科研之友
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摘要
A new experimental technique yields high-precision measurements of attenuation and dispersion of ultrasound in pure metals in the presence of a magnetic field, but existing theories have approximations which make it impossible to make accurate comparisons with the data. I have constructed a theory with few approximations to eliminate this problem. In addition, symmetry theorems are derived for the effects resulting from the reversal of the magnetic field direction. Calculations for very pure copper are in very good agreement with experimental data.
- 出版日期2017-5
