Related Experiment Video
Updated: May 30, 2026

Finite Element Modelling of a Cellular Electric Microenvironment
Published on: May 18, 2021
Structural models of FeSe(x)
E Z Kurmaev1, J A McLeod, N A Skorikov
1Institute of Metal Physics, Russian Academy of Sciences-Ural Division, 620219 Yekaterinburg, Russia.
Abstract:
Two different structural models for non-stoichiometric FeSe(x) are examined and compared with soft x-ray spectroscopy findings for FeSe(x) (x = 0.85, 0.50). A structural model of tetragonal FeSe with excess interstitial Fe gives better agreement with experiment than a structural model of tetragonal FeSe with Se vacancies. This interstitial Fe increases the number of 3d states at the Fermi level. We find evidence that large non-stoichiometric ratios of Fe:Se, such as that of FeSe(0.50), yield clusters of pure Fe in the crystal structure.
Related Concept Videos
Mechanistic Models: Compartment Models in Individual and Population Analysis
Molecular Models
VSEPR Theory and the Basic Shapes
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
Method of Sections
Association Areas of the Cortex
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...

