Surface Characterization of Lanthanum Aluminate (LaAlO3)
نویسندگان
چکیده
...................................................................................................................... iii
منابع مشابه
Modifying the polarization state of terahertz radiation using anisotropic twin-domains in LaAlO₃.
Polarization-resolved terahertz (THz) time-domain spectroscopy was utilized to examine the complex refractive index of lanthanum aluminate (LaAlO3), a rhombohedrally distorted perovskite that exhibits crystallographic twin domains. The uniaxial anisotropy of the refractive index was quantified. The ellipticity of THz radiation pulses after transmission through single domains indicated that LaAl...
متن کاملUnderstanding surface structure and chemistry of single crystal lanthanum aluminate
The surface crystallography and chemistry of a LaAlO3 single crystal, a material mainly used as a substrate to deposit technologically important thin films (e.g. for superconducting and magnetic devices), was analysed using surface X-ray diffraction and low energy ion scattering spectroscopy. The surface was determined to be terminated by Al-O species, and was significantly different from the i...
متن کاملNovel designs of high-temperature superconducting bandpass filters for future digital communication services
The design and experimental results of a 5-, 10and 23-pole lumped-element HTS bandpass filters for the applications in digital terrestrial television and other digital communication services is reported here. These filters are designed around 800 MHz centre frequency, 7.6 MHz bandwidth using end-coupled lumped element resonators on yttrium-barium-copper-oxide (YBCO) or thallium-barium-calcium-c...
متن کاملInfluence of perovskite termination on oxide heteroepitaxy
We report a combined high-temperature scanning tunneling microscopy, ion scattering spectroscopy, and photoelectron spectroscopy study of bare lanthanum aluminate LaAlO3 LAO and of the initial stages of anatase TiO2 growth on LAO 001 . LAO 001 exhibits mixed La–O and Al–O2 surface terminations at 400 °C. Heteroepitaxial TiO2, grown by evaporating Ti metal in O2, nucleates near step edges, growi...
متن کاملModel catalytic oxide surfaces: a study of the LaAlO3(001) surface
Insight into the nature of surfaces and the processes which occur on them is of great importance in the study of catalysis. For example, mixed metal oxides are known to be catalytically active for the oxidation of CO and the reduction of NOx (automobile exhaust). A practical example of the need for better catalysts is in the chemical industry, where approximately 50% of the total municipal soli...
متن کامل