G
George A. Samara
Researcher at Sandia National Laboratories
Publications - 89
Citations - 4871
George A. Samara is an academic researcher from Sandia National Laboratories. The author has contributed to research in topics: Hydrostatic pressure & Dielectric. The author has an hindex of 33, co-authored 89 publications receiving 4658 citations.
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The relaxational properties of compositionally disordered ABO3 perovskites
TL;DR: In this article, a review of the relaxational properties of random-site electric dipoles in dielectrics is presented, including the role of pressure and applied dc biasing electric fields in understanding the physics of these materials including the R-to-FE crossover.
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Temperature and pressure dependences of the dielectric constants of semiconductors
TL;DR: In this article, the effects of temperature and hydrostatic pressure on the static dielectric constant (epsilon) were investigated for a group of crystalline semiconductors chosen to be representative of III-V compounds (GaAs and GaP), II-VI compounds (ZnS and CdS), and group-IV (Si) materials.
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Optical and Electronic Properties of Si Nanoclusters Synthesized in Inverse Micelles
TL;DR: In this paper, high-resolution TEM and electron diffraction results show that these nanocrystals retain their cubic diamond stuctures down to sizes approximately 4 nm in diameter, and optical absorption data suggest that this structure and bulk-like properties are retained down to the smallest sizes produced ({approximately}1.8 nm diameter containing about 150 Si atoms).
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Synthesis and optical properties of MoS2 and isomorphous nanoclusters in the quantum confinement regime
TL;DR: In this paper, high-level optical properties of hexagonal (2H polytype) MoS2 and several isomorphous Mo and W chalcogenides have been synthesized with excellent control over cluster size.
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Strong quantum-size effects in a layered semiconductor: MoS 2 nanoclusters
J. P. Wilcoxon,George A. Samara +1 more
TL;DR: High-quality, size-selected, nano-size clusters of MoS[sub 2] have been successfully grown inside inverse micellar cages and their optical properties have been studied, showing a crossover from bandlike (solid) to moleculelike spectra as the size of the clusters becomes smaller than that of the exciton in the bulk.