GaPO4 — Properties & Data | MatWorld

GaPO4

ceramic

· GaPO4

GaPO4 is a gallium phosphate ceramic compound belonging to the family of III-V phosphide ceramics, known for its crystalline structure and piezoelectric properties. It is primarily used in high-temperature acoustic and electronic device applications, particularly in resonators, filters, and sensor systems where superior thermal stability and frequency precision are required beyond what conventional quartz materials can provide. This material is notable for its potential in aerospace, defense, and harsh-environment electronics where conventional piezoelectric ceramics degrade, making it a research-focused alternative for next-generation high-temperature transducers and frequency control devices.

high-temperature acoustic resonatorspiezoelectric sensorsaerospace electronicsharsh-environment frequency standardshigh-temperature filtersdefense/military applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	3,211.1	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.1100	-	DFT · OptB88vdW
Shear Modulus(G)	3,859.5	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1196	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	4.656	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)2 entries	5.428	-	DFT · OptB88vdW
↳	3.587 range 2.475–4.700median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.836	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.1703	C/m²	DFT · OptB88vdW
↳	0.1502	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.000690	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000216	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-108.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	464.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	0.01290	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.173	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.

GaPO4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental