| 超离子玻璃中的超声吸收理论 |
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| 引用本文： | 王养璞,金其淑.超离子玻璃中的超声吸收理论[J].物理学报,1988,37(7):1083-1088. |
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| 作者姓名： | 王养璞 金其淑 |
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| 作者单位： | 苏州大学物理系 |
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| 摘 要： | 本文依据红外发散理论讨论超离子玻璃中无序引起的多体相互作用所导致的红外发散响应。在研究新的弛豫机制的基础上,修正了滞弹性应变的速率方程,并利用玻耳兹曼叠加原理,导得具有红外发散的超声吸收公式。由此导出超声吸收与频率的ωn关系和表观激活能。这些都与超离子玻璃(AgI)x(Ag2O·nB2O3)1-x的实验数据符合。
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| 收稿时间： | 7/4/1987 12:00:00 AM |
THE THEORY OF ULTRASONIC ATTENUATION IN SUPERIONIC GLASSES |
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| WANG YANG-PU and JIN QI-SHU.THE THEORY OF ULTRASONIC ATTENUATION IN SUPERIONIC GLASSES[J].Acta Physica Sinica,1988,37(7):1083-1088. |
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| Authors: | WANG YANG-PU and JIN QI-SHU |
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| Abstract: | According to IRD theory, we considered the infrared divergence response in the supe-rionic glasses, resulting from mang-body interactions caused by the presense of disorder. On the basis of studying a new relaxation mechanism, we revised the rate equation of anelasric strain, and then using Boltzmann superposition principle, the formula of ultrasonic attenuation with IRD is derived. From this, the power law dependence of ultrasonic attenuation on frequency α∝ωn at low temperature side and an apparent activaion energy EA+ are obtained. They are in agreement with experimental data for superionic glasses (Agl)x(Ag2O·nB2O3)1-x. |
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