Size control and vacuum-ultraviolet fluorescence of nanosized KMgF(3) single crystals prepared using femtosecond laser pulses.
Size control and vacuum-ultraviolet fluorescence of nanosized KMgF(3) single crystals prepared using femtosecond laser pulses.
复制标题
利用飞秒激光脉冲制备的纳米级 KMgF(3) 单晶的尺寸控制和真空紫外荧光。
DOI：
10.1080/14686996.2016.1241659
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发表时间：
2016
影响因子：
5.5
通讯作者：
Yoshikawa A
中科院分区：
文献类型：
--
作者：
Muramatsu S;Yanagihara M;Asaka T;Ono S;Nagami T;Fukuda K;Suyama T;Yokota Y;Yanagida T;Yoshikawa A
采用飞秒激光脉冲干法脉冲激光烧蚀法制备了KMgF 3纳米单晶。通过透射电子显微镜（TEM）的晶体的尺寸，形状和晶体学性质进行了评价。几乎所有的颗粒都是直径小于100 nm的球形，并且它们不是高度团聚的。选区电子衍射和高分辨率TEM分析表明，颗粒是单晶。通过调节Ar环境气体压力将颗粒直径控制在宽范围内。在低气压（1和10 Pa）下，观察到相对小的颗粒（主要为10 nm或更小）具有高的数密度。随着压力的增加，平均直径增加，数密度急剧下降。在140-230 nm处观察到了紫外阴极发光，并伴有光谱蓝移和展宽。
We fabricated nanosized KMgF3 single crystals via a dry pulsed laser ablation process using femtosecond laser pulses. The sizes, shapes, and crystallographic properties of the crystals were evaluated by transmission electron microscopy (TEM). Almost all of the particles were spherical with diameters of less than 100 nm, and they were not highly agglomerated. Selected-area electron diffraction and high-resolution TEM analyses showed that the particles were single crystals. Particle diameter was controlled within a wide range by adjusting the Ar ambient gas pressure. Under low gas pressures (1 and 10 Pa), relatively small particles (primarily 10 nm or less) were observed with a high number density. With increasing pressure, the mean diameter increased and the number density drastically decreased. Vacuum-ultraviolet cathodoluminescence was observed at 140–230 nm with blue shift and broadening of spectrum.
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影响因子：
3.6
作者：
KOBAYASI, T;MROCZKOWSKI, S;BRIXNER, LH
通讯作者：
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通讯作者：
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作者：
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通讯作者：
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