HoIO — Properties & Data | MatWorld

HoIO

ceramic

· JVASP-93461· HoIO

HoIO is a rare-earth ceramic compound composed of holmium and iodine oxide, belonging to the class of ionic ceramics with potential applications in advanced functional materials research. This material is primarily of interest in academic and developmental contexts as a layered or semi-layered ceramic, where its moderate stiffness and relatively low density make it a candidate for studying structure-property relationships in rare-earth halide systems. Unlike conventional structural ceramics, HoIO's exfoliation characteristics suggest potential utility in layered-material research and as a precursor platform for exploring rare-earth ceramics in emerging technologies such as optical, thermal, or electronic applications.

rare-earth ceramic researchlayered material studiesoptical/photonic material developmentthermal management compoundsmaterials science experimentation

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	45.48	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	47.64	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2800	-	DFT · OptB88vdW
Shear Modulus(G)	25.49	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	7.317	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	3.520	eV	DFT · OptB88vdW
↳	4.606	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	15.68	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.070	-	DFT · OptB88vdW
↳	4.276	-	DFT · TBmBJ
Electron Effective Mass(m*e)	2.300	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.157	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	0.00201	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00471	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-372.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	345	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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)	0.07370	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.835	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.

HoIO

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental