Precipitation of Nanocrystalline Phases from Amorphous Phase

Direct separation of short range order in intermixed nanocrystalline and amorphous phases.

Diffraction anomalous fine-structure (DAFS) and extended x-ray absorption fine-structure (EXAFS) measurements were combined to determine short range order (SRO) about a single atomic type in a sample of mixed amorphous and nanocrystalline phases of germanium. EXAFS yields information about the SRO of all Ge atoms in the sample, while DAFS determines the SRO of only the ordered fraction. We dete...

Amorphous and Nanocrystalline Soft Magnets

− The article surveys amorphous and nanocrystalline alloys for soft magnetic applications. Both materials have much in common starting from their way of production and ranging over to the key factors which determine their properties. Thus, the magneto-crystalline anisotropy is randomly fluctuating on a scale much smaller than the domain wall width and, as a consequence, is averaged out by excha...

Raman spectroscopy of nanocrystalline and amorphous GaN

Characterization of amorphous and nanocrystalline carbon films

Amorphous and nanocrystalline carbon films possess special chemical and physical properties such as high chemical inertness, diamond-like properties, and favorable tribological proprieties. The materials usually consist of graphite and diamond microstructures and thus possess properties that lie between the two. Amorphous and nanocrystalline carbon films can exist in different kinds of matrices...

Optimization of open circuit voltage in amorphous silicon solar cells with mixed-phase „amorphous+nanocrystalline... p-type contacts of low nanocrystalline content

Both the origins of the high open circuit voltages VOC in amorphous silicon solar cells having p layers prepared with very high hydrogen dilution and the physical structure of these optimum p layers remain poorly understood topics, with several studies offering conflicting views. This work attempts to overcome the limitations of previous studies by combining insights available from electronic m...