scholarly journals Dielectric and Optical Characterization of Boron Doped Ammonium Dihydrogen Phosphate

2013 ◽  
Vol 03 (01) ◽  
pp. 5-11 ◽  
Author(s):  
Delci Zion ◽  
Shyamala Devarajan ◽  
Thayumanavan Arunachalam
Keyword(s):  
Optical Characterization ◽  
Dihydrogen Phosphate ◽  
Ammonium Dihydrogen Phosphate ◽  
Boron Doped

Growth and Characterization of Ammonium Dihydrogen Phosphate (ADP) Doped with H3BO3 Crystals Grown by Slow Evaporation Method

2016 ◽  
Vol 675-676 ◽  
pp. 573-576 ◽  
Author(s):  
Pratya Thongpanit ◽  
Weerapong Chewpraditkul ◽  
Nakarin Pattanaboonmee
Keyword(s):  
Boric Acid ◽  
Temperature Stability ◽  
Hardness Measurement ◽  
Dihydrogen Phosphate ◽  
Ammonium Dihydrogen Phosphate ◽  
Slow Evaporation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Evaporation Method

Ammonium dihydrogen phosphate (ADP) crystals is very interesting due to its nonlinear optical property. This study investigated on improving of material for academic use by adding boric acid to modify ADP crystals. Slow evaporation method in aqueous solutions of pure ADP and ADP doped with three concentrations of H3BO3 as 0.1, 1.0, 5.0 %wt were studied. The grown crystals were confirmed tetragonal structure by powder X-ray diffraction studies. The FTIR spectrum analysis presented various functional groups of boron in three conditions of doped ADP. TGA study was comfirned the temperature stability at 220 °C for both pure and doped ADP crytals. The machanical stress was analyzed by Vicker’s hardness measurement. The results of this analysis showed boric acid doped 1.0 %wt had superior machanical stress from 10 to 75 grams. ADP doped with boric acid at 1.0 %wt was accepted in all test properties.

Preliminary Studies on the Characterization of Solution-Grown ADP Crystals

1964 ◽  
Vol 8 ◽  
pp. 315-324 ◽  
Author(s):  
Richard D. Deslattes ◽  
John L. Torgesen ◽  
Boris Paretzkin ◽  
Avery T. Horton
Keyword(s):  
Single Crystals ◽  
Bulk Crystal ◽  
Chemical Polishing ◽  
Dihydrogen Phosphate ◽  
Ammonium Dihydrogen Phosphate ◽  
Intrinsic Properties ◽  
Double Crystal ◽  
Strain Fields ◽  
Polishing Procedures

AbstractLarge single crystals of ammonium dihydrogen phosphate (ADP) have been grown from solutions of reagent grade materials by means of precisely controlled temperature programs. We have studied the perfection of these crystals by means of double-crystal rocking curves and diffraction topographs. In the course of this study, effects associated with various techniques of sectioning and polishing specimens from these crystals were examined. A combination of string sawing and chemical polishing procedures produced specimens exhibiting the best diffraction characteristics. Results obtained from surfaces so prepared are tentatively taken as being characteristic of the bulk crystal and may be interpreted in terms of longrange strain fields and imaging of both emergent and nonemergent dislocations. In some specimens, regions of 1 cm2 or more have been found to be free of defect images and to have uniform reflectance.The perfection of some specimen pairs and the intrinsic properties of certain reflections suggest their possible application to spectroscopic problems. Some crystal pairs cut parallel to (101) planes have exhibited physical resolving powers of 104 at 8.3 Å; others cut for the 600 reflection have given 4 x 105 at 1,5 Å, These crystals deteriorate on exposure to moist laboratory air and preservation techniques had to be employed.

Electrical and Optical Characterization of p-Type Boron-Doped 6H-SiC Bulk Crystals

2003 ◽  
Vol 433-436 ◽  
pp. 337-340 ◽  
Author(s):  
Matthias Bickermann ◽  
Roland Weingärtner ◽  
Z.G. Herro ◽  
Dieter Hofmann ◽  
Ulrike Künecke ◽  
...  
Keyword(s):  
Optical Characterization ◽  
Bulk Crystals ◽  
Boron Doped ◽  
P Type

Electrical and optical characterization of boron-doped (111) homoepitaxial diamond films

2005 ◽  
Vol 14 (11-12) ◽  
pp. 1964-1968 ◽  
Author(s):  
Sung-Gi Ri ◽  
Hiromitsu Kato ◽  
Masahiko Ogura ◽  
Hideyuki Watanabe ◽  
Toshiharu Makino ◽  
...  
Keyword(s):  
Diamond Films ◽  
Optical Characterization ◽  
Boron Doped

Electrical and Optical Characterization of Boron-doped Microcrystalline SiH Films Prepared by ECR-CVD for Solar Cell

2014 ◽  
Vol 60 (1) ◽  
pp. 557-563
Author(s):  
Y. L. Hsieh ◽  
T. T. Li ◽  
L. C. Hu ◽  
Y. H. Chu ◽  
C. C. Lee ◽  
...  
Keyword(s):  
Solar Cell ◽  
Optical Characterization ◽  
Boron Doped

Characterization of ammonium dihydrogen phosphate crystals for soft X-ray optics of the Beam Expander Testing X-ray facility (BEaTriX)

2019 ◽  
Vol 52 (3) ◽  
pp. 599-604 ◽  
Author(s):  
Claudio Ferrari ◽  
Sara Beretta ◽  
Bianca Salmaso ◽  
Giovanni Pareschi ◽  
Gianpiero Tagliaferri ◽  
...  
Keyword(s):  
Dihydrogen Phosphate ◽  
Ammonium Dihydrogen Phosphate ◽  
Wide Beam ◽  
X Ray ◽  
Large Size ◽  
Beam Expander ◽  
New Type ◽  
Under Construction ◽  
Acceptance Tests

A new type of X-ray facility, the Beam Expander Testing X-ray facility (BEaTriX), has been designed and is now under construction at INAF–Osservatorio Astronomico di Brera (Merate, Italy) to perform the acceptance tests of the silicon pore optics modules of the ATHENA X-ray telescope. Crystals of high perfection and large dimensions are needed in order to obtain a wide beam (20 × 6 cm) with an X-ray divergence of <0.5′′ and an X-ray energy purity ΔE/E < 10−5. To generate X-ray diffracted beams at an X-ray energy of 1.49 keV, ammonium dihydrogen phosphate (ADP) crystals have been considered among other possible choices, because of their reported crystal quality and because they can be grown at sufficiently large size at a reasonable price. In the present paper, the results of the characterization of crystalline quality and lattice planarity of a 20 × 20 × 2 mm ADP sample are reported.

Structural and optical characterization of sol–gel derived boron doped Fe2O3 nanostructured films

2012 ◽  
Vol 62 (3) ◽  
pp. 397-403 ◽  
Author(s):  
C. Aydın ◽  
Sh. A. Mansour ◽  
Z. A. Alahmed ◽  
F. Yakuphanoglu
Keyword(s):  
Sol Gel ◽  
Optical Characterization ◽  
Nanostructured Films ◽  
Boron Doped

The optical characterization of boron-doped MPCVD diamond films

1997 ◽  
Vol 6 (8) ◽  
pp. 940-943 ◽  
Author(s):  
H. Opyrchal ◽  
Ken K. Chin ◽  
Erhard Kohn ◽  
Wolfgang Ebert
Keyword(s):  
Diamond Films ◽  
Optical Characterization ◽  
Boron Doped
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