Growth of an 8-hydroxyquinoline single crystal by a modified Czochralski growth technique, and crystal characterization†,CrystEngComm

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Growth of an 8-hydroxyquinoline single crystal by a modified Czochralski growth technique, and crystal characterization†
CrystEngComm ( IF 2.6 ) Pub Date : 2018-01-11 00:00:00 , DOI: 10.1039/c7ce01857f
Sonu Kumar _{1,

2,

3,

4,

5} , Binay Kumar _{1,

2,

3,

4,

5}

Affiliation

A novel modified Czochralski crystal growth technique for low temperature was designed with a closed chamber which allowed for variations in the environment. A large sized single crystal of 8-hydroxyquinoline with diameter 1.2 cm and length 7.4 cm was successfully grown in an argon atmosphere. Structural parameters were determined by the powder X-ray diffraction method. The functional groups were confirmed by Fourier transform infrared spectroscopy. Thermal transitions at various temperatures were measured by thermogravimetric/differential thermal analyses. The dielectric properties of the grown crystal were studied with variations of temperature and frequency. The grown crystals were found to be piezoelectric as confirmed by the d₃₃ coefficient of 5 pC N⁻¹. A Vickers microhardness study revealed that the grown crystal belongs to the soft type single crystals with a Meyer's index (n) of 1.98.

中文翻译：

通过改良的Czochralski生长技术生长8-羟基喹啉单晶和晶体表征†

设计了一种新颖的改良的低温Czochralski晶体生长技术，该技术具有一个封闭的腔室，该腔室允许环境变化。在氩气中成功生长出直径为1.2厘米，长度为7.4厘米的8-羟基喹啉大型单晶。结构参数通过粉末X射线衍射法确定。通过傅立叶变换红外光谱法确认了官能团。通过热重/差热分析来测量在各种温度下的热转变。研究了随温度和频率变化而生长的晶体的介电特性。如d ₃₃系数5 pC N ^-1所证实，发现生长的晶体是压电的。维氏显微硬度研究表明，生长的晶体属于软型单晶，迈耶指数（n）为1.98。

更新日期：2018-01-11

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