Abstract
Разработаны люминесцентные алмазные композиты c интегрированными наночастицами β-NaGdF4:Eu, обладающие высокоинтенсивной узкополосной рентгенолюминесценцией на длине волны 612 нм. Отмечена концентрационная зависимость интенсивности рентгенолюминесценции от содержания частиц. Использование нанопорошков β-NaGdF4:Eu позволило получить интенсивную рентгенолюминесценцию с более высоким соотношением сигнал/шум, нежели было достигнуто ранее.
 
 Работа выполнена при финансовой поддержке гранта РФФИ № 16-29-11784-офи.
 Результаты получены с использованием оборудования центров коллективного пользования ИОФ РАН и ИОНХ РАН.
Highlights
The intensity of the induced electric dipole transition of 5D0–7F2 with respect to the intensity of the magnetic dipole transition of 5D0–7F1 was much larger than in the initial powder. This was indicated about a decrease in the local symmetry of the Eu3+ ions environment in the composite
The positions and intensities of individual lines in the 5D0–7F2 transition had changed markedly in the composite, in particular, the most intense line of this transition has shifted from 616 to 612 nm. This was indicated as a change in the structure of NaGdF4: Eu upon composite production
X-ray luminescence spectra of a composite with different amounts of dispersed droplets were showed that the sample with 3 droplets of dispersion with a total concentration of applied particles of 96 mg/ml was exhibited the most intense luminescence
Summary
The ratio of line intensities between the 5D0–7F1 and 5D0–7F2 transitions has changed. The intensity of the induced electric dipole transition of 5D0–7F2 with respect to the intensity of the magnetic dipole transition of 5D0–7F1 was much larger than in the initial powder.
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