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
50 Years of Crystal Research & Technology
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Recently Published Articles
- Dislocation formation in heavily As-doped Czochralski grown silicon
L. Stockmeier, L. Lehmann, A. Miller, C. Reimann and J. Friedrich
Version of Record online: 24 APR 2017 | DOI: 10.1002/crat.201600373
During growth of heavily n-type doped silicon crystals by the Czochralski method dislocation formation occurs frequently. The dislocation formation causes the loss of the growth ridges. Up to now, it is not clear where and why the dislocations form. Therefore, heavily As-doped crystals were studied by means of X-ray tomography and synchrotron X-ray tomography. By this it was possible to localize the origin of the dislocations.
- Synthesis of aragonite CaCO3 nanocrystals by reactive crystallization in a high shear mixer
Chao Yang, Jinli Zhang, Wei Li, Shanshan Shang and Cuili Guo
Version of Record online: 21 APR 2017 | DOI: 10.1002/crat.201700002
Aragonite CaCO3 nanoparticles were prepared in an in-line high shear mixer (HSM)-aided crystallizer involving the gas-liquid-solid multiphase reactive crystallization between CO2 gas and the aqueous slurry of Ca(OH)2. High crystalline purity aragonite CaCO3 with the average width of 50 nm was prepared. Such HSM-aided crystallizer is superior to adjust the micro-mixing environment in the multiphase reactive crystallization, beneficial to the formation of metastable crystal CaCO3.
- Modulation mechanism of growth atmosphere on composition and phase transition behavior in barium calcium titanate crystal
Tianxiang Xu, Yicheng Wang, Dazhi Lu, Zhongben Pan, Haohai Yu, Huaijin Zhang and Jiyang Wang
Version of Record online: 21 APR 2017 | DOI: 10.1002/crat.201700009
The growth atmosphere modulation effect on elemental composition of Ba1-xCaxTiO3 crystal was investigated. Crystals near with the two critical compositions were obtained successfully from the same melt under N2 and air atmospheres. Crystal structural properties and phase transition behaviors of the as-grown crystals have been studied and the influence by growth atmospheres were discussed in detail.
- Solution-mediated polymorphic transformation of amorphous form to Form I of olmesartan medoxomil in methanol-water mixture solvents
Ming-Hui Qi, Wan-Shang Chen, Hui Zhou, Jing-Yan Chen and Guo-Bin Ren
Version of Record online: 18 APR 2017 | DOI: 10.1002/crat.201700038
A mechanism for solution-mediated polymorphic transformation of an amorphous form to Form I of olmesartan medoxomil in methanol-water mixture solvents was studied through an on-line instrument and off-line methods. The effects of water content, temperature and additives on the transformation process were also discussed.
- Facile fabrication of rod-shaped Zn2GeO4 nanocrystals as photocatalyst for hydrogen production
Jun Liang, Yao Chai and Li Li
Version of Record online: 18 APR 2017 | DOI: 10.1002/crat.201700022
The enhancement of photocatalytic activity over prismatic Zn2GeO4 nanorods is a synergetic effect of beneficial surface structures, superb crystal quality, special surface area and 1-D nanostructure with high aspect ratios in photocatalytic hydrogen evolution from biomass/water solution under UV-light irradiation.