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MnF_2的高压Raman光谱研究
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作者 赵永年 刘振先 +3 位作者 崔启良 徐义秋 樊玉国 邹广田 《高压物理学报》 CAS CSCD 北大核心 1990年第1期1-6,共6页
本文首次报道了在0—3.21GPa压力范围内MnF_2的高压Raman光谱,结果表明压力在1.32GPa附近,MnF_2 发生了一次结构相变,晶胞中氟原子构成的八面体没有解体。在 3.21GPa下,Raman谱带消失,表明又有一次结构相变发生。
关键词 高压 RAMAN光谱 结构相变 氟化锰
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EXPERIMENT TECHNIQUE RESEARCH OF SINGLE CRYSTAL X-RAY DIFFRACTION UNDER HIGH PRESSURE
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作者 樊玉国 于景生 +2 位作者 孟悦 徐义秋 邹广田 《Science China Chemistry》 SCIE EI CAS 1990年第8期920-928,共9页
We have set up the high pressure device used for single crystal X-ray diffraction, determined the X-ray absorption curve of the device on Nicolet four-circle diffractometer, established the data collection programme o... We have set up the high pressure device used for single crystal X-ray diffraction, determined the X-ray absorption curve of the device on Nicolet four-circle diffractometer, established the data collection programme of a fixed φ scheme, and corrected the offsets of the optical centering of the crystal by using a reflection which is measured in eight different orientations. The mixture ratio of methanol: ethanol: water 16: 3: 1 was used as a pressure medium, high pressure calibration was based on the wavelength shift of the R_1 fluorescence line of ruby, and the pressure of 100 kbar was obtained. 展开更多
关键词 high PRESSURE DIFFRACTION different ORIENTATIONS reciprocal SPACE
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