Discussion

Inorganic, non-metallic solid composed of metallic or metalloid atoms chemically bonded to non-metallic atoms

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Inorganic, non-metallic solids composed of metallic and non-metallic elements held together primarily by ionic or covalent bonds; typically characterized by high melting points, high compressive strength, hardness, chemical inertness, and electrical/thermal insulation properties.

Change note: Initial AI-generated definition

I would like to see additional information about the physical properties of ceramics

The grid of points used to sample the Brillouin zone when integrating over reciprocal space in a periodic electronic structure calculation.

Change note: Initial contribution

The grid of points used to sample the Brillouin zone when integrating over reciprocal space in a periodic electronic structure calculation. The mesh density must be converged for the specific property being computed, and metals generally require denser sampling than insulators because of the discontinuity at the Fermi surface.

Change note: Added the convergence requirement and the reason metals need denser sampling than insulators.

A simplified stand-in for the nucleus and tightly bound core electrons of an atom, constructed so that the valence electrons behave as they would in the full system. Replacing the sharply varying core region with a smooth effective potential is what makes plane-wave electronic structure calculations tractable.

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An effective potential used in computational quantum mechanics to replace the complex interaction between an ion's nucleus and its core electrons with a simplified potential, focusing calculations solely on the chemically active valence electrons.

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The energy released or required when a compound forms from its constituent elements, used to judge whether a predicted structure is thermodynamically favorable.

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The difference in total energy between a compound and its constituent elements in their respective standard states, typically expressed in electronvolts (eV) per atom or per formula unit. A negative formation energy indicates thermodynamic stability relative to the precursors. Because values may be reported using different normalization bases, datasets are not directly comparable unless the energy basis is explicitly stated.

Change note: Accepted AI refinement round 2

The interface between two adjacent crystalline grains whose crystal lattices have different orientations.

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A planar defect representing the interface between two adjacent crystals (grains) with differing crystallographic orientations.

Change note: Accepted AI refinement round 1

The interface between two adjacent crystals (grains) characterized by a discontinuity in crystallographic orientation.

Change note: Accepted an AI-assisted discussion suggestion

I agree with the addition comment about differing crystallographic orientations.

Heating a metal and letting it cool slowly so it becomes softer and easier to work with.

Change note: Initial contribution

A heat treatment process in which a material is heated to a specific temperature, held at that temperature for a designated period, and then cooled at a controlled rate (typically slowly) to induce structural changes such as grain growth, reduction of dislocation density, relief of internal residual stresses, or alteration of phase composition.

Change note: AI-generated definition