Exact(9)
The materials are complex -- planes of copper atoms separated by oxygen atoms and rare earth elements like ytrium, bismuth, barium and lanthium -- and theorists must decide which interactions are important and which can be ignored.
The materials contain planes of copper and oxygen ions.
The materials contain planes of copper and oxygen ions with the coppers arranged in a square pattern.
Researchers know that pairs of electrons dance effortlessly along planes of copper and oxygen atoms within larger crystal structures made of elements such as bismuth, strontium, and calcium.
Physicists discovered a new family of superconductors that all contain planes of copper and oxygen atoms and work at much higher temperatures: now as high as 138 kelvin.
Three peaks at 2θ values of 42.91, 51.02, and 73.96 degrees corresponding to (111), (200) and (220) planes of copper is observed.
Similar(51)
The diffraction peaks (Figure 2b) can be indexed to (111), (200), and (220) crystal planes of fcc copper (pdf #88-1326).
Chemisorption of acetylene on different planes of the copper crystal was simulated by density functional theory calculations under the generalized gradient approximation.
The analysis of the circled zones gives an interplanar distance of 2.2 ± 0.1 Å, which can be attributed to the (111) lattice planes of metallic copper (d111 = 2.09 Å; JCPDS card no. 4 0836).
The preferential texture plane of thick copper supporters was (2 2 0) at high current densities, while copper films thinner than 1 μm was strongly oriented along (1 1 1) plane.
A novel concept of air heater using a heating element made from Aluminum metal porous disc surrounded by a DC resistive electrical heater inserted in the mid-plane of a copper tube of (52.8 mm) diameter and (480 mm) length is presented herein.
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