CoPt — Properties & Data | MatWorld

CoPt

metal

· CoPt

CoPt is a cobalt-platinum intermetallic compound belonging to the hard magnetic alloy family, known for its exceptional magnetic hardness and high ordering temperature. It is primarily employed in permanent magnet applications, magnetic recording media, and high-performance spintronic devices where strong, stable magnetism and thermal stability are critical. CoPt's L1₀ ordered crystal structure makes it particularly valuable in perpendicular magnetic recording and next-generation magnetic storage technologies, where it offers superior coercivity and thermal stability compared to conventional ferromagnetic alloys.

permanent magnetsmagnetic recording mediahard disk drivesmagnetoelectronic deviceshigh-temperature magnetic applicationsperpendicular magnetic recording

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	31,313.7	ksi	DFT
↳	32,112.8	ksi	DFT · OptB88vdW
↳	31,313.7	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.5506	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.3000	-	DFT · OptB88vdW
↳	0.2856	-	DFT · PBE
Shear Modulus(G)3 entries	15,663.9	ksi	DFT
↳	15,465.4	ksi	DFT · OptB88vdW
↳	15,663.9	ksi	DFT · PBE

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
Density(ρ)	0.5644	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
Magnetic Moment(μB)	4.447	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000422	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000430	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-7.460	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-7.540	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00250	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.07007	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

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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.

CoPt

Mechanical Properties

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