Crystal Research and Technology
Copyright © 2014 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
- Characterization of bismuth germanate crystals grown by EFG method
Evgeny Galenin, Vyacheslav Baumer, Iaroslav Gerasymov, Sergii Tkachenko and Oleg Sidletskiy
Article first published online: 22 JAN 2015 | DOI: 10.1002/crat.201400237
This work is devoted to comparison of properties of bismuth germanate scintillation crystals grown by EFG and Czochralski methods. Growth of crystals with the prescribed shape by EFG provides the reduction of material losses at crystal machining. Scintillation properties of EFG grown crystals are similar to those of Czochralski grown crystals with by 2,5 times lower growth rate. Photochromic effect after UV-irradiation is manifested much weaker in EFG grown crystals compared to Czochralksi grown crystals.
- Tips and traps on crystal twinning: how to fully describe your twin
Article first published online: 19 JAN 2015 | DOI: 10.1002/crat.201400422
Derivation of the symmetry of the (011) twin in cassiterite in stereographic projection. H1 and H2 are the symmetry elements of the 4/mmm point group along the a axis for the two individuals, the red line is the twin plane, H* is the intersection group, K is the twin point group obtained as extension of H* by the twin plane.
- Effect of pH value on the growth morphology of KH2PO4 crystal grown in defined crystallographic direction
Fafu Liu, Zhang Lisong, Guangwei Yu and Xun Sun
Article first published online: 14 JAN 2015 | DOI: 10.1002/crat.201400304
In this paper, we observed the morphologies of (100) faces of KDP crystals which grew in solutions with different pH values. 2D nucleuses appeared on the terrace of growth steps when pH value down to 2.8 and 3.2 at supersaturation of 0.04, while pH value down to 2.4, only 2D nucleation control the growth. Therefore, the pH value can change the growth mechanism of KDP crystals.
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- Impact of malonic acid on the segregation of glycine polymorphs – Analytical assisted molecular approach
K. Renuka Devi and K. Srinivasan
Article first published online: 12 JAN 2015 | DOI: 10.1002/crat.201400400
Tuning of merohedral twinning in γ glycine by the additive concentration is revealed. Nucleation of γ has been observed at the critical concentration of additive and this occurs by the complete changeover of self-charge compensation by induced charge compensation in the solution. The happenings at the molecular level due to this nucleation changeover from 100% α to 100% γ have been well elucidated by the CNT based analytical approach.