Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Shouguo Guo"'
Publikováno v:
Crystals, Vol 12, Iss 9, p 1257 (2022)
The color of yellow sapphire from Africa characterized by high iron content and low levels of other transition metal elements was changed from yellow to grayish-blue after high-temperature reduction annealing. Before reduction annealing, the optical
Externí odkaz:
https://doaj.org/article/7cb9d506390640208e7638435ba78644
Publikováno v:
Journal of Alloys and Compounds. 768:1058-1063
A new optical absorption band centered at 356 nm was observed in Co/Ti co-doped synthetic corundum in ultraviolet (UV) region while it doesn't exist in corundum single doped with cobalt or titanium. It is featured with high optical absorption intensi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7392ae928a81b3b69bb4b09643f181ca
https://doi.org/10.1016/j.jallcom.2018.07.314
https://doi.org/10.1016/j.jallcom.2018.07.314
Publikováno v:
Optical Materials. 105:109881
In the optical absorption spectra of Ti:Al2O3 crystal doped with higher concentration of titanium and annealed with hydrogen, in addition to the main absorption band of T i A l 3 + (490 nm, 540 nm), a small absorption band of 390 nm and a concomitant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13cc07b990e72ee52cb0b0bb68669243
https://doi.org/10.1016/j.optmat.2020.109881
https://doi.org/10.1016/j.optmat.2020.109881
Publikováno v:
Spectroscopy Letters. 42:129-135
The technique of micro-Raman spectroscopy has the advantages of being nondestructive, high speed, high accuracy and also can be used for finite-precision analysis in combination with microscopy. In this paper, bleached and filled jadeite-jade and fil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa3a94aa2de02ad90c1dab3b5b05d504
https://doi.org/10.1080/00387010902729112
https://doi.org/10.1080/00387010902729112
Publikováno v:
Chinese Optics Letters. 14:053001
A light purplish red sapphire is heat treated in an airtight crucible. The sample changes little in color after receiving heat treatment at 1100°C, but turns to light blue and blue after being treated at 1200°C and 1300°C, respectively. Before hea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87e7bf45d7f77c9188022306a2642b20
https://doi.org/10.3788/col201614.053001
https://doi.org/10.3788/col201614.053001
Publikováno v:
Chinese Optics Letters. 9:083001
Tourmaline is an important functional and gem material. The current study examines pink, green, and brownish-green tourmalines from Altay deposit. Based on X-ray fluorescence (XRF) quantitative analyses and ultrariolet-visible-near-infrared (UV-VIS-N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b1d90aac941241b7e35b63718c0d5a6
https://doi.org/10.3788/col201109.083001
https://doi.org/10.3788/col201109.083001