nanometers for accurate characterization. Transmission electron microscope (TEM) techniques offer sufficient resolution to investigate heavily worked crystalline materials.Crystal lattice orientation determination from Kikuchi diffraction patterns in the TEM (Figure 1) requires knowledge of the relative positions of at least three non-parallel Kikuchi line pairs in relation to the crystallite and the electron beam.
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Fundenberger, J. J., E. Bouzy, D. Goran, J. Guyon, A. Morawiec, and H. Yuan. "Transmission Kikuchi Diffraction (TKD)via a horizontally positioned detector." Microscopy and Microanalysis 21, S3 (August 2015): 1101–2. http://dx.doi.org/10.1017/s1431927615006297.

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Fancher, Chris M., Matthew J. Burch, Srikanth Patala, and Elizabeth C. Dickey. "Implications of gnomonic distortion on electron backscatter diffraction and transmission Kikuchi diffraction." Journal of Microscopy 285, no. 2 (January 4, 2022): 85–94. http://dx.doi.org/10.1111/jmi.13077.

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Dissertations / Theses on the topic "Transmission Kikuchi Diffraction"

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Tryblom, Axel. "Optimizing Transmission Kikuchi Diffraction for Analysing Grain Size and Orientation of Nanocrystalline Coatings." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-266442.

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In order to increase efficiency and lifetime of cutting tools it is typical to apply thin coatings by physical or chemical vapour deposition. Applying coatings on cutting tools has shown an increase in both efficiency and lifetime and are of large interest in further development. The study of coatings and their mechanical properties is a very active research area and produces tools extensively used in the industry.  The behaviour of materials on a macroscopic scale can typically be related to microscopic properties. Some coatings produced by Chemical Vapour Deposition (CVD) but especially Physical Vapour deposition (PVD) have crystal structures which are difficult to analyse by conventional methods due to crystal sizes in the nanometre scale. For nanocrystalline materials standard methods fall short due to a limited resolution of the methods.  Recently a method for electron diffraction of crystalline samples was suggested to be used differently in order to achieve a higher resolution. Unlike earlier when electrons were reflected from the sample, using Electron Backscattering Diffraction (EBSD), the electrons were transmitted through thin samples with thicknesses in the magnitude of 100 nm, which enabled the crystal structure to be determined. The new method is typically referred to as either Transmission Kikuchi Diffraction (TKD) or transmission EBSD (t-EBSD) with a resolution down to approximately 10 nm.  The goal with this master thesis has been to evaluate sample preparation methods and TKD studies on PVD samples. Each step has been divided into parameters which govern the sample preparation and analysis and optimized accordingly in order to achieve best possible results of the crystal structure of PVD coatings. From this it has been possible to show how TKD is optimally performed and which difficulties and limitations that are present.  In this thesis two coatings, TiN and (Ti,Al)N, have been studied with TKD and two different preparation methods have been attempted. These were precision mechanical polishing and in-situ lift out with a Dual Beam System. Mechanical polishing did not succeed in producing samples for TKD but was not ruled out as a possibility while the in-situ lift out method could both produce samples and achieve a crystallographic indexing around 80 %. The only areas which were difficult to index were crystal boundaries and crystal clusters where individual crystals were in the range of <30 nm. In these areas overlapping Kikuchi patterns were observed due to the resolution limit of TKD.
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Samudrala, Saritha Kowmudy. "Atomic scale analysis of nanocrystalline materials by advanced microscopy." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/13655.

