2 edition of X-ray characterisation of YBCO found in the catalog.
X-ray characterisation of YBCO
Thesis (Ph.D) - University of Birmingham, School of Metallurgy and Materials, 1993.
|Statement||by Michael Rand.|
Despite its large lattice mismatch with YBCO (of ~9% ), single-crystal magnesium oxide (MgO) is a popular substrate for the growth of high quality YBa 2 Cu 3 O x (YBCO) thin films due to its low dielectric loss, its thermal expansion coefficient being similar to that of YBCO, and low films were grown on MgO substrates for fabricating step-edge junction superconducting quantum. X-ray diffraction texture analysis provides information about preferential film growth and can be used for optimization of deposition parameters and prediction of properties of thin films. An x-ray back reflection technique using the Braga-Brentano geometry with experimental corrections for absorption and defocusing was used to study thin.
More powerful characterization tools have arisen in many areas including all forms of scanning probe microscopes, more powerful x-ray sources, a completely new generation of electron microscopes, improved ways of using neutrons and neutron polarization, and far more robust computing power for modeling and simulation. YBCO The intensity vs. angle is shown. In order to identify the compound we found all of the peak positions and made a table of peak position and intensity as a function of angel. Using Braggs Law we can obtain the plane separation (d). YBCO X-Ray Diffraction Pattern Braggs Law 2 d sin (θ) = n λ For Cu λ= Å (1 A= m).
FABRICATION OF YBCO THIN FILMS BY temperature superconducting YBCO thin films and their characterization. In this study, the electrical and structural studies performed on laser deposited YBCO films have shown that films produced by PLD. The thin films were characterized in detail by X-Ray Spectroscopy (EDX) method was used to identify File Size: 2MB. Rex "X-Ray" Washburn is a camper at Camp Green Lake. He is portrayed by Brendan Jefferson in the film Rex was arrested and sent to Camp Green Lake for selling bags of dried parsley and oregano for$50 each to people who thought they were buying marijuana.
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The objective of this investigation was to perform the aforementioned x-ray measurements on YBCO samples that were considered "good," based on their transport properties.
These are the most extensive structural and electrical transport results on the same crystals reported to by: 3. Also from magnetic torque measurements, it is found that c-axis orientation is perpendicular to the pellet disk plane.
Keywords:YBCO, magnetic torque, shock compaction UCTION The shock compaction effects on crystal structures and properties of high-Tc bulk YBCO Author: H. Kezuka, M. Kikuchi, Y. Syono, K. Fukuoka, S. Kawamata, K. Okuda. Four-point probe measurement and X-ray diffraction (XRD) were used to reveal the properties of superconducting YBCO films.
The transition temperatures of these films are in the range of 86–89 K. Two types of X-ray diffraction standard θ–2θ technique and a glancing angle technique were used to characterize the laser ablated thick by: 2. High resolution x-ray diffraction measurements of YBCO single crystals with optimal transport properties reveal gross structural inhomogeneities, such as domains of different oxygen content and high dislocation densities.
Thin epitaxial YBCO films show similar structural inhomogeneities. By using a citrate pyrolysis technique, Xu et al. have successfully synthesized the YBCO superconducting nanoscale particles and made the X-ray diffraction and SEM analysis. The results showed that the obtained YBCO superfine particles were unsuperconducting tetragonal phase and have a mean size of 40–60 by: 6.
We report on deposition and characterization of YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta///CeO/sub 2/ structures on metallic substrates prepared by a thermal co-evaporation technique. X-ray diffraction analysis reveals good biaxial orientation of both layers with inand out-of-plane FWHM = 8/spl deg/ and 9/spl deg/ respectively on biaxially Author: M.
Bindi, A. Botarelli, A. Gauzzi, L. Gianni, A. Baldini, S. Zannella. Transport Characterization of Silicon-YBCO Buffered Multilayers Deposited by Magnetron Sputtering July IEEE Transactions on Applied Superconductivity 15(2) - X-ray Characterization of Materials Edited by Eric Lifshin Since modern materials such as high-temperature alloys, engineering thermoplastics and multilayer semiconductor films have many elemental constituents distributed in more than one phase, characterization is essential to the systematic development Format: Hardcover.
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The as-shocked specimen showed an oriented crystal structure with the lattice constants of the orthorhombic cell with a=nm, b=nm and c=nm for as-shocked bulk YBCO calculated by XRD(X-ray powder diffraction analysis) just after the shock compaction under GPa.
Also from magnetic torque measurements, it is found that c-axis orientation is perpendicular to the pellet disk Author: H. Kezuka, M. Kikuchi, Y. Syono, K. Fukuoka, S. Kawamata, K. Okuda. The Rietveld refinements of X-ray powder diffraction data show that BaCuO2 addition was successfully produced in superconductor YBCO and the unit-cell parameters of YBCO reach a maximum at x= The critical current density (Jc) also reaches a maximum at x= and then decreases sharply with increasing amount of : Sheng Xu, Xiaoshan Wu, Yanni Gu.
Characterization of Si-CeO2-YBCO tri-layers grown by magnetron sputtering Article in IEEE Transactions on Applied Superconductivity 13(2). X-Ray Characterization NMCF maintains several types of X-ray characterization for bulk and surface characterization of materials.
X-ray diffraction (XRD) provides information on bulk composition and phase for any polycrystalline material including geologic, metal alloy, inorganic, organometallic and organic substances. Material Characterization Chapter 21 pp.Information needed about the structure and composition (surface and X-ray photoelectron spectroscopy (XPS) is a quantitative spectroscopic technique that measures the elemental composition, empirical formula, chemical state and electronic.
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A correlation curve was determined of unit cell volume versus oxygen level in the Size: KB. The particles were characterized using the X-ray diffraction, transmission electron microscope and dynamic light scattering devices. The average diameter of the synthesized YBCO particles was.
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Then, we describe the film characterization using Raman spectroscopy and spectroscopic ellipsometry (SE). The results were correlated and validated by X-ray diffraction (XRD) measurements. It is known that for the PLD process and its main parameters, the correct oxygenation of the YBCO film is important for its superconducting by: 4.What is X-ray Powder Diffraction (XRD) X-ray powder diffraction (XRD) is a rapid analytical technique primarily used for phase identification of a crystalline material and can provide information on unit cell dimensions.
The analyzed material is finely ground, homogenized.