I face a problem while grow an organic single crystal by solution growth, that the crystal are high quality with perfect morphology, but part of the crystal contains some inclusions (like pyramid shape). It couldnt reduced after a repeated recrystallization (as shown in attached file). could you suggest the possible solutions?
Thiru,
is the crystal precipitation dependent on the ph, the cation or anion concentration in the solution in which you precipitate? If you obtain pyramidic crystals under any of the varied conditions, this is the condition under which you may be able to grow pyramids on the 'mother crystal'. See:
Ingo H. Leubner, ‘Precision Crystallization’ – Theory and Practice of Controlling Crystal Size; CRCpress 2009
For free viewing go to: http://www.CRCpress.com , search under ‘author’, using my name, Ingo Leubner
look under 'morphology' and the AgBr example for an example
If you want more information, it is necessary to have your crystal composition.
Dear Ingo H Leubner thanks for your response. Could you please send me the soft copy of that book. I couldnt able to download this. Its very useful to improve myself in the field of crystal growth.
I saw one BNA single crystal by solution growth technique. I face the same problem for my crystal also. Kindly go through the attachment.
Explain the reason for inclusion present in the BNA crystal. Is it possible to control or prevent the inclusion present in the crystal.
Hello Thiru,
I did not know that you could not down-load from CRCpress. I have only one copy of the book left which I am using for my consulting. I am hoping that you will be able to convince someone to buy i for the library or the department.
This is the only book that you need, since it exceeds all prior books and contains many ways to control crystallization that has never been mentioned in prior books. Also, the demonstration of all effects with experiments has not been shown before.
P.S. Maybe, you could copy and paste some pages from CRC Press.
Note: the information that I recommended starts at page 101 'Recrystallization'.
PS, I notice that you are from Madras (Chennai). Is Thiru an appropriate shortening of your name? Or Karu?
Ingo
Thanks for your kind reply. My full name is Thirupugalmani its not an short form of my name.
I could not succeed in downloading you file; nevertheless I suppose that you have a sector (within the crystal) in which there is an accumulation of 3D defects. Isn't it?
Two questions ?
-i) what is the hydrodynamic regime in the growth solution? Is it stagnant or stirred ?
-ii) what's about the method you used for crystallizing your single crystals? In other words, in which way the supersaturation is obtained?
I'll wait for more information and then I' ll be able to help you.
All the best !
Dino
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