Growth of α-iodic acid crystals from aqueous solution

Parker, Sidney G.; Pinnell, Jack E.

doi:10.1016/0022-0248(72)90297-7

Cited by 5 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The seed erystal as well as the teflon holder were fixed in position with siliea-rubber glue (Rhone-poulene-chimie fine "CAF 4" rhodosil silicones were used). The size of the seed erystals was approximately 20 • 20 • 4 mm, two of the surfaees were parallel with the (110) other two surfaees were perpendicular to the " c " axis (notation according to [9]). …”

Section: (A) Growth Equipmentmentioning

confidence: 99%

“…According to KAYE and LABY [7] 100 g water dissolves 286 g st 0 ~ and 472 g HIO 3 at 80 ~ Accordingly, ir is quite obvious that the best and simplest way of obtaining large single crystals should 8 A~.a Physieo A~ S 91 H.rvjoriam 49,1980 be to grow them from aqueous solutions. Though the earlier papers refer to this method of growth [1, 2,5,8,9], with the exeeption of one paper, no details of the growth technology ate given. PARKEn and PIr~NEL [9] grew 60 g single crystals with the evaporation method.…”

Section: Introductionmentioning

confidence: 99%

“…Though the earlier papers refer to this method of growth [1, 2,5,8,9], with the exeeption of one paper, no details of the growth technology ate given. PARKEn and PIr~NEL [9] grew 60 g single crystals with the evaporation method. The tate of evaporation has been regulated by the temperatue of growth, and the number and size of the openings through which the water vapour evaporated.…”

Section: Introductionmentioning

confidence: 99%

“…With this method it became possible to avoid craek formation due to mixing, and grow larger crystals than with the method referred to in [9].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Growth of alpha-iodic acid crystals from aqueous solution

Vannay¹,

Hartmann

1980

Acta Physica

View full text Add to dashboard Cite

show abstract

Section: (A) Growth Equipmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…With this method it became possible to avoid craek formation due to mixing, and grow larger crystals than with the method referred to in [9].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Growth of alpha-iodic acid crystals from aqueous solution

Vannay¹,

Hartmann

1980

Acta Physica

View full text Add to dashboard Cite

show abstract

One possible method of the automatization of growing crystals by evaporation

Vannay¹

1980

Cryst Res and Technol

View full text Add to dashboard Cite

The quality requirements of the single crystals to be used for technical purposes are exceedingly high. In order to satisfy the requirements with crystals that are grown from the solution the methods applying constant growth temperatures seem to be more promising than changing the temperature (BELOUET et al.), since the former readily avoids the imperfections created in the as grown crystals due to the temperature change. Moreover, the constant temperature methods might be also justified by the following considerations:-the shape of the solubility curve of the material to be grown (the weak sc. strong temperature dependence of the solubility);-the fact that from some materials good quality crystals can be grown only below a well defined temperature (as e. g. in the case of DKDP).One way to realize the constant-temperature method is the evaporation process which attains the supersaturation necessary for the growth by evaporating the solvent.The simplest method to accomplish the desired evaporation consists of applying bores on the lid of the growing vessel (e. g. PARKER, PeJNELL). However, one setback of this easily realizable technique is the dependence of the rate of evaporationand consequently the rate of crystal growth -on the parameters of the environment (temperature, air motion, humidity etc.). The evaporation process may be made more controllable by growing the crystal in a closed vessel. If the growth takes place at a temperature higher than the temperature of the environment the lid of the vessel is cooler than the solutian, consequently the solvent begins to condensate here. With this method the lid is usually moulded into a conical shape, With this construction one attains the condensate trickling down the lid and being collected in a small pot. The solvent is then extracted from this pot.Since rather small amounts of the solvent are to be extracted continuously working pumps are usually of not much use, and the solvent extraction is better carried out with a syringe several times a day. With this method the condensation is usually strong, if the crystal grows at an elevated temperature or in a cooler environment, when the solvent extracted from the collecting pot will be replaced pretty fast. This results in an increase of the supersaturation. When -on the other hand -the pot becomes filled the condensing and trickling solvent gets back into the solution decreasing its supersaturation. This process leads to fluctuations of the growth rate. However, these fluctuations can be avoided by a proper selection of the growth temperature which means that a given material grows optimally only at a given temperature characteristic for this material, special equipment has been developed in our laboratory which enables a quasi continuous and automated solvent extraction. The extraction of the solvent from the collecting pot is realized with a syphon equipped with a magnetic valve. Extraction takes place only when the electronically operated magnetic valve controlling the extracted fluid quantity opens.which thus e...

show abstract

Second harmonic conical refraction

Schell

Bloembergen

1977

Optics Communications

View full text Add to dashboard Cite

Growth of α-iodic acid crystals from aqueous solution

Cited by 5 publications

References 2 publications

Growth of alpha-iodic acid crystals from aqueous solution

Growth of alpha-iodic acid crystals from aqueous solution

One possible method of the automatization of growing crystals by evaporation

Second harmonic conical refraction

Contact Info

Product

Resources

About