頁籤選單縮合
題 名 | Structure and Elastic Properties of Iron Phosphate Glasses |
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作 者 | Chang,K. H.; Lee,T. H.; Hwa,L. G.; | 書刊名 | Chinese Journal of Physics |
卷 期 | 41:4 2003.08[民92.08] |
頁 次 | 頁414-421 |
分類號 | 332.8 |
關鍵詞 | |
語 文 | 英文(English) |
英文摘要 | The structure and elastic properties of a series of iron phosphate glasses are investigated using infrared reflectivity and ultrasonic pulse-echo measurements. The mid-infrared and far-infrared spectra give information about phosphate related vibrational modes and the nature of the bond between the metal cat-ion and its surrounding oxygen within the glass network. The structural role of the Fe²⁺ and Fe³⁺ ions in these glasses in terms of four-fold coordinated tetrahedral and/or six-fold coordinated octahedral is discussed. The room temperature ultrasonic velocities (both longitudinal and transverse) in these glasses are determined by the pulse-echo technique. The experimental results are used to obtain the elastic constants. A correlation between the structure and the elastic properties of these glasses is given. |
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