Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Lyubomir, Aleksandrov"'
Autor:
Lyubomir Aleksandrov, Aneliya Yordanova, Margarita Milanova, Reni Iordanova, Peter Tzvetkov, Pavel Markov, Petia Petrova
Publikováno v:
Molecules, Vol 29, Iss 15, p 3452 (2024)
In this paper, the crystallization behavior of 50ZnO:47B2O3:3Nb2O3:0.5Eu2O3 (G-0 h) glass has been investigated in detail by DSC, XRD and TEM analysis. The luminescent properties of the resulting glass-ceramics were also investigated. By XRD and TEM
Externí odkaz:
https://doaj.org/article/3200387ee35740ae873bb1766fd6c9cb
Autor:
Aneliya Yordanova, Lyubomir Aleksandrov, Margarita Milanova, Reni Iordanova, Petia Petrova, Nikolay Nedyalkov
Publikováno v:
Molecules, Vol 29, Iss 11, p 2470 (2024)
Glasses with the compositions in mol % of 50ZnO:(50 − x)B2O3:0.5Eu2O3:xWO3, x = 0, 1, 3, 5 and 10 were obtained by applying the melt-quenching method and investigated by Raman spectroscopy, DSC analysis and photoluminescence (PL) spectroscopy. Rama
Externí odkaz:
https://doaj.org/article/855209571fd34e6688042d6ec764dbde
Autor:
Reni Iordanova, Margarita Milanova, Aneliya Yordanova, Lyubomir Aleksandrov, Nikolay Nedyalkov, Rositca Kukeva, Petia Petrova
Publikováno v:
Materials, Vol 17, Iss 6, p 1415 (2024)
The effect of the addition of Nb2O5 (up to 5 mol%) on the structure and luminescent properties of ZnO-B2O3 glass doped with 0.5 mol% (1.32 × 1022) Eu2O3 was investigated by applying infrared (IR), Raman and photoluminescence (PL) spectroscopy. Throu
Externí odkaz:
https://doaj.org/article/327005c7e031456e906a5b5b137a4b37
Autor:
Sonya Harizanova, Ivan Uzunov, Lyubomir Aleksandrov, Maria Shipochka, Ivanka Spassova, Mariya Kalapsazova
Publikováno v:
Materials, Vol 17, Iss 5, p 1016 (2024)
The key technological implementation of sodium-ion batteries is converting biomass-derived hard carbons into effective anode materials. This becomes feasible if appropriate knowledge of the relations between the structure of carbonized biomass produc
Externí odkaz:
https://doaj.org/article/9761e39b8e1744339580832a4d679feb
Autor:
Lyubomir Aleksandrov, Nadezhda Rangelova, Nevena Lazarova-Zdravkova, Nelly Georgieva, Mirela Dragnevska, Sanchi Nenkova
Publikováno v:
Materials, Vol 16, Iss 21, p 6936 (2023)
In the present study, copper modified fibreboards were prepared and their existing phase, morphology, and antibacterial behaviour were investigated. The copper content and the physical and mechanical properties of fibreboards (thickness, bending stre
Externí odkaz:
https://doaj.org/article/14f36828493542af9607da11320c5737
Autor:
Aneliya Yordanova, Margarita Milanova, Reni Iordanova, Margit Fabian, Lyubomir Aleksandrov, Petia Petrova
Publikováno v:
Materials, Vol 16, Iss 20, p 6779 (2023)
In this study, we investigated the influence of Bi2O3 and WO3 on both structure and optical properties of 50ZnO:(49 − x)B2O3:1Bi2O3:xWO3; x = 1, 5, 10 glasses doped with 0.5 mol% Eu2O3. IR spectroscopy revealed the presence of trigonal BØ3 units c
Externí odkaz:
https://doaj.org/article/79c31601f732455abace522e8acc73f4
Autor:
Nikolay Nedyalkov, Mihaela Koleva, Nadya Stankova, Rosen Nikov, Mitsuhiro Terakawa, Yasutaka Nakajima, Lyubomir Aleksandrov, Reni Iordanova
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 8, Iss 1, Pp 2454-2463 (2017)
We present results on laser-assisted formation of two- and three-dimensional structures comprised of gold nanoparticles in glass. The sample material was gold-ion-doped borosilicate glass prepared by conventional melt quenching. The nanoparticle grow
Externí odkaz:
https://doaj.org/article/28e4e092d86b4e17a37c9bb5f2c1f922
Publikováno v:
Materials Today: Proceedings. 61:1206-1211
Publikováno v:
Materials Today: Proceedings. 61:1272-1279
Homogenous and transparent glasses with nominal compositions 50ZnO:40B2O3:10WO3:xЕu3+ (x = 1 and 5), mol% were obtained by melt quenching method. The obtained glasses were characterized by X-ray diffraction (XRD), differential thermal analysis (DTA)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5f281bcfa2bdc1c064ed5208d7ec75c
https://hdl.handle.net/20.500.12641/35544
https://hdl.handle.net/20.500.12641/35544