| Autor: |
Klap, G. J., Wubbenhorst, M., Jansen, J. C., Koningsveld, H. van, Bekkum, H. van, Turnhout, J. van |
| Zdroj: |
Chemistry of Materials; December 20, 1999, Vol. 11 Issue: 12 p3497-3503, 7p |
| Abstrakt: |
Scanning pyroelectric microscopy on large crystals reveals the three-dimensional polarization distribution in AlPO4-5 crystals. AlPO4-5 probably grows in such a way that one particular absolute configuration is formed. In general twinned crystals are formed. The twin domains exhibit an opposite polarization. A single domain is found when crystals are grown from a substrate. In some cases the crystals show a more complex domain structure, which can be attributed to specific growth conditions. From the polarization distribution the history of the crystal growth can be retrieved. A mechanism for the adsorption of p-nitroaniline molecules is proposed on the basis of the polarization distribution in AlPO4-5 crystals and earlier observed preferential orientation of this guest molecule in the host structure. |
| Databáze: |
Supplemental Index |
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