Recent applications of EXAPS spectroscopy are discussed: (1) Fe impurities implanted into Si occupy a distorted tetrahedral interstitial site where the first coordination shell expands about the impurity atom and the second shell contracts: (2) the local MnSe and ZnSe bond lengths in the diluted magnetic semiconductor Zn1−xMnxSe are constant within ∼0.01A even though the lattice constant as determined by x-ray diffraction varies by approximately 0.2 Å and the system undergoes a structural phase change; (3) the ferroelectric phase transition in Pb1−xGexTe has an order-disorder as well as displacive character; and (4) preliminary results show the feasibility of non-destructive measurement of a “buried” Al/GaAs interface.
關聯:
Superlattices and Microstructures 4(4-5), pp.489-492