Single crystals of triglycine sulphate containing palladium |
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Authors: | F. Moravec J. Novotny J. Štrajblová |
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Affiliation: | (1) Institute of Radio Engineering and Electronics, Czechosl. Acad. Sci., Prague, Lumumbova 1, Praha 8, Czechoslovakia |
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Abstract: | Single crystals of TGS doped with Pd2+ have been grown from aqueous solutions using the method of temperature decrease. It was found that the relative growth rate along thec-axis is not constant through the growth process being larger by more than an order of magnitude (in medium size crystals, ca. 30 g) than in pure TGS crystals. Investigation of the domain structure revealed that in the growth pyramids ¦110¦, the crystals are poled in one direction. The internal bias field in these growth pyramids was experimentally found to be of the order of 1 kV/cm. The high internal field excludes the possibility of spontaneous depoling and makes the Pd2+-doped TGS crystals suitable for pyroelectric applications. |
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