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The bulk crystal of LiSrBO3 (8.39 g) with a size of 21mm×20mm×15mm was grown by high temperature solution growth method. The relationship between growth habit and crystal structure was discussed. The transmission spectrum shows an UV absorption edge at about 300 nm. The melting temperature of this crystal was determined to be 942 ℃ by DTA-TG measurement. The band structure of the LiSrBO3 crystal was studied by means of the first principle method. An indirect band gap was found to be about 4.0 eV,and a low dielectric constant was estimated to be about 1.9 in terms of theoretical results. 相似文献
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"电力电子技术"课程是理论性和实践性很强的一门课程,是培养自动化及相关电类学生核心素养的非常好的课程,可以从教学内容、教学方法和教学模式上进行改革,将信息化技术融合到教学中,发挥信息化技术的优势,解决课题教学任务繁重、死板等问题,可以开阔学生视野,将学生培养成二十一世纪卓越的工程师. 相似文献
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