Y2Si2O7

Yttrium disilicate · Yttrium pyrosilicate

Yttrium disilicate is a stable, insulating ceramic material widely utilized for its excellent thermal properties in high-performance coatings.

OSiY
Crystal structure of Y2Si2O7
Ground-state structure · Materials Project
Overview

About Yttrium disilicate

Yttrium disilicate is a robust inorganic compound that exists as a thermodynamically stable phase on the convex hull. Its insulating electronic character and structural versatility make it a significant material for demanding engineering environments where thermal and chemical resilience are paramount.

With numerous reported structural variations, this compound is highly valued for its ability to maintain integrity under extreme conditions. It serves as a foundational material in specialized ceramic applications, particularly where high-temperature stability is required for structural or protective components.

At a glance

Key Properties

Cross-validated computational properties for Yttrium disilicate, aggregated across 3 databases.

Band Gap

4.60–5.38 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

23
3 databases, 5 space groups
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting Y2Si2O7.

Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Uses

Applications

Where Yttrium disilicate is used.

Thermal barrier coatingsEnvironmental barrier coatingsCeramic matrix compositesPhosphor host materials
Reference

Frequently Asked Questions

Common questions about Yttrium disilicate, answered from cross-validated data.

What is Y2Si2O7?

Yttrium disilicate is a stable, insulating ceramic material widely utilized for its excellent thermal properties in high-performance coatings.

More questions
What is Y2Si2O7 used for?
Yttrium disilicate (Y2Si2O7) is used in thermal barrier coatings, environmental barrier coatings, ceramic matrix composites, and phosphor host materials.
What is the band gap of Y2Si2O7?
Yttrium disilicate (Y2Si2O7) has a DFT-computed band gap of 4.60–5.38 eV across 23 reported structures.
Is Y2Si2O7 a metal, semiconductor, or insulator?
With a wide band gap up to 5.38 eV it is an insulator / wide-band-gap material.
Is Y2Si2O7 thermodynamically stable?
Yes — Yttrium disilicate (Y2Si2O7) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Y2Si2O7 are known?
23 structures of Y2Si2O7 are reported across 3 databases, spanning 5 distinct space groups.
How is Y2Si2O7 synthesized?
Literature-reported routes for Y2Si2O7 include sol gel, solid state (10 procedures documented).
What elements does Y2Si2O7 contain?
Yttrium disilicate (Y2Si2O7) contains O, Si, and Y (3 elements).
Where does the data for Y2Si2O7 come from?
Y2Si2O7 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a highly stable and well-documented material, yttrium disilicate stands as a primary candidate for high-temperature applications within the broader family of rare-earth silicates, offering a reliable benchmark for structural performance and chemical durability.

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

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