Intrinsic paramagnetic defects probe the superionic phase transition in mechanochemically synthesized AgI nanocrystals

Article Abstract:

Electron paramagnetic resonance (EPR) of two intrinsic paramagnetic centers generated by soft mechanochemistry of Ag and I to yield zinc blende gamma-AgI nanoparticles is used to investigate the gamma-alpha superionic phase transitions in AgI. The EPR study together with high-temperature electronic conductivity behavior demonstrates that the creation of electronic defects is essential for the formation of gamma-AgI nanoparticles in a near-equilibrium process such as the mechanochemical reaction (MCR).

Iodine & Compounds, Usage, Electron paramagnetic resonance spectroscopy, Silver compounds, Atomic properties, Iodine compounds

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On the origin of a permanent dipole moment in nanocrystals with a cubic crystal lattice: Effects of truncation, stabilizers, and medium for CdS tetrahedral homologues

Article Abstract:

A large anomalous dipole moment is reported for nanocrystals with a cubic crystal lattice. The molecular modeling approach presented is suitable for detailed theoretical studies of the dipole moments of II-VI and other nanoparticles and interparticle interactions in fluids.

Cadmium Compounds, Analysis, Electric properties, Crystal lattices, Magnetic dipoles, Dipoles (Electromagnetism)

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