49 research outputs found
Promoção do crescimento vegetal de plantas de milho inoculadas com bactérias diazotróficas em Roraima.
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Single crystal perovskites analyzed using X-ray photoelectron spectroscopy: 4. (LaAlO3)0.3(Sr2TaAlO6)0.7(001)
X-ray photoelectron spectroscopy (XPS) was used to analyze a commercially available (LaAlO3)0.3(Sr2TaAlO6)0.7 (001) bulk single crystal. XP spectra were obtained using incident monochromatic Al Kα radiation at 0.83401 nm. A survey spectrum together with La 3d, O 1s, C 1s, Sr 3p, Ta 4d, La 4p, Sr 3d, Al 2s, La 4d, Al 2p, Ta 5p, La 5s, Ta 4f, O 2s, Sr 4p and La 5p core level spectra and the valence band are presented. The spectra indicate the principle core level photoelectron and Auger electron signals and show only minor carbon contamination. Making use of the O 1s, Sr 3d, La 4d, Al 2p Ta 4f lines and neglecting the components related to surface contaminants, XPS quantitative analysis reveals an altered stoichiometry of the air-exposed crystal surface of La0.34Sr0.88Al0.82Ta0.43O3
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Single crystal perovskites analyzed using X-ray photoelectron spectroscopy: 2. YAlO3(110)
X-ray photoelectron spectroscopy (XPS) was used to analyze a commercially available YAlO3(110) bulk single crystal. XP spectra were obtained using incident monochromatic Al Kα radiation at 0.83401 nm. A survey spectrum together with O 1s, Y 2p, C 1s, Y 3d, Al 2p, Y 4p, and O 2s core level spectra and the valence band are presented. The spectra indicate the principle core level photoelectron and Auger electron signals and show only minor carbon contamination. Making use of the O 1s, Y 3d, Al 2p lines and neglecting the components related to surface contaminants, XPS quantitative analysis reveals an altered stoichiometry of the air-exposed crystal surface of YAl1.06O2.48
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Single crystal perovskites analyzed using X-ray photoelectron spectroscopy: 3. LaAlO3(001)
X-ray photoelectron spectroscopy (XPS) was used to analyze a commercially available LaAlO3(001) bulk single crystal. XP spectra were obtained using incident monochromatic Al Kα radiation at 0.83401 nm. A survey spectrum together with La 3d, O 1s, C 1s, La 4p, Al 2s, La 4d, Al 2p, La 5s, O 2s and La 5p core level spectra and the valence band are presented. The spectra indicate the principle core level photoelectron and Auger electron signals and show only minor carbon contamination. Making use of the O 1s, La 4d, Al 2p lines and neglecting the components related to surface contaminants, XPS quantitative analysis reveals an altered stoichiometry of the air-exposed crystal surface of LaAl1.03O2.23
Single crystal perovskites analyzed using X-ray photoelectron spectroscopy: 1. SrTiO3(001)
X-ray photoelectron spectroscopy (XPS) was used to analyze a commercially available SrTiO (001) bulk single crystal. XP spectra were obtained using incident monochromatic Al K radiation at 0.83401 nm. A survey spectrum together with O 1s, Ti 2p, C 1s, Sr 3p, Sr 3d, Ti 3p, Sr 4p, Ti 3p, Sr 4p, and O 2s core level spectra and the valence band are presented. The spectra indicate the principle core level photoelectron and Auger electron signals and show only minor carbon contamination. Making use of the O 1s, Ti 2p, Sr 3d lines and neglecting the components related to surface contaminants, XPS quantitative analysis reveals an altered stoichiometry of the air-exposed crystal surface of Sr TiO . 3 α 1.16 2.0
An introduction to single crystal perovskites and single crystal rare-earth scandate perovskites analyzed using X-ray photoelectron spectroscopy
Single crystal perovskites analyzed using X-ray photoelectron spectroscopy: 4. (LaAlO3)0.3(Sr2TaAlO6)0.7(001)
X-ray photoelectron spectroscopy (XPS) was used to analyze a commercially available (LaAlO3)0.3(Sr2TaAlO6)0.7 (001) bulk single crystal. XP spectra were obtained using incident monochromatic Al Kα radiation at 0.83401 nm. A survey spectrum together with La 3d, O 1s, C 1s, Sr 3p, Ta 4d, La 4p, Sr 3d, Al 2s, La 4d, Al 2p, Ta 5p, La 5s, Ta 4f, O 2s, Sr 4p and La 5p core level spectra and the valence band are presented. The spectra indicate the principle core level photoelectron and Auger electron signals and show only minor carbon contamination. Making use of the O 1s, Sr 3d, La 4d, Al 2p Ta 4f lines and neglecting the components related to surface contaminants, XPS quantitative analysis reveals an altered stoichiometry of the air-exposed crystal surface of La0.34Sr0.88Al0.82Ta0.43O3