Crystal Research and Technology
© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Editor: Wolfgang Neumann (Editor-in-Chief), Klaus-W. Benz (Consulting Editor)
Online ISSN: 1521-4079
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Recently Published Articles
- Facile synthesis of low dimensional CuO nanostructures and their gas sensing applications
S. Bhuvaneshwari and N. Gopalakrishnan
Article first published online: 21 JAN 2016 | DOI: 10.1002/crat.201500243
Morphology controlled Cr doped CuO nanostructures were synthesized by hydrothermal method. Morphological evolution from rod-like (pure) to sheet (4 at.% Cr) and boat-like (8 at.% Cr) structures were observed. The 8 at. % Cr doped CuO nano-boats showed enhanced gas sensitivity owing to their larger surface area.
- Growth of boron nitride films on w-AlN (0001), 4° off-cut 4H-SiC (0001), W (110) and Cr (110) substrates by Chemical Vapor Deposition
Nicolas Coudurier, Mikhail Chubarov, Raphaël Boichot, Fréderic Mercier, Elisabeth Blanquet, Roman Reboud, Sabine Lay, Alexandre Crisci, Stéphane Coindeau, Thierry Encinas and Michel Pons
Article first published online: 21 JAN 2016 | DOI: 10.1002/crat.201500284
This study presents growth of boron nitride on w-AlN (0001), 4° off-cut 4H-SiC (0001), W (110) and Cr (110) substrates by Chemical Vapor Deposition. We obtained t-BN with interplanar distance close to the one of h-BN. We interpret this result to be an effect of too high supersaturation in the gas phase (too high growth rate). The necessity for the implementation of pulsed-CVD and low growth rate to form the h-BN phase is suggested and discussed.
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- Precipitation of sparingly soluble salts in packed sandbeds in the presence of miscible and immiscible organic substances
Efstathia I. Pavlakou, Varvara Sygouni, Maria G. Lioliou, Petros G. Koutsoukos and Christakis A. Paraskeva
Article first published online: 13 JAN 2016 | DOI: 10.1002/crat.201500267
CaCO3 precipitation experiments were performed in sandbeds using miscible and immiscible organic substances. Three types of experiments were performed: a) using aqueous solutions b) using aqueous solutions in pre-saturated sandbeds filled with oleic immiscible phase c) using aqueous solutions containing MEG glycol (MEG). Results showed that oil–water interfaces accelerated crystal growth at the inlet of the sandbed. Maximum in-depth sandbed consolidation was obtained with the solutions containing MEG.
- A study of the growth process of Co3O4 microcrystals synthesized via a hydrothermal method
Xu Hongyan, Diwu Jiangtao, Hai Zhenyin, Gao Libo, Zhang Qiang, Tang Jun, Zhang Binzhen and Xue Chenyang
Article first published online: 12 JAN 2016 | DOI: 10.1002/crat.201500198
Co3O4 microcrystals are synthesized by hydrothermal method. As the thermal-treatment time increases from 2 h to 24 h, the microcrystal shape changes from hedgehog sphere-like to lamellar, cubic-like and finally perfect cubic. Then, more hydrothermal treatment time only leads to the growth and aggregation of Co3O4 grains. The cubic Co3O4 microcrystals in uniform size (∼6 μm) are synthesized via a 12-h thermal treatment.2