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GROWING N-SALICYLIDENEANILINE (SA) SINGLE CRYSTAL BY PHYSICAL VAPOUR DEPOSITATION AND ITS POLARIZATION PROPERTY

ZHAO LI-ZHU SHEN MENG-YAN T. GOTO

GROWING N-SALICYLIDENEANILINE (SA) SINGLE CRYSTAL BY PHYSICAL VAPOUR DEPOSITATION AND ITS POLARIZATION PROPERTY

ZHAO LI-ZHU, SHEN MENG-YAN, T. GOTO
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  • Received Date:  27 March 2001
  • Published Online:  05 April 2001

GROWING N-SALICYLIDENEANILINE (SA) SINGLE CRYSTAL BY PHYSICAL VAPOUR DEPOSITATION AND ITS POLARIZATION PROPERTY

  • 1. (1)东北师范大学物理系,长春130024; (2)日本东北大学理学部,日本仙台980

Abstract: We have grown clean N-salicylideneaniline (SA) single crystals large enough in size by physical vapour depositaion. The photochromism of the SA single is studied by probe light at different optical polarizations At different temperatures and different polarizations,we measured the time dependence of the change of optical density in the colored crystal in the forward and backward reactions.The activation energies of the single crystal are obtained in different optical polarizations.Based on theoretical calculations,the structure configurations of the SA molecules in the colored keto form are analyzed.When an ultraviolet (UV) light is irradiated on the sample at 200 K,about 60% of the ketone form molecules are found to be in the trans-configuration and about 40% of them in the cis-configuration.

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