Growth and Characterization of Doped CaF2 Crystals
نویسنده
چکیده
منابع مشابه
Luminescence Properties of Oxyfluoride Glass and Glass Ceramic Doped with Y3 + Ions
Oxyfluoride glass ceramics containing CaF2nano-crystals doped with Y3+ ions were prepared by one-step crystallization of SiO2- Al2O3- CaO- CaF2 glasses at different temperatures. X- ray diffraction (XRD) results have revealed that CaF2 was the only precipitated crystalline phase in glass ceramic samples. According to the XRD results, a glass ceramic was selected as the best sample in order to ...
متن کاملTemperature Tunability of Dielectric/ Liquid Crystal / Dielectric Photonic Crystal Structures
Recently, photonic crystals doped with liquid crystal (LC) material havegained much research interest. In this article new ternary one-dimensional photoniccrystal introduced and studied. The liquid crystal layer of 5CB and 5PCH is sandwichedby two dielectric layers. For the first time, we use four structures SiO2/UCF35/CaF2,SiO2/5CB/CaF2, NFK51/UCF35/NPSK53 and NFK51/5CB/NPSK53. The effect ofte...
متن کاملMolecular beam epitaxial growth of Eu-doped CaF2 and BaF2 on Si
The growth of Eu-doped CaF2 and BaF2 thin films on Si~100!, ~110!, and ~111! substrates has been realized by molecular beam epitaxy using elemental Eu evaporation. Very bright blue emissions from Eu-doped CaF2 and yellow emissions from Eu-doped BaF2 were obtained in the wavelength range of 400–850 nm at 10 K. Depending on the Si substrate orientation, the zero-phonon line of Eu in the CaF2 thin...
متن کاملGrowth of CsI(Tl) crystals doped with Ca and Tm and investigation of its scintillation characteristics
In this work, the growth of CsI(Tl) crystals as gamma detector was performed using vertical Bridgman method with Ca and Tm co-dopants. For evaluation of the growth crystals, X-Ray Diffraction (XRD), photoluminescence and thermoluminescence spectra as well as recorded gamma spectra were employed. In addition, the scintillation properties including energy resolution, scintillation decay time, abs...
متن کاملSite-selective upconversion in Ho3+ doped fluorite crystals MF2 (M=Ca,Sr,Cd)
With tunable dye laser (620-660 nm) excitation, the site-selective upconversion properties of 0.1 mole% Ho3+ doped CaF2, SrF2 and CdF2 monocrystals were studied at 77K. Three distinct luminescence centres (C4,,, C3v and cluster) were identified for both CaF2 and SrF2 crystals, whereas only one cluster centre was detected for CdF2. The upconversion mechanism for the isolated H O ~ + single site ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2017