Brillouin Zones, Diffraction, and Allowed Energy Levels
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- Опубликовано: 13 окт 2024
- Physics of Materials by Dr. Prathap Haridoss,Department of Metallurgical & Materials Engineering,IIT Madras. For more details on NPTEL visit nptel.iitm.ac.in
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Watching them all, you've been such a great help. Thank you.
What a beautiful explanation,thankyou sir for such amazing lectures
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You are an amazing teacher, professor.
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perfect explaination. great thank you
Thank you so much, it was fantastic.
very helpful .. thank you
great lecture sir!! ..bt one think I don't understand, why u make Bragg plane at 2pi/a,4pi/a,..... since Bragg plane is a perpendicular bisector of line joing two reciprocal lattice point but at 2pi/a , 4pi/a.....the lattice point is located ???? plzz explain .!! thanku 😊
Because Bragg planes by definition are perpendicular bisectors not only for the lines connecting the origin with the nearest-neighbor lattice sites, but also for the lines connecting the origin with any other sites. For example, the perp. bisector for the vector connecting the origin site with the second lattice site (at k = 2*(2pi/a)) will dissect the line at 2pi/a, etc.
As u have said bragg's plane are perpendicular bisector of line joining origin to the reciprocal lattice points.Therefore when we join the line connecting lattice point at position 4π/a to the origin we will get the bragg plane at position 2π/a..Hope u understand the concept.
Thank you professor
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