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252 results for “Doping”
A combined experimental and theoretical approach to the electronic and magnetic properties of Cu-doped LaMnO3 perovskites
<p>Collected data in Origin file format of magnetic and cw-EPR measurements of LaMnO3, La2CuO4 and Cu-doped LaMnO3. Temperature and magnetic field dependent magnetization measurements have been carried out on a Quantum Design Physical Properties Measurement System (PPMS). Room temperature continuous wave EPR (cw-EPR) measurements at X-band (9.86 GHz) frequencies have been conducted with a Bruker B-ER420 spectrometer upgraded with Bruker ECS 041XG microwave bridge and a lock-in amplifier (Bruker ER023M) using Bruker TE102 resonator applying a modulation amplitude of 5 G, a modulation frequency of 100 kHz and an attenuation of 20 dB for the microwave bridge. The samples have been measured in quartz tubes of 2.9 mm outer diameter with a filling height of approx. 9 mm containing approx. 7 mg to 20 mg of the powdered sample. All spectra are background-corrected taking an empty quartz tube as reference.</p>
Highly porous Co-doped NiO nanorods: Facile hydrothermal synthesis and electrocatalytic oxygen evolution properties
<p>Highly porous 3d transition metal oxide nanostructures are opening up the exciting area of oxygen evolution reaction (OER) catalysts in alkaline medium thanks to their good thermal and chemical stability, excellent physiochemical properties, high specific surface area and abundant nanopores. In this paper, highly porous Co-doped NiO nanorods were successfully synthesized by a simple hydrothermal method. The porous rod-like nanostructures were preserved with the added cobalt dopant ranging from 1 to 5 at% but were broken into aggregated nanoparticles at higher concentrations of additional cobalt. The catalytic activity of Co-doped NiO nanostructures for OER in an alkaline medium was assayed. The 5%Co-NiO sample showed a drastically enhanced activity. This result could originate from the combination of advantageous characteristics of highly porous NiO nanorods such as large surface area and high porosity as well as the important role of Co dopant that could provide more catalytic active sites, leading to an enhanced catalytic activity of the nanocatalyst.</p>
Combined temperature and potential induced defect steering for local doping control in Cu2ZnSnSe4
<p>Data of publication submitted to Materials Today: Physics "Combined temperature and potential induced defect steering for local doping control in Cu2ZnSnSe4". Processed data is included in .opju files.</p>
Data files for Peizhi Mai et al., "Robust charge-density wave correlations in the electron-doped single-band Hubbard model" (2023)
<p>Data files for "Robust charge-density wave correlations in the electron-doped single-band Hubbard model" by P. Mai, N. S. Nichols, S. Karakuzu, F. Bao, A Del Maestro, T. A. Maier, and Steven Johnston</p> <p>Preprint: https://arxiv.org/abs/2210.14930</p>
Data for Dynamic Nuclear Polarisation of 1H in Gd-Doped In(OH)3
<p>Supporting data for Dynamic Nuclear Polarisation of 1H in Gd-Doped In(OH)3</p> <p>Raw and processed 1H, 17O and 115In NMR and DNP-enhanced NMR, EPR, and XRD data for In(OH)3 and Gd-doped In(OH)3. </p> <p>This data is described in the associated publication www.doi.org/10.1016/j.jmr.2023.107509</p>
Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO3 Thin Films Studied by Emission Mössbauer Spectroscopy
<p>Experimental data of the following manuscript:</p> <p>Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO<sub>3</sub> Thin Films Studied by Emission Mössbauer Spectroscopy</p> <p>Heiniger-Schell, J.; Bharuth-Ram, K.; Naicker, K.; Masondo, V.; Dang, T.T.; Escobar, M.; Díaz-Guerra, C.; Marschick, G.; Masenda, H.; Gunnlaugsson, H.P.; et al. Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO3 Thin Films Studied by Emission Mössbauer Spectroscopy. Crystals 2023, 13, 724. https://doi.org/10.3390/ cryst13050724</p> <p> </p> <p>Abstract</p> <p>Emission <sup>57</sup>Fe Mössbauer spectroscopy (eMS), following the implantation of radioactive <sup>57</sup>Mn<sup>+</sup> ions, has been used to study the temperature dependence of the hyperfine magnetic field at Fe sites in Ba-doped BiFeO<sub>3</sub> (BFO) thin films. <sup>57</sup>Mn β decays (t<sub>1/2</sub> = 90 s) to the 14.4 keV Mössbauer state of <sup>57</sup>Fe, thus allowing online eMS measurements at a selection of sample temperatures during Mn implantation. The eMS measurements were performed on two thin film BFO samples, 88 nm and 300 nm thick, and doped to 15% with Ba ions. The samples were prepared by pulsed laser deposition on SrTiO<sub>3</sub> substrates. X-ray diffraction analyses of the samples showed that the films grew in a tetragonal distorted structure. The Mössbauer spectra of the two films, measured