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In this thesis, relatively new and advanced microscopy techniques are used to overcome many challenging problems in characterisation of nanocrystalline (nc-) materials. They include grain boundaries’ orientation and misorientation evaluation by transmission Kikuchi diffraction (TKD) and atomic scale analysis of segregation at grain boundaries by atom probe microscopy (APM). For each of these techniques, systematic investigations were carried out to optimise specimen preparation methods, data acquisition and analysis parameters. This resulted in fundamental knowledge that could be adopted to study a wide range of nc- materials. Two different sets of nc- materials are considered in this work: (i) bulk engineering materials (duplex stainless steels (DSS)) processed by high pressure torsion (HPT); and (ii) novel binary thin film systems including Al-O, Ni-P and Cu synthesized by direct current (DC) - magnetron sputtering and electron beam evaporation methods. In DSS samples, TKD work with the support of high resolution transmission electron microscopy has shown deformation twinning in body centred cubic ferrite phase, which is a significant experimental finding in contrast to the abundant theoretical modelling work in literature. Further, ferrite-ferrite grain boundaries and ferrite-austenite interphase boundaries are captured in APM experiments for studying segregation of alloying elements. This provided a way to calculate interfacial excess of segregating elements such as Mo, P, B, and W. Even in Al-O thin films, solute excess of O atoms and O rich clusters at grain boundaries is directly evidenced by APM and quantified by advanced computational methods. APM data also showed that O and P additions in Al-O and Ni-P led to a reduction in grain size of the as-deposited films. AP results facilitated and led to the studies of grain boundary pinning effect on stress coupled grain boundary mediated deformation mechanisms in these films.
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Eizadjou, Mehdi. "Design of Advanced High Strength Steels." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/17315.

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A new advanced high strength steels (AHSS) is designed based on Fe-C-Mn-Al composition. Martensitic steel is processed in intercritical region to achieve an ultrafine-grained duplex γ–(α + α') microstructure. The focus was on tuning the degree of austenite plasticity via controlling its stability, called austenite engineering. Interest in austenite engineering stems from transformation-induced plasticity (TRIP) effect, which is known to enhance ductility. The thermodynamic and kinetic analyses were used to optimize the annealing condition. The evolution of microstructure and mechanical properties was studied using different techniques. Due to high heating rate, the austenite reversion occurred before recrystallization of the ferrite. The final microstructure was duplex steel with globular-shaped grains. High volume fraction of the austenite phase was obtained (f_γ>40%) in very short time annealing. By increasing annealing temperature and time, austenite fraction and grain size increased. However, due to dilution of the austenite from stabilizers elements, the stability of the austenite dropped and transformed into martensite during quenching. This led in variety of austenite stabilities that resulted in different combination of mechanical properties. The critical factors influencing the onset of TRIP effect is studied and it was found that both early and delayed onset of the TRIP effect will lead to worse ductility. Hence, to achieve ultrahigh strength and excellent ductility, austenite stability shall be controlled to precisely trigger out TRIP. This study find out that discontinuous yielding or Lüders bands phenomenon can be used in ultrafine duplex steels to improve ductility. The results showed that superb combination of strength (σ_YS>1.0GPa and σ_UTS>1.4GPa) and ductility (ε_t≥20%) could be achieved in short time annealing of less than 10 minutes. This work evidence that tuning the austenite to a marginal stability enables us to design strong and ductile steels.
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Hu, Jing. "High resolution characterisation of corrosion and hydrogen pickup of Zr-Nb cladding alloys." Thesis, University of Oxford, 2016. http://ora.ox.ac.uk/objects/uuid:a986c6e5-bba4-48c2-8e30-7f77ebe5313e.

