Crystal lattice parameter measurements using K.ALPHA. doublet.

Direct Lattice Parameter Measurements Using HAADF-STEM

Lattice strain is generated in crystal structures as a result of atomic size differences between host atom and solute elements during substitutional alloying. Extensive work has been performed to study lattice parameter variation with alloying elements, primarily using diffraction methods. The global information provided by reciprocal space analysis, however, limits access to local structural d...

Orientational Order Parameter Measurements of Discotic Liquid Crystal

The IR dichroism technique is a convenient method which can be used to measure the molecular order parameter corresponding to the IR bands exclusively present in the disc –like molecules in discotic liquid crystal (DLC). To measure orientational order parameter, homeotropic alignment of discotic liquid crystal was attained by slow cooling of sample from isotropic phase on untreated flat CaF2 su...

Crystal Structure and Lattice Parameter Investigation of La3+ Substituted CeO2 in LaxCe1-xO2-X/2 Synthesized by Solid-State Method

Lanthanum (La) doped Ceria (CeO2) has attracted considerable interest as a candidate material for thermal barrier coating (TBC) because of its low thermal conductivity and potential capability to be operated above 1250°C. In this study, La2Ce2O7 powder was synthesized through the ball mill method. The crystal structure of La3+ su...

A new approach to lattice parameter measurements using dynamic electron diffraction and pattern matching

We describe a new approach based on pattern matching for lattice parameter measurements using convergent beam electron diffraction (CBED). Theoretical CBED patterns are calculated using the Bloch wave method. Both experimental and theoretical patterns are processed to enhance the geometric features, and then compared using correlation. By including the dynamic and thickness effects in the simul...

Crystal Lattice Imaging Using Atomic Force Microscopy