Effect of neodymium on dislocation velocity in CaF2
- 1 June 1974
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 45 (6), 2382-2388
- https://doi.org/10.1063/1.1663601
Abstract
The effects of neodymium‐dopant additions on the behavior of dislocations in calcium fluoride were studied. Velocity measurements were carried out on edge and screw dislocations as a function of stress, temperature, and dopant content. It was observed that screw dislocations can be the more mobile type in CaF2, depending on the stress and concentration of aliovalent impurities present. The mobility of screw dislocations relative to edges was reduced significantly by 70 ppm Nd3+. An apparent transition in the drag mechanism from extrinsic to intrinsic was observed for edge dislocations.Keywords
This publication has 6 references indexed in Scilit:
- Dislocation Etch Pits and Evidence of Room-Temperature Microplasticity in SrF2 Single CrystalsJournal of Applied Physics, 1970
- Geometric Analysis of Charged Dislocations in the Fluorite StructurePhysica Status Solidi (b), 1970
- Dislocations in the fluorite structurePhilosophical Magazine, 1969
- Mobility of Edge Dislocations in Single-Crystal Calcium FluorideJournal of Applied Physics, 1968
- EFFECT OF DIVALENT METAL IMPURITY DISTRIBUTION, QUENCHING RATE, AND ANNEALING TEMPERATURE ON FLOW STRESS IN IONIC CRYSTALS (NaCl, LiF)Applied Physics Letters, 1963
- Solution hardening by tetragonal dist ortions: Application to irradiation hardening in F.C.C. crystalsActa Metallurgica, 1962