Using the metastable zone range for guidance,DAST crystal was grown by the seedsolution cooling method.We got two larger size of DAST crystals.There were strong (004) and (006) surfaces characteristic peaks in the XRD pattern.In the PL spectra, the peak at the 573.5 nm was expected to occur from the dimethylamino group (N(CH3)2) present in DAST crystal. There was the electron transfer characteristic peak at 601.6 nm,the electron transfer occurred between two molecules through the ionic interaction between the dimethylamino and sulfonate groups.The characteristic peak generated by the olefinic double bond was at 647 nm.Through XRD and PL spectral test, it was confirmed that the prepared crystal was DAST crystal.The Vivtorinox hardness test of DAST crystal was carried out,and the surface morphology of DAST crystal was observed by AFM and the differential interference microscope.
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武聪, 孟大磊, 庞子博, 徐永宽, 程红娟. DAST晶体的生长与表征[J].压电与声光,2017,39(5):722-724. WU Cong, MENG Dalei, PANG Zibo, XU Yongkuan, CHENG Hongjuan. Growth and Characterization of DAST Crystal[J]. PIEZOELECTRICS AND ACOUSTOOPTICS