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Dataset results
16 results for “point defects”
Pushing the Study of Point Defects in Thin Film Ferrites to Low Temperatures Using In Situ Ellipsometry
<p>Dataset for article "Pushing the Study of Point Defects in Thin Film Ferrites to Low Temperatures Using In Situ Ellipsometry" published in <em>Adv. Mater. Interfaces</em> 2021, <strong>8</strong>, 2001881. </p> <p>The data includes:</p> <ul> <li>XRD data of La<sub>1-x</sub>Sr<sub>x</sub>FeO<sub>3</sub> thin films</li> <li>Optical conductivity of LSF films as a function of oxygen partial pressure and Sr content</li> <li>Concentration of electronic holes in LSF thin films as a function of oxygen partial pressure and temperature</li> <li>Defect chemistry models employed for describing the concentration of point defects in LSF thin films.</li> <li>Equilibrium constants for oxygen incorporation reactions in LSF thin films at different temperatures</li> <li>Ellipsometry raw data of LSF50 thin film as a function of equivalent oxygen pressure </li> <li>Electrochemical impedance spectra of the LSF50 thin film at 400 ºC</li> </ul>
Nanoscale mapping of point defect concentrations with 4D-STEM
<p>The following 4D-STEM data sets were collected on the ThemIS and TitanX scanning transmission electron microscopes located at the National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA. </p> <p>1• Au_thermal_beforeHT_17C.dm4, Au_thermal_HT_800C.dm4, Au_thermal_HT_1000C.dm4 and Au_thermal_afterHT_17C.dm4 are datasets from 4D-STEM measurements conducted <em>in situ</em> on an FEI ThemIS image corrected microscope at 300 kV during a thermal cycling experiment. These digital micrograph (.dm4) files were collected at 17 C before heat treatment, 800 C during heat treatment, 1000 C during heat treatment, and 17 C after heat treatment, respectively. Nano-diffraction data was collected using a Gatan K2-IS (2k x 2k) detector at 400 frames per second. Each dataset contains a set of electron diffraction patterns taken at each scan position with a ~ 1 nm probe step size. Approximately 80 x 80 scan positions were recorded from each region with a dwell time of 0.0025 seconds per frame. A custom 40µm patterned “bullseye” circular probe forming aperture was used to enhance the accuracy of 4D-STEM strain analysis by facilitating the identification of the center of diffraction discs. A convergence angle of 3.20 milli-radians, spot size of 8, and diffraction pixel size of 0.16 Å<sup>-1</sup> was used in micro-probe lens configuration. The data was machine and software binned to 512 x 512 pixels to increase the signal to noise ratio before computational analysis. Data processing were performed using strain mapping scripts provided in the open source py4DSTEM software package. Au_thermal_calibration.h5 contains the py4DSTEM calibration and diffraction standard data from the analysis. Polycrystalline Al standard sample was used to calibrate the reciprocal space pixel size as well as measure the elliptical distortion present in the data set.</p> <p>2• Al_irradiated.dm4 is a dataset from 4D-STEM measurement conducted <em>in situ </em>on an FEI TitanX microscope equipped to do high-angle STEM tomography and operating at 300 kV. Nano-diffraction data was acquired using a Gatan Orius 830 (2k x 2k) detector capable of collecting 30 frames per second. Each dataset contains a stack of convergent beam electron diffraction (CBED) patterns taken at each scan position with maximum resolution equivalent to 1.6 nm probe size. Approximately 50 x 50 frame scan regions were recorded with a dwell time of 0.01 seconds per frame. A custom 70 µm patterned “bullseye” circular C2 aperture was used to greatly enhance the accuracy of 4D-STEM strain analysis by facilitating the identification of the center of diffraction discs. A convergence angle of 2.7 milli-radians, spot size 10, and camera length 195 mm was used in micro-probe lens configuration. With a measured screen current of 300 pA in this configuration, the total sum of electrons incident in a region of the sample, commonly known as the fluence (total dose), was determined at 67,100 electronsÅ<sup>-2</sup> per 4D-STEM scan. The 4D-STEM data was machine and software binned to 512 x 512 pixels to increase the signal to noise ratio before computational analysis. Al_irradiated_calibration.h5 contains the py4DSTEM calibration and diffraction standard data from the analysis. Polycrystalline Al standard sample was used to calibrate the reciprocal space pixel size as well as measure the elliptical distortion present in the data set.</p>
Dataset from 'Topological interfaces crossed by defects and textures of continuous and discrete point group symmetries in spin-2 Bose-Einstein condensates'
<p>Dataset associated with the publication 'Topological interfaces crossed by defects and textures of continuous and discrete<br>point group symmetries in spin-2 Bose-Einstein condensates' in Physical Review Research. <br>Source data for Figures 3-8 in the manuscript.</p>
Radiation-induced point defects in KBr: CRYSTAL calculations
<p>Calculation results on vibrational properties of radiation-induced point defects in potassium bromide, calculated using CRYSTAL17 software.</p>
Point defects in InGaN/GaN QWs CL dataset
<p>Dataset of hyperspectral cathodoluminescence (CL) maps accompanying the following publication:</p> <ul> <li><a href="https://doi.org/10.1021/acs.nanolett.1c01295">T. F. K. Weatherley, W. Liu, V. Osokin, D. T. L. Alexander, R. A. Taylor, J.-F. Carlin, R. Butté, and N. Grandjean, “Imaging nonradiative point defects buried in quantum wells using cathodoluminescence”, Nano Letters 21, 5217-5224 (2021).</a></li> </ul> <p>Hyperspectral data is stored in the <a href="http://hyperspy.org/hyperspy-doc/current/user_guide/io.html#hspy-format">"hspy"</a> HyperSpy HDF5 specification, and can be loaded and analysed using Python (see <a href="http://hyperspy.org/hyperspy-doc/current/index.html">HyperSpy documentation</a>). Each hspy file contains comprehensive measurement metadata accessible in the "original_metadata" attribute in Python. See the README file for more detail.</p>
Exploring point defects and trap states in undoped SrTiO3 single crystals
<p>This dataset includes the raw data for the publication "Exploring point defects and trap states in undoped SrTiO3 single crystals" by Siebenhofer et. al, published in the Journal of the European Ceramic Society. The originlab file includes all raw data for the original figures presented in the main paper and the supporting information, organized in labelled folders containing tabelled data and the corresponding figure. </p>
Dataset for manuscript titled "Metal-like ductility and high hardness in nitrogen-rich HfN thin films by point defect superstructuring"
<p>Experimental data for support of claims in the paper. </p>
Source Data for Xiao et al., Topological Superfluid Defects with Discrete Point Group Symmetries , Nature Communications 13, 4635 (2022).
<p>Source data for Figures 2-5. Source data for Supplementary Figures S2-S5 available upon request to David Hall (dshall@amherst.edu).</p>
Bonding of gold nanoclusters on graphene with and without point defects
<p>Theoretical data set for the Nanomaterials paper "Bonding of gold nanoclusters on graphene with and without point defects".</p> <p>Data structure and formats are described in the README.docx file.</p>
Supplementary Data for "Li+ Diffusion in Crystalline Lithium Silicides: Influence of Intrinsic Point Defects"
Open the record for dataset details and reuse information.
A Point Mutation in the RNA Recognition Motif of CSTF2 Associated with Intellectual Disability in Humans Causes Defects in 3′ End Processing [3'prime-seq]
GEO Series GSE152975. Mus musculus. 8 samples. Type: Other.
A Point Mutation in the RNA Recognition Motif of CSTF2 Associated with Intellectual Disability in Humans Causes Defects in 3′ End Processing [RNA-seq]
GEO Series GSE152976. Mus musculus. 8 samples. Type: Expression profiling by high throughput sequencing.
Correction of splicing defect in compound heterozygous FRDA patient carrying FXN 165+5G>C point mutation.
GEO Series GSE262763. Homo sapiens. 1 samples. Type: Expression profiling by high throughput sequencing.
Subcellular transcriptome alterations in a cell culture model of spinal muscular atrophy point to widespread defects in axonal growth and presynaptic differentiation
GEO Series GSE59506. Mus musculus. 18 samples. Type: Expression profiling by array.
A Point Mutation in the RNA Recognition Motif of CSTF2 Associated with Intellectual Disability in Humans Causes Defects in 3′ End Processing
GEO Series GSE152977. Mus musculus. 16 samples. Type: Other; Expression profiling by high throughput sequencing.
Optimizing off-axis fields for two-axis magnetometry with point defects
<p>Dataset for manuscript in Applied Physics Letters</p>
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