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Zr cladding alloys have been used for many years as the first safety barrier layer of a nuclear reactor. However, the recent Fukushima accidents and industrial demands to increase the burnup of fuels have led to increasing interest in a detailed mechanistic understanding of aqueous corrosion and hydrogen pickup and the performance at high temperatures. As part of an international MUZIC-2 programme (Mechanistic Understanding of Zr Corrosion and Hydrogen pickup), I have used a range of advanced microscopy techniques to study the microstructure, the nanoscale chemistry and the porosity in a series of zirconium alloys at different stages of corrosion and hydrogen pickup. Samples from both autoclave and in-reactor conditions were available to compare, I have focussed on RXA (recrystallised 580°C) Zr-1.0Nb and annealed (720°C) Zr-1.0Nb alloys. A set of samples from different exposures times were chosen to represent early, pre-transition and post-transition samples in order to compare the microstructure and microchemistry of the oxides, the metal-oxide interface and the metal. (Scanning) Transmission Electron Microscopy ((S)TEM), Transmission Kikuchi Diffraction (TKD) and automated crystal orientation mapping with TEM (ASTAR mapping) were used to study the grain structure and phase distribution. Significant differences in grain morphology were observed between samples oxidised in the autoclave with different corrosion rates, with more uneven metal-oxide interface, more parallel cracks and less organised oxide grains in the fast corroding samples. Comparing with autoclave samples, the in-reactor samples have shorter, less well-aligned monoclinic grains and more tetragonal grains. The rapidly oxidising annealed Zr-1.0Nb alloy also have much higher tetragonal grain fraction comparing with the slow corrosion rate RXA Zr-1.0Nb alloys. Porosity in the oxide is predicted to have a major influence on the overall rate of corrosion and hydrogen pickup, and there is much more porosity in the annealed Zr-1.0Nb alloy than found in either the RXA alloy or the similar alloy exposed to neutron irradiation. A combination of Energy Dispersion X-ray (EDX) mapping in STEM and Electron Energy Loss Spectroscopy (EELS) analysis of second phase particles can reveal the main and the minor element distributions respectively. The annealed Zr-1.0Nb alloys have Î2-Zr SPPs with nano crystalline structure and much larger size. Although they does not relate with the higher density of cracks in the oxide, the large SPP size can connect together all the small cracks that are generated by the huge amount of tetragonal to monoclinic phase transformation during corrosion and provides pathway for corrosion and hydrogen pickup. Two kinds of SPPs are found in the RXA Zr-1.0Nb alloys, one is Î2-Nb and another one is Zr-Nb-Fe Laves phase. Neutron irradiation seems to have little effect on promoting fast oxidation or dissolution of Î2-Nb precipitates, but encourages dissolution of Fe from Laves phase precipitates. Electron Energy Loss Spectroscopy (EELS) analysis of the oxidation state of Nb in Î2-Nb SPPs in the oxide revealed the fully oxidised Nb5+ state in the SPPs deep into the oxide, but Nb2+ in the crystalline SPPs near the metal-oxide interface. EELS, TKD and ASTAR mapping have also revealed the presence of suboxide layers with the hexagonal ZrO structure predicted by ab initio modelling. The combined thickness of the ZrO suboxide and oxygen-saturated layers at the metal-oxide interface correlates well to the estimated instantaneous oxidation rate, suggesting that the presence of this oxygen- rich zone combining with the part where porosity is not interconnected is the protective oxide that is rate limiting in the key in the transport processes involved in corrosion and hydrogen pickup.
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Tort, Morgan. "The effects of severe plastic deformation on an age hardenable Al-2.5Cu-1.5Mg alloy." Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22578.

