Frost Ray L, López Andrés, Theiss Frederick L, Romano Antônio Wilson, Scholz Ricardo
School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia.
School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia.
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Feb 5;136 Pt B:216-20. doi: 10.1016/j.saa.2014.09.018. Epub 2014 Oct 2.
The mineral meliphanite (Ca,Na)2Be[(Si,Al)2O6(F,OH)] is a crystalline sodium calcium beryllium silicate which has the potential to be used as piezoelectric material and for other ferroelectric applications. The mineral has been characterized by a combination of scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) and vibrational spectroscopy. EDS analysis shows a material with high concentrations of Si and Ca and low amounts of Na, Al and F. Beryllium was not detected. Raman bands at 1016 and 1050 cm(-1) are assigned to the SiO and AlOH stretching vibrations of three dimensional siloxane units. The infrared spectrum of meliphanite is very broad in comparison with the Raman spectrum. Raman bands at 472 and 510 cm(-1) are assigned to OSiO bending modes. Raman spectroscopy identifies bands in the OH stretching region. Raman spectroscopy with complimentary infrared spectroscopy enables the characterization of the silicate mineral meliphanite.
矿物铍硅钙钠石（Ca,Na）2Be[(Si,Al)2O6(F,OH)]是一种结晶性钠钙铍硅酸盐，有潜力用作压电材料及用于其他铁电应用。该矿物已通过扫描电子显微镜（SEM）与能量色散光谱（EDS）以及振动光谱相结合的方法进行了表征。EDS分析表明该材料中硅和钙的浓度较高，而钠、铝和氟的含量较低。未检测到铍。1016和1050 cm(-1)处的拉曼谱带归属于三维硅氧烷单元的SiO和AlOH伸缩振动。与拉曼光谱相比，铍硅钙钠石的红外光谱非常宽。472和510 cm(-1)处的拉曼谱带归属于OSiO弯曲模式。拉曼光谱可识别OH伸缩区域的谱带。拉曼光谱与互补的红外光谱相结合能够对硅酸盐矿物铍硅钙钠石进行表征。
