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| xx single crystals were grown by the optical floating zone method. The as-grown samples were dark brown in color and had a size of Ф 4-6 mm × L 87 mm,with the largest crystal domain of Ф 5 mm× L 32 mm. After being annealed, the color of the sample faded to light brownish. The powder X-ray diffraction analysis showed that the crystals had a columbite-type MgNb2O6 structure. The crystal grew along the c-axis direction and the cleavage plane could be indexed to b-axis direction. Transmission polarized-light microscopy measurements displayed that the crystal was free of low angle grain boundaries and inclusions. Raman scattering was also used to characterize the crystals and gave the change of x-O band annealed and non-annealed. The photoluminescence spectra exhibited a broad and strong blue emission band centered at 435 nm. |
» 搶金幣啦!回帖就可以得到:
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| xx single crystals were grown by(through) the optical floating zone method. The as-grown samples were dark brown in color (with) a size of Ф 4-6 mm × L 87 mm and)the largest crystal domain of Ф 5 mm× L 32 mm. After being annealed, the color of the samples (直接用the samples地道點)faded to light brownish. (The powder X-ray diffraction analysis=X-ray powder diffraction analysis即XRD, showed that the crystals had a columbite-type MgNb2O6 structure. The crystal(s) grew along the c-axis direction and the cleavage plane could be indexed to b-axis direction. Transmission polarized-light microscopy measurements displayed that the crystal(s) (were) free of low angle grain boundaries and inclusions. (The)Raman scattering was also used to characterize the crystals and gave the change of x-O band annealed and non-annealed. The photoluminescence spectra exhibited a broad and strong blue emission band centered at 435 nm. |
| xx single crystals were grown by the optical floating zone method. The as-grown samples were dark brown in color (and had=with) a size of Ф 4-6 mm × L 87 mm (,with =which is)the largest crystal domain of Ф 5 mm× L 32 mm. After being annealed, the color of the sample(s) faded to light brownish. (The powder X-ray diffraction analysis=X-ray powder diffraction analysis即XRD,這點是專業(yè)東西,但我知道的XRD是這樣寫的,如果你的本身就是那樣寫的話,就要把前面的the給去掉) showed that the crystals had a columbite-type MgNb2O6 structure. The crystal(s) grew along the c-axis direction (and=so that) the cleavage plane could be indexed to b-axis direction. Transmission polarized-light microscopy measurements displayed that the crystal(s) (was=were) free of low angle grain boundaries and inclusions. Raman scattering was also used to characterize the crystals and gave (the=a) change of x-O band annealed and non-annealed. The photoluminescence spectra exhibited a broad and strong blue emission band centered at 435 nm. |
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