Academic Journal
Influence of Ultrahigh Dilution Treatment of the Charge on the Growth and Spectroscopic Properties of Nd:MgMoO 4 Potential Laser Crystal
| العنوان: | Influence of Ultrahigh Dilution Treatment of the Charge on the Growth and Spectroscopic Properties of Nd:MgMoO 4 Potential Laser Crystal |
|---|---|
| المؤلفون: | Kirill A. Subbotin, Yana S. Didenko, Anatolii I. Titov, Denis A. Lis, Sergei K. Pavlov, Pavel A. Volkov, Kristina I. Runina, Valerii V. Voronov, Elena V. Chernova, Olga N. Lis, Kristina V. Kuleshova, Yulia I. Zimina |
| المصدر: | Crystals, Vol 14, Iss 1, p 100 (2024) |
| بيانات النشر: | MDPI AG |
| سنة النشر: | 2024 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | molybdates, neodymium ion, magnesium molybdate, crystal growth, ultrahigh dilution technology, luminescence, Crystallography, QD901-999 |
| الوصف: | The influence of the charge treatment by ultrahigh dilution (UHD) technology on oxide single crystals grown by the Czochralski technique was studied for monoclinic MgMoO 4 crystals doped by 1 at. % of Nd 3+ ions. The series of 10 Nd:MgMoO 4 crystals was grown from the charges that were subjected to UHD treatment, as well as from the charges treated with two types of control or with no special treatment at all. The grown crystals were studied by X-ray powder diffraction analysis, inductively coupled plasma atomic emission spectroscopy, mass-spectrometry, optical absorption, emission spectroscopy and luminescence kinetic analysis. We found that: (i) wetting of MgO + MoO 3 mixture by a water-ethanol solution before calcining leads to some enrichment of the mixture with MoO 3 , whereas the wetting of the charge after the calcining leads to some enrichment of it with MgO; (ii) congruent melting composition of MgMoO 4 crystal is in the field of some MoO 3 excess; (iii) the solid-phase solubility of the excess MoO 3 in MgMoO 4 probably does not depend on temperature, whereas the solid-phase solubility of the excess MgO in MgMoO 4 crystal depends on temperature. We suggest that the corresponding solidus line passes through the range of retrograde solubility; (iv) the crystals grown within this range are characterized by the enhanced Nd 3+ segregation coefficient between the crystal and the melt (approximately 0.006 versus 0.004); (v) unit cell parameters of MgMoO 4 crystal with the excess of MoO 3 are larger than those of the crystal of the stoichiometric composition and of the crystal with the excess of MgO; (vi) the shapes of the optical absorption and luminescence spectra of Nd:MgMoO 4 crystal do not depend on the charge treatment; (vii) luminescence decay kinetics are single-exponential for all the studied crystals, the luminescence decay time being different for the crystals grown from the charges that underwent different types of treatment; (viii) the luminescence intensity of Nd:MgMoO 4 crystal grown from the ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2073-4352 |
| Relation: | https://www.mdpi.com/2073-4352/14/1/100; https://doaj.org/toc/2073-4352; https://doaj.org/article/1259ce3354a24b498dc035381493c35d |
| DOI: | 10.3390/cryst14010100 |
| الاتاحة: | https://doi.org/10.3390/cryst14010100 https://doaj.org/article/1259ce3354a24b498dc035381493c35d |
| رقم الانضمام: | edsbas.141A77D8 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 20734352 |
|---|---|
| DOI: | 10.3390/cryst14010100 |