نتایج جستجو برای: sr doped laalo3
تعداد نتایج: 75789 فیلتر نتایج به سال:
The effects of calcium (Ca) or strontium (Sr) on host osteogenesis and immune responses have been investigated separately. In clinical practice, these two elements may both be present around an orthopedic device, but their potential synergistic effects on osteogenesis and the immune response have not been explored to date. In this work, we investigated the immunomodulatory effects of Ca and Sr ...
We demonstrate that the electrical conductivity of metal/semiconductor oxide heterojunctions can be increased over 7 orders of magnitude by inserting an ultrathin layer of LaAlO3. This counterintuitive result, that an interfacial barrier can be driven transparent by inserting a wide-gap insulator, arises from the large internal electric field between the two polar LaAlO3 surfaces. This field mo...
Currently, the discharge of wastewater and utilization phosphorus (P) in human activities cause some environmental problems, such as high organic pollutants aquatic environments which results dirty water sources, a shortage phosphate rock reserves due to demand P. Therefore, fuel energy struvite crystallization from waste sources can be considered interesting alternatives. In this work, modifie...
We report here, for the first time, a novel multi-scaled hybrid orthopedic implant material consisting of a macroporous Ti scaffold, whose macropores' walls have a microporous titania layer which is fully covered with nanofibers of Sr-doped hydroxyapatite (Sr-HA). The microporous titania layer is formed on and within the Ti scaffold by micro-arc oxidation, which firmly binds to the Ti substrate...
Doped-BaGdInO4 is a promising material for many applications including solid oxide fuel cells due to its high oxide-ion conductivity. Here we employ atomistic simulations show that the activation energy oxygen migration in Ca-doped BaGdInO4 lower as compared undoped and importantly divalent doping will form vacancies. The results are consistent with recent experimental work determined an increa...
Here, we report the presence of defect-related states with magnetic degrees of freedom in crystals of LaAlO3 and several other rare-earth based perovskite oxides using inelastic light scattering (Raman spectroscopy) at low temperatures in applied magnetic fields of up to 9 T. Some of these states are at about 140 meV above the valence band maximum while others are mid-gap states at about 2.3 eV...
Magnetic interactions in solids are normally mediated by short-range exchange or weak dipole fields. Here we report a magnetic interaction that can propagate over long distances (∼10 nm) across a polar insulating oxide spacer. Evidence includes oscillations of magnetization, coercivity and field-cooled loop shift with the thickness of LaAlO3 in La0.67Sr0.33MnO3/LaAlO3/SrTiO3 heterostructures. S...
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