Ca4 Hf2 O8

semiconductor
· Ca4 Hf2 O8

Ca₄Hf₂O₈ is a ceramic oxide compound combining calcium and hafnium in a mixed-valence structure, belonging to the family of complex oxides with potential semiconductor properties. This material is primarily investigated in research contexts for high-temperature applications and advanced electronic devices, where hafnium-based ceramics are valued for their thermal stability, chemical inertness, and potential for tuning electronic properties through compositional design. While not yet widely commercialized, compounds in this family are of interest as alternatives to conventional oxides in extreme-environment electronics and as gate dielectrics or thermal barrier coating components where hafnium's high melting point and mechanical rigidity provide advantages over traditional materials.

high-temperature ceramics researchadvanced electronic materialsthermal barrier coatings (experimental)nuclear/aerospace applications (exploratory)oxide semiconductor developmentrefractory compounds

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)
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Shear Modulus(G)
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ksi——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
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eV——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Formation Energy(ΔHf)
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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.