semivacancy
nounEtymology From semi- + vacancy.
1
Natural sciences, Physical sciences, Physics A vacancy defect in which two adjacent lattice sites are unoccupied and an atom occupies the interstitial site between the two vacant sites.
- The semivacancies are separated by a variable number of Ge adatoms in metastable T₄ positions and can diffuse or eventually merge back into a single vacancy.2008, Edmund G. Seebauer, Meredith C. Kratzer, Charged Semiconductor Defects: Structure, Thermodynamics and Diffusion, page 219:
- In the undistorted configurations both a divacancy and a semivacancy pair belong to the symmetry point group D3d .2012, D. Shaw, Atomic Diffusion in Semiconductors, page 234: