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12. The side of a FCC cubic unit cell of a monatomic crystal is 5.6 A. A wave is traveling along the [100] direction. Th
Posted: Tue May 17, 2022 8:58 pm
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- 12 The Side Of A Fcc Cubic Unit Cell Of A Monatomic Crystal Is 5 6 A A Wave Is Traveling Along The 100 Direction Th 1 (20.77 KiB) Viewed 69 times
12. The side of a FCC cubic unit cell of a monatomic crystal is 5.6 A. A wave is traveling along the [100] direction. The force constant between the two atoms is 1.5 x 10'dynes/em. The Young's modulus in the [100] direction is 5 x 10"dynes/s. The density of the crystal is 5g/ce. Estimate the frequency of the wave at which it is most strongly reflected from the crystal. Assume that the atoms lying away from the direction of propagation of the wave do not disturb it.