Si4P4Ru — Properties & Data | MatWorld

Si4P4Ru

ceramic

· Si4P4Ru

Si₄P₄Ru is an experimental ceramic compound combining silicon, phosphorus, and ruthenium phases, representing research into transition metal-reinforced phosphide ceramics for extreme-environment applications. This material family is under investigation for high-temperature structural use where conventional ceramics may lack sufficient mechanical performance or chemical stability. The ruthenium addition provides potential benefits in thermal conductivity, oxidation resistance, and mechanical damping compared to conventional silicate or phosphide ceramics alone.

High-temperature structural applicationsOxidation-resistant coatingsThermal management systemsResearch material developmentWear-resistant componentsAerospace experimental alloys

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	119.8	GPa	DFT
↳	116.2	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2000	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	86.41	GPa	DFT
↳	90.33	GPa	DFT · OptB88vdW

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.

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.603	kg/m³	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	1.523	eV	DFT · OptB88vdW
↳	1.741	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	18.35	-	DFT · OptB88vdW
↳	18.45	-	DFT · PBE
↳	17.22 range 15.52–18.93median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	15.18	-	DFT · OptB88vdW
↳	12.99	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	1.083	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.800	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.3697	C/m²	DFT · OptB88vdW
↳	0.1763	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00219	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00164	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-274.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	307.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	28.55	%	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.3528	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.

Si4P4Ru

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental