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Showing 1 to 9 of 9 for “"off-stoichiometric"”.
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Properties of off stoichiometric yttrium iron garnet
… substrates. However, RSM results show that the off-stoichiometric YIG film on (111) GGG substrates can remain fully strained in plane with thickness from 23 nm to 74 nm; while the samples on (001) GGG substrates show different degrees of relaxation in-plane depending on film thickness. Magnetic …
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Optical modeling off-stoichiometric amorphous Al2O3 thin films deposited by reactive sputtering
… common in thin film technology. Alumina/aluminum/off-stoichiometric thin films were deposited by the reactive sputtering, which enabled us to vary the composition of films by controlling the oxygen flow ratio fed into the deposition system. The composition of the films was investigated with X-ray …
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Designing materials for energy storage with high power and energy density : LiFePO₄ cathode material
… of nanoscale LiFePO₄ is created by using proper off-stoichiometry (LiFeo.9Po.9504.3). The off-stoichiometric strategy leads to small particles less than 50 nm through grain growth restriction and a poorly crystallized lithium phosphate on the surface. The conducting surface phase can not only …
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Energy absorption in Ni-Mn-Ga/ polymer composites
… attention as a new kind of actuator material. Off-stoichiometric single crystals of Ni2MnGa can regularly exhibit 6% strain in tetragonal martensites and orthorhombic martensites have shown up to 10% strain when subjected to a magnetic field. These crystals are brittle and the production of …
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Zirconium nitride contacts for cadmium telluride solar cells
… However, thicker ZrN leads to peeling off of films. Thicknesses beyond 300 nm do not result in better contacts. Cu is known to improve the performance of CdTe/CdS solar cells. However, a dual effect of Cu on the performance of CdTe/CdS solar cells indicates that the ones with more Cu …
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Defect Structures in Ordered Intermetallics; Grain Boundaries and Surfaces in FeAl, NiAl, CoAl and TiAl
… were calculated for boundaries contained in both stoichiometric and off-stoichiometric bulk. The surface energies for these aluminides were also calculated so that trends concerning the cohesive energy of the boundaries could be studied. The implications of stoichiometry, the multiplicity of the …
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A new theory of premixed flames in near-stoichiometric mixtures
… a new model of premixed flames in near-stoichiometric mixtures is derived. Unlike most previous theories, which are valid only for very lean or very rich, i.e. off-stoichiometric conditions, our model remains valid over the entire spectrum of mixture compositions, from lean to rich, …
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Atomistic simulation of dislocation core structures in B2 NiAl
… of (100), (110), and (111)dislocations in off stoichiometric NiAl show that the core structures became more extended than the ones in the stoichiometric NiAl. The core structures are not only dependent on the overall composition but also on their local atomic arrangement near the core …
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The thermodynamics, kinetics and modelling of fast-charging lithium-ion batteries featuring crystallographic shear niobium metal oxide anodes
… ratios of 2.33 ≤ *y* < 2.82. These "off-stoichiometric" ratios typically force the unit cell to rearrange into an ordered balance of *y*=3 ReO<sub>3</sub>-type blocks of corner-sharing octahedra that have ample window sites to rapidly intercalate many lithium-ions, interspaced with …