Technology: general issues 7 History of engineering and technology 4 Calculations 3 Density functional theory 3 Electronic structure 3 Energy gap 3 Heusler alloys 3 Perturbation techniques 3 18 valance electron count rule 2 Aliovalent substitution 2 Atoms 2 Boltzmann equation 2 Chemistry 2 Density-functional-theory 2 Dynamics 2 Electron count 2 Electrons 2 First principles 2 Hafnium alloys 2 Half heusler alloy 2 Half-Heusler alloys 2 L-values 2 Lattice vibrations 2 Pentanary 2 Phonon scattering 2 Phonons 2 Ternary alloys 2 Thermal conductivity 2 Thermoelectric transport properties 2 Titanium alloys 2