光谱学与光谱分析 |
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Study on Confinement Effect of Phonon Like Modes for Mesoscopic Aggregation Structure of Glasses Phases in the Imitating Magmatic Rocks by Raman Spectra |
XU Pei-cang1, LI Ru-bi1, SHANG Tong-ming1, ZHOU Jian1, SUN Jian-hua1, WANG Yuan-yuan2 |
1. Institute of Applied Materials, Jiangsu University of Technology, Changzhou 213001, China 2. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China |
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Abstract In the present paper,the mesoscopic aggregation structure parameters and the phonon confinement effect like modes of these glass phases in the imitating ultrabasic rock(MU), imitating basic rock(MB), imitating intermediate rock(MI) & imitating acidic rock(MA) were detected by means of phonon dispersion theory,quatume chemical calculation(ab initio)and LWRS, RS analysis technology. The phonon dispersion curves like modes of the MU, MB, MI and MA have were established. It was obtained that as fast as the mesoscopic aggregation size was increasing,the low frequency changes of the phonics phonon like modes transverse wave(TA) & longitudinal wave(LA) were red shifted, the medium & high frequency changes of the optics phonon like modes transverse wave(TO) & longitudinal wave(LO) were blue shifted, the width at half maximum of Raman spectra peak(FWHM) was decreasing and the change bound of the aggregation size was increasing. These conclusions not only enriched the theory of phonon dispersion like modes in the low dimension silicates and its melts,but also exploited new field of Raman spectroscopic study of mesoscopic structure in magmatic rocks. It provides important information for deliberating crystallization,evolution and ore-forming rule of natural magma.
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Received: 2012-12-03
Accepted: 2013-03-16
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Corresponding Authors:
WANG Yuan-yuan
E-mail: xpc@jstu.edu.cn; xupeicang42@tom.com
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