Ba8Ga18Ge28 is a clathrate compound—a crystalline ceramic material with a cage-like crystal structure that traps barium atoms within a framework of gallium and germanium. This is an experimental material primarily investigated for thermoelectric applications, where its unique atomic structure can scatter phonons effectively while maintaining reasonable electrical conductivity. The material represents a family of clathrate compounds being developed as alternatives to traditional thermoelectric materials, particularly for waste heat recovery and solid-state cooling systems where the intrinsic thermal insulation combined with electronic transport properties offers advantages over conventional semiconductors.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Thermal Conductivity(k)2 entries | 1.100 | W/(m·K) | — | ||
| ↳ | 1.100 | W/(m·K) | 427°C |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Electrical Conductivity(σ) | 134.8 | S/cm | 427°C | ||
Electrical Resistivity(ρe) | 0.0000742 | Ω·m | 427°C | ||
Thermoelectric Power Factor(PF) | 0.000647 | W/(m·K²) | 427°C | ||
Seebeck Coefficient(S) | -219 | μV/K | 427°C | ||
Thermoelectric Figure of Merit(zT) | 0.4114 | - | 427°C |