Ca4P2O — Properties & Data | MatWorld

Ca4P2O

ceramic

· Ca4P2O

Ca₄P₂O is an unusual calcium phosphate ceramic compound that belongs to the phosphate ceramic family, though its precise stoichiometry and phase stability are not well-established in mainstream engineering literature, suggesting it may be a research-phase or non-standard composition. This material falls within the broader class of calcium phosphates, which are of significant interest in biomedical applications due to their biocompatibility and chemical similarity to natural bone mineral; however, the specific properties and performance of this particular phase would require verification against established literature or experimental data before engineering adoption. Engineers considering calcium phosphate ceramics typically evaluate them for applications where bioactivity and tissue integration are priorities, though more common phases like hydroxyapatite, tricalcium phosphate, or biphasic mixtures are more widely characterized and specified.

biomedical research compoundsbone substitute materials (experimental)dental applications (research phase)structural phosphate ceramicshigh-temperature ceramic matrices

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	9,562.3	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2100	-	DFT · OptB88vdW
Shear Modulus(G)	6,848.7	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.09436	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.269	eV	DFT · OptB88vdW
↳	1.956	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	30.04	-	DFT · OptB88vdW
↳	31.26	-	DFT · PBE
↳	18.83 range 7.907–29.74median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	8.069	-	DFT · OptB88vdW
↳	6.362	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.6800	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.130	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000866	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00185	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-115	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	264.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	23.90	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.878	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

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.

Ca4P2O

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental