In Situ Observation of Antisite Defect Formation during Crystal Growth
| Title | In Situ Observation of Antisite Defect Formation during Crystal Growth |
| Publication Type | Journal Article |
| Year of Publication | 2010 |
| Authors | Kramer MJ, Mendelev MI, Napolitano RE |
| Journal Title | Physical Review Letters |
| Volume | 105 |
| Pages | 245501 |
| Date Published | 12 |
| Type of Article | Article |
| ISBN Number | 0031-9007 |
| Accession Number | ISI:000286744500008 |
| Keywords | alloys, CRYSTALLIZATION, liquid, model, solidification, transition |
| Abstract | In situ x-ray diffraction (XRD) coupled with molecular dynamics (MD) simulations have been used to quantify antisite defect trapping during crystallization. Rietveld refinement of the XRD data revealed a marked lattice distortion which involves an a axis expansion and a c axis contraction of the stable C11b phase. The observed lattice response is proportional in magnitude to the growth rate, suggesting that the behavior is associated with the kinetic trapping of lattice defects. MD simulations demonstrate that this lattice response is due to incorporation of 1% to 2% antisite defects during growth. |
| URL | <Go to ISI>://000286744500008 |
| DOI | 10.1103/PhysRevLett.105.245501 |
| Alternate Journal | Phys. Rev. Lett. |