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Les effets du pressage à canaux égaux (ECAP), un procédé de déformation plastique sévère, ont été examinés dans un alliage Al-2.5Cu-1.5Mg (pourcentage en masse) prône à être durci par traitement thermique et précipitant dans la région α + S. Une multitude de techniques microscopiques, calorimétriques et analytiques ont été utilisés pour caractériser et quantifier les microstructures, incluant la diffraction Kikuchi, la microscopie électronique en transmission, la calorimétrie différentielle à balayage et la sonde atomique tomographique. Quatre différents traitements thermiques initiaux ont été réalisés pour créer quatre microstructures différentes, contenant soit aucun précipités, des clusters Cu-Mg ou/et des composés intermétalliques Al2CuMg. Chaque spécimen a été soumis au procédé ECAP à température ambiante et les effets correspondants sur la microstructure et les propriétés mécaniques ont été analysés. Des expériences en compression pour de petite déformation (inférieures à 7%) ont aussi été entreprises sur les échantillons trempés pour étudier les effets de la compression sur la formation des clusters. Après la trempe et la compression, des clusters Cu-Mg ont été trouvés dans la matrice et il a été élucidé que la formation des clusters était déclenchée par la compression. La fraction volumique des clusters est corrélée directement par la déformation appliquée : plus la déformation est importante, plus la fraction volumique des clusters est importante. Après ECAP, la microstructure est constituée de longues bandes nanocristallines séparée par de gros grains non-déformés pour les échantillons contenant seulement des clusters avant la déformation, tandis que la présence de phase S, avant ECAP, conduit à des microstructures constituées de zones à gros grains et de zones à grains raffinés, distribués d’une façon homogène à travers les échantillons. Bien que les spécimens présentaient clairement des microstructures différentes après ECAP, impliquant que différents mécanismes de renforcement entre en jeux, la limite élastique se situait au-delà de 500 MPa. La limite élastique des échantillons fabriqués par ECAP a été modélisée en superposant les différents mécanismes de renforcement et en saisissant les paramètres microstructurels venant de la caractérisation dans le modèle. Il a été démontré qu’une très bonne corrélation existait entre les limites élastiques provenant du modèle et celles expérimentales
The effects of equal channel angular pressing (ECAP), a severe plastic deformation (SPD) technique, were investigated in an age hardenable Al-2.5Cu-1.5Mg (weight percent (wt.%)) alloy precipitating in the α + S phase field. A variety of microscopy, calorimetry and analytical techniques were employed to characterize and quantify the microstructure, including transmission kikuchi diffraction (TKD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC) and atom probe tomography (APT). Four different initial heat-treatments were conducted to achieve four different microstructures, containing either no precipitates, Cu-Mg clusters or/and Al2CuMg intermetallics. Each specimen was subjected to ECAP at room temperature and the related effects on the microstructure and mechanical properties were analysed. Compression experiments for small strains (less than 7%) were also undertaken on the as-quenched samples to investigate the effects of compression on the formation of clusters.After quenching and compression, Cu-Mg clusters were found in the matrix and it was elucidated that the formation of clusters was triggered by pressing. The volume fraction of clusters was found to be correlated to the strain applied: the higher the strain, the higher the volume fraction.After ECAP, the microstructure was constituted of long nanocrystalline bands separated by large undeformed grains for the samples containing only clusters before deformation, while the presence of S phase, prior to ECAP, lead to microstructures constituted of both coarse and refined zones distributed homogeneously throughout the sample. Although the samples presented clearly different microstructures after ECAP, implying that different strengthening mechanisms were active, the yield strength was found to lie above 500 MPa. The yield strength of the ECAP processed samples was modelled by superposing the different strengthening mechanisms altogether and by inputting the microstructural parameters coming from characterisation in the model. It was demonstrated that a very good correlation existed between the modelled and experimental yield strength values
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Lee, Genevieve W. "Advanced Characterization of Solid-State Dissimilar Material Joints." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492794418438023.

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Book chapters on the topic "Transmission Kikuchi Diffraction"

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Williams, David B., and C. Barry Carter. "Kikuchi Diffraction." In Transmission Electron Microscopy, 311–22. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-76501-3_19.

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Williams, David B., and C. Barry Carter. "Kikuchi Diffraction." In Transmission Electron Microscopy, 289–99. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-2519-3_19.

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Champness, P. E. "Finding your way around reciprocal space: Kikuchi diffraction." In Electron Diffraction in the Transmission Electron Microscope, 69–79. Garland Science, 2020. http://dx.doi.org/10.1201/9781003076872-6.

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Krishnan, Kannan M. "Diffraction of Electrons and Neutrons." In Principles of Materials Characterization and Metrology, 481–551. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198830252.003.0008.

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Electron scattering, significantly stronger than that for X-rays, is sensitive to surfaces and small volumes of materials. Low-energy electron diffraction (LEED) provides information on surface reconstruction and the arrangement of adsorbed atoms. Reflection high energy electron diffraction (RHEED) probes surface crystallography, and monitors, in situ, mechanisms of thin film growth. Transmission electron diffraction reveals a planar cross-section of the reciprocal lattice, where intensities are products of the structure and lattice amplitude factors determined by the overall shape of the specimen. The amplitude of any diffracted beam at the exit surface oscillates with thickness (fringes) and the excitation error (bend contours). Selected area diffraction produce spot or ring patterns, where low-index zone-axis orientations reflect the symmetry of the crystal, and double-diffraction shows positive intensities even for reflections forbidden by extinction rules. Kikuchi lines appear as pairs of dark and bright lines, and help in tilting the specimen. A focused probe produces convergent beam electron diffraction (CBED), useful for symmetry analysis at nanoscale resolution. Neutrons interact with the nucleus and the magnetic moment of the atom via the spin of the neutron; the latter finds particular use in studies of magnetic order. The atomic scattering factor for neutrons shows negligible angular dependence.
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Conference papers on the topic "Transmission Kikuchi Diffraction"

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Bhatia, Vijay. "In-situ Heating and Biasing Transmission Kikuchi Diffraction." In European Microscopy Congress 2020. Royal Microscopical Society, 2021. http://dx.doi.org/10.22443/rms.emc2020.269.

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Fanta, Alice. "Challenges and perspectives of Transmission Kikuchi Diffraction in the SEM." In European Microscopy Congress 2020. Royal Microscopical Society, 2021. http://dx.doi.org/10.22443/rms.emc2020.1124.

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Jacobson, Bryce T., Dmitriy Gavryushkin, Mark Harrison, and Kaley Woods. "Angularly sensitive detector for transmission Kikuchi diffraction in a scanning electron microscope." In SPIE OPTO, edited by Michael R. Douglass, Philip S. King, and Benjamin L. Lee. SPIE, 2015. http://dx.doi.org/10.1117/12.2083520.

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Nowakowski, Pawel. "Transmission Kikuchi diffraction, a powerful technique for nanoscale materials characterization, and the influence of specimen preparation." In European Microscopy Congress 2020. Royal Microscopical Society, 2021. http://dx.doi.org/10.22443/rms.emc2020.914.

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Goran, Daniel, Thomas Schwager, and Alice Bastos DaSilva Fanta. "Recent Developments for the Characterization of Crystals and Defects at the Nanoscale using On-Axis TKD in SEM." In ISTFA 2021. ASM International, 2021. http://dx.doi.org/10.31399/asm.cp.istfa2021p0217.

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Abstract In this paper, we describe the technique of on-axis transmission Kikuchi diffraction (TKD) in a scanning electron microscope and demonstrate its use in characterizing nanoscale crystal structures and defects in semiconductor materials and devices. We explain how we modified hardware and software to achieve an effective spatial resolution of 2 nm during orientation mapping without decreasing acquisition speed, indexing quality, and other performance parameters. The paper includes illustrations comparing sample-detector geometries for conventional EBSD, TKD, and on-axis TKD. It also presents examples of the types of images that can be obtained using on-axis TKD, including raw crystal orientation maps, diffraction patterns, pattern quality maps, time-resolved orientation maps showing microstructure evolution, and a sparse sample map showing the distribution of quantum dots on an electron transparent support film.
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Yu, P., N. Fan, S. Yin, and R. Lupoi. "Systematic Research on the Formation of Heterogenous Microstructure in FeCoNiCrMn High Entropy Cold Spray." In ITSC2022. DVS Media GmbH, 2022. http://dx.doi.org/10.31399/asm.cp.itsc2022p0815.

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Abstract High entropy alloys, as a novel alloy system, demonstrated excellent mechanical performance. However, despite its excellent mechanical performance, the strength-ductility trade-off effect still limit its performance. In recent decades, it has been found that heterogenous or gradient microstructure can efficiently solve the conflict. Cold spray is a promising method to create heterogenous microstructure with high efficiency and low cost. In this work, equiatomic FeCoNiCrMn HEA was deposited by cold spray and the microstructure was systematically investigated by transmission electron microscopy (TEM) and transmission Kikuchi diffraction (TKD). In cold spray, a gradient microstructure was formed and segregated Ni and Mn in starting particle were also redistributed. Moreover, twinning in ultra-fine nanograins were detected in the region close to the impact interface. Compared with severe deformation of other low SFE metals, for FeCoNiCrMn HEA, twinning in nanograins also highly related to the grain size.
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Ernould, Clément. "A novel High-angular Resolution “on-axis” Transmission Kikuchi Diffraction (HR-TKD) technique for the fine characterization of deformed nanostructures in the SEM." In European Microscopy Congress 2020. Royal Microscopical Society, 2021. http://dx.doi.org/10.22443/rms.emc2020.230.

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