at absorber temperatures in the range 301 K–700 K, comprised a central pair of paramagnetic doublets and a magnetic sextet feature in the wings. The magnetic component was resolved into (i) a component attributed to hyperfine interactions at Fe<sup>3+</sup> ions located in octahedral sites (B<sub>hf</sub>); and (ii) to Fe<sup>3+</sup> ions in implantation induced lattice defects, which were characterized by a distribution of the magnetic field B<sub>Distr</sub>. The hyperfine magnetic field at the Fe probes in the octahedral site has a room temperature value of B<sub>hf</sub> = 44.5(9) T. At higher sample temperatures, the B<sub>hf</sub> becomes much weaker, with the Fe<sup>3+</sup> hyperfine magnetic contribution disappearing above 700 K. Simultaneous analysis of the Ba–BFO eMS spectra shows that the variation of the hyperfine field with temperature follows the Brillouin curve for <em>S</em> = 5/2.</p>
Momentum space imaging of ultra-thin electron liquids in δ-doped silicon
<p><strong>Dataset: </strong>SX-ARPES raw data, processed data and the codes used for analysing and data fitting our work at doi/10.1002/advs.202302101 are all available here. The theoretical mdelling is also avaiable.</p> <p><strong>Abstract: </strong>Two-dimensional dopant layers (δ-layers) in semiconductors provide the high-mobility electron liquids (2DELs) needed for nanoscale quantum-electronic devices. Key parameters such as carrier densities, effective masses, and confinement thicknesses for 2DELs have traditionally been extracted from quantum magnetotransport. In principle, the parameters are immediately readable from the one-electron spectral function that can be measured by angle-resolved photoemission (ARPES). Here, we measure buried 2DEL δ-layers in silicon with soft X-ray (SX) ARPES to obtain detailed information about their filled conduction bands and extract device-relevant properties. We take advantage of the larger probing depth and photon energy range of SX-ARPES relative to vacuum ultraviolet (VUV) ARPES to accurately measure the δ-layer electronic confinement. Our measurements are made on ambient-exposed samples and yield extremely thin (< 1 nm) and dense (~10<sup>14</sup> cm<sup>-2</sup>) 2DELs. Critically, we use this method to show that δ-layers of arsenic exhibit better electronic confinement than δ-layers of phosphorus fabricated under identical conditions.</p>
Study of the Wear of a Highly Cross-linked Polyethylene Acetabular Doped With Vitamin E and Coated With Titanium in Total Hip Replacement
ClinicalTrials.gov study NCT02524587. IPD Sharing: Not stated. Countries: 1. Publications: 1.
MEDiterranean Diet-driven Detoxification of OPioid Addicted patiEnts (MED-DOPE)
ClinicalTrials.gov study NCT07022782. IPD Sharing: YES. Countries: 1. Publications: 7.
Detection of Autologous DEHP (DiEthylHexyl Phthalate)-Free Blood Transfusion in Anti-doping
ClinicalTrials.gov study NCT02423135. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Using DNA-Typing and Erythrocyte Microparticle Analysis to Detect Blood Doping
ClinicalTrials.gov study NCT03548766. IPD Sharing: Not stated. Countries: 1. Publications: 15.
Comparative Evaluation of Calcium Silicate-doped Treated Dentin Matrix and Mineral Trioxide Aggregate as Miniature Pulpotomy Biomaterials in Deep Carious Lesions
ClinicalTrials.gov study NCT07302438. IPD Sharing: NO. Countries: 1. Publications: 1.
Risk of Positive Doping Tests Following Ingestion of Supplements Contaminated With Trace Quantities of Nandrolone Metabolites
ClinicalTrials.gov study NCT00682123. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Erbium-doped Yttrium Aluminium Garnet Laser(Er:Yag)Associated With Amorolfine Lacquer in the Treatment of Onychomycosis
ClinicalTrials.gov study NCT01528813. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Administration of Clomiphene: Short and Long Term Metabolism in an Anti-Doping Setting
ClinicalTrials.gov study NCT03028532. IPD Sharing: NO. Countries: 1. Publications: 10.
Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) Laser Treatment for Granular Corneal Dystrophy
ClinicalTrials.gov study NCT06202651. IPD Sharing: Not stated. Countries: 1. Publications: 13.
Diagnostic Relevance of Salivary Testosterone Concentrations in Doping Control.
ClinicalTrials.gov study NCT02134470. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Comparative study on photocatalytic activity of transition metals (Ag and Ni doped ZnO) nanomaterials synthesised via sol-gel method
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Preparation and performance of Al3+-doped BiVO4 semiconductor photocatalysts
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Highly porous Co-doped NiO nanorods: Facile hydrothermal synthesis and electrocatalytic oxygen evolution properties
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