Growth and Thermal Properties of Mg-Doped Lithium Isotope Niobate (Mg:7LiNbO3) Crystal
| Autor: | Xiaoru Pan, Nana Zhang, Jiyang Wang, Mingjun Song, Xishi Tai |
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| Rok vydání: | 2018 |
| Předmět: |
isotope lithium niobite
Materials science General Chemical Engineering Isotopes of lithium thermal properties neutron scattering Lithium niobate Analytical chemistry Crystal structure Condensed Matter Physics Microstructure Thermal expansion Inorganic Chemistry Crystal chemistry.chemical_compound symbols.namesake chemistry lcsh:QD901-999 symbols General Materials Science lcsh:Crystallography single-crystal growth Raman spectroscopy Powder diffraction |
| Zdroj: | Crystals Volume 8 Issue 8 Crystals, Vol 8, Iss 8, p 313 (2018) |
| ISSN: | 2073-4352 |
| DOI: | 10.3390/cryst8080313 |
| Popis: | An Mg-doped isotope lithium niobate (Mg:7LiNbO3) crystal was successfully grown from 7LiOH, Nb2O5, and MgO using the Crozchralski method. The weight of the as-grown crystal with good quality was about 40 g. The crystal structure was determined as an R3c space group using the X-ray powder diffraction (XRPD) method, and the crystal composition (Li%) determined using the Raman mode linewidth method was 49.29%. The average transmittance of the crystal in the range of 500&ndash 2500 nm was approximately 72%. Various thermal properties, including the specific heat (Cp), the thermal expansion coefficient (&alpha ), the thermal diffusion coefficient (&lambda ), and the thermal conductivity (&kappa ), were carefully determined and calculated, and the value divergences among Mg:7LiNbO3, the undoped isotope lithium niobate (7LiNbO3), and natural lithium niobate (LiNbO3) crystals were mainly related to the differences in microstructure caused by the crystal composition. |
| Databáze: | OpenAIRE |
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