What is the Lattice Constant? - Physics Stack Exchange
2021年2月8日 · What is a physical description of the lattice constant and how does one calculate it? From what little resources I have found, I have figured out that it has to do with the size of the atoms that comprise the lattice.
How is the lattice contant derived in a bcc unit cell?
I have a text saying: The atoms touch along a $\langle111\rangle$ direction and this is referred to as the close-packed direction.
Distance between adjacent planes in a crystal
2016年7月21日 · As an example, consider the plane that intersects the $\pmb{a}$ axis at the second lattice site, the $\pmb{b}$ axis at the third lattice site, and the $\pmb{c}$ axis at the first lattice site. The reciprocals of $2, 3, 1$ are $\frac{1}{2}, \frac{1}{3}, 1$ , …
What is the correct method for finding the lattice constant of NaCl?
2012年9月16日 · In summary, the question asks for the lattice constant of NaCl, which is a simple cubic lattice with Na and Cl atoms alternating positions. Assuming that the atoms are hard spheres with nearest neighbors touching, the lattice constant can be calculated using the equation a = 2 * r, where r is the effective radius of the atoms.
Primitive unit cell of fcc - Physics Stack Exchange
2017年8月9日 · Instead just displace the cell a small distance along the two lattice vectors while keeping the size constant: and it's now obvious that the cell contains two lattice points so it's a compound cell. This always works, and in any number of dimensions though of course it's harder to visualise in 3D.
condensed matter - How are lattice parameters determined from ...
2015年6月24日 · If you have strain, or varying composition, you can clearly see the varying lattice constant in the close up. But the diffractometer still knows where it is in reciprocal space, and changing diffraction angle (albeit small) is showing a changing lattice parameter using the normal Bragg rules. $\endgroup$ –
What is the Lattice Constant of Iron? - Physics Forums
2011年1月25日 · The lattice constant of iron determines its crystal structure, which in turn affects its physical and mechanical properties. For example, the lattice constant affects the density, strength, and thermal conductivity of iron. 3. How is the lattice constant of iron measured? The lattice constant of iron can be measured using various techniques ...
Lