I have grown single crystals from solution which is obtained within five days (fast growth) and contains vacancy defects. Hence growth solution is higher surface energy and high supersaturation. Here do my crystals have a low displacement rate or a high displacement rate? How to explain in this situation?
Please provide me clear idea about this.
The crystal growth from solutions have number of particular features as a formation of relief of a grown crystal face. To grow high quality crystals with minimum of defects one has to control this relief optically by the level of supersaturation through temperature and local alimentation through crystal rotation scheme. Your objective is to get rid of formation of few centers of growth on a facet which will generate an intereference through the formation of valleys. It also depends on the quality of your seeding crystal. You can find a lot of publically available literature for KDP crystal growth from aquatic solution. The optimal growth rates from solutions is often limiting to ~10 mm/day.
Dear Katerine,
I have done HRXRD study for my single crystal and please find the attachment based on HRXRD only i can mention here its vacancy defects
Dear A. Szczerbakow,
A word displacement rate i found from Elementary of Crystal Growth by K.Sangwal Book. In that book they mentioned about F faces and S faces. He wrote S face usually appear only when their displacement rate is low. its usually appears at high supersaturation. here i have attached my optical microscope image for you kind perusal.
A displacement rate is simply a linear rate of a crystal face propagation during growth. If you take the central distance (from the seed to the surface) of a certain face and divide it by the total time of crystal growth you will get the average displacement rate.
Typically, the displacement rate is not a constant during growth. It fluctuates...
Dear I. Kasatkin,
Thank you for your kind and fruitful answer regarding my question.
Growth displacement rate in a single crystal is the shortest time taken for the growth of the single crystal.
- Badges
- Science topic
- Similar topics
- Linguistics
- Philology
- Classical Philology
- Manuscripts