This is really Crystallography for Everyone I am nowhere related to this course, just learning solid state physics for knowledge only, and i have reached to this video and learning everything you taught. Why you didn't monetized your videos. And do some updates on your channel, That will keep others to know you are well and fine
Thanks! One thing I'm getting out of this video is that, the corners of unit cell doesn't need to be at lattice points; but they need to have the same 'indistinguishability' property as of a lattice point!
The way I see it is that when he drew the second rectangular unit cell, he is changing the reference axis and he says now P is at 0,0. So now the P atoms become the new lattice point for the unit cell.....but again that is not the kind of crystal we want to produce as we have a specific location for P and S in question. So all in all second unit cell is not the exact one we could use for this question.
Could you also describe the lattice with a parallelogram cell as long as it covers the same area as the rectangle, but it is just squished? For example vector b could go from S to an S that is not vertically above it but further to the left or right?
There is a point that is not clear here, you have defined the translation vector to construct the whole lattice, or the whole lattice space as the span of R. But you have not defined the position vector for the individual unit cells. This is obvious because you have let u,v be integers, then you go on to say that they are equal to 1/2. This is incorrect, you need to define a second position vector.
I'm glad you are starting to use the x, y and z-axes. a, b and c-axes??? Trying to be creative, unique, original? Just a very confusing choice of you from the start!!!
Hi, thanks for the videos first of all. Do you have a video for obtaining the reciprocal lattice ?
This is really Crystallography for Everyone
I am nowhere related to this course, just learning solid state physics for knowledge only, and i have reached to this video and learning everything you taught.
Why you didn't monetized your videos. And do some updates on your channel, That will keep others to know you are well and fine
Thanks!
One thing I'm getting out of this video is that, the corners of unit cell doesn't need to be at lattice points; but they need to have the same 'indistinguishability' property as of a lattice point!
The way I see it is that when he drew the second rectangular unit cell, he is changing the reference axis and he says now P is at 0,0. So now the P atoms become the new lattice point for the unit cell.....but again that is not the kind of crystal we want to produce as we have a specific location for P and S in question. So all in all second unit cell is not the exact one we could use for this question.
Could you also describe the lattice with a parallelogram cell as long as it covers the same area as the rectangle, but it is just squished? For example vector b could go from S to an S that is not vertically above it but further to the left or right?
These are great!
There is a point that is not clear here, you have defined the translation vector to construct the whole lattice, or the whole lattice space as the span of R. But you have not defined the position vector for the individual unit cells.
This is obvious because you have let u,v be integers, then you go on to say that they are equal to 1/2. This is incorrect, you need to define a second position vector.
THANKS BROTHER
I'm glad you are starting to use the x, y and z-axes. a, b and c-axes??? Trying to be creative, unique, original? Just a very confusing choice of you from the start!!!