Er8O20Si4

Er8O20Si4 is a thermodynamically stable, insulating erbium silicate compound.

ErOSi
Crystal structure of Er8O20Si4
Ground-state structure · Materials Project
Overview

About Er8O20Si4

Er8O20Si4 is a complex erbium silicate that exists as a thermodynamically stable phase on the convex hull. Its composition, characterized by the integration of rare-earth erbium with oxygen and silicon, results in a robust crystalline architecture that maintains structural integrity under standard conditions.

As a wide-band-gap insulator, this compound is of significant interest for applications requiring stable dielectric properties. Its presence in multiple structural databases highlights its importance as a well-defined material within the broader landscape of rare-earth silicates.

At a glance

Key Properties

Cross-validated computational properties for Er8O20Si4, aggregated across 4 databases.

Band Gap

4.65–4.76 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

7
4 databases, 3 space groups
Uses

Applications

Where Er8O20Si4 is used.

Dielectric materials researchOptical materials developmentSolid-state chemistry studies
Reference

Frequently Asked Questions

Common questions about Er8O20Si4, answered from cross-validated data.

What is Er8O20Si4?

Er8O20Si4 is a thermodynamically stable, insulating erbium silicate compound.

More questions
What is Er8O20Si4 used for?
Er8O20Si4 is used in dielectric materials research, optical materials development, and solid-state chemistry studies.
What is the band gap of Er8O20Si4?
Er8O20Si4 has a DFT-computed band gap of 4.65–4.76 eV across 7 reported structures.
Is Er8O20Si4 a metal, semiconductor, or insulator?
With a wide band gap up to 4.76 eV it is an insulator / wide-band-gap material.
Is Er8O20Si4 thermodynamically stable?
Yes — Er8O20Si4 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Er8O20Si4 are known?
7 structures of Er8O20Si4 are reported across 4 databases, spanning 3 distinct space groups.
What elements does Er8O20Si4 contain?
Er8O20Si4 contains Er, O, and Si (3 elements).
Where does the data for Er8O20Si4 come from?
Er8O20Si4 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a unique member of the erbium silicate family, Er8O20Si4 serves as a benchmark for stability within its class. It represents a highly ordered structural configuration that provides a foundation for understanding how rare-earth elements influence the insulating characteristics of silicate frameworks.

Data sources & attribution
  • latticegraph — Lattice Graph Materials Intelligence Platform

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