Y4 Hf4 O14
semiconductor· Y4 Hf4 O14
Y₄Hf₄O₁₄ is a mixed rare-earth hafnium oxide ceramic compound belonging to the family of high-entropy or complex rare-earth oxides. This material is primarily investigated in research settings as a potential thermal barrier coating (TBC) and high-temperature structural ceramic, leveraging hafnium's exceptional refractory properties and yttrium's role in stabilizing cubic crystal phases. It is notable for its potential to operate at extreme temperatures with low thermal conductivity, making it a candidate for next-generation aerospace and power-generation applications where conventional TBC materials (such as yttria-stabilized zirconia) approach performance limits.
thermal barrier coatingshigh-temperature ceramicsaerospace engine componentsadvanced refractory materialsmaterials research and development
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | — | eV/atom | — | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.