Y4 Hf4 O14 — Properties & Data | MatWorld

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	3.451	eV	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-3.835	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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.

Y4 Hf4 O14

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control