Ba₂HfS₄ is an inorganic ceramic compound belonging to the thiohafnate family, combining barium, hafnium, and sulfur in a structured lattice. This is a research-phase material studied primarily for its potential in optical, electronic, and thermal applications where sulfide ceramics offer advantages over oxide counterparts, particularly in infrared transparency and semiconductor compatibility. The material represents an emerging class of multivalent ceramic compounds that may find use in specialized photonic devices, solid-state thermal barriers, or next-generation electronic substrates where conventional ceramics prove inadequate.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 57.61 | GPa | — | ||
| ↳ | 62.37 | GPa | — | ||
Poisson's Ratio(ν) | 0.2800 | - | — | ||
Shear Modulus(G)2 entries | 30.23 | GPa | — | ||
| ↳ | 33.98 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 4.997 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.9120 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 38.73 | - | — | ||
| ↳ | 23.57 range 7.473–39.67median of 2 measurements | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -112 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -2.104 | eV/atom | — |