Zur Abschätzung physikalischer und physikalisch-chemischer Daten von AlBV-Verbindungen mit Zinkblendestruktur

The AlB^V-compounds display an exceptional position among A^IIIB^V-compounds regarding some properties which are related to the lattice constant. This behaviour is connected with the absence of core-d-electrons in Al. The compressibilities of AlP, AlAs and AlSb can be estimated from the lattice constant and the microhardness in fair agreement with calculated values. Relations between the lattice constants, molecular weight, some band structure parameters, the heats of formation and the surface energies are discussed. Phillips' ionicity parameter of AlSb is corrected and the bowing parameter of the energy gap of mixed AlB^V-compounds is calculated from the difference of the atomic radii of the substitutes.