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A new solid solution (Li x Ag 1-x ) 2 SO 4 (x ≤ 0.50) phase with orthorhombic structure, similar to β-Ag 2 SO 4 is found when calcining a mixture of Li 2 SO 4 and Ag 2 SO 4 above 550°C and cooling to room temperature. A thermal analysis revealed that the high temperature stable bcc (Li x Ag 1 ...
We have investigated the photo-modulated reflection spectra of GaAs quantum wells where the top barrier is confined by thin Al 0.3 Ga 0.7 As layers. The optical transitions spectra of the first heavy hole hh1 and the first light hole lh1 states to the first electron sublevel e1 are observed. Due to the increase of the confinement potential in the near-surface quantum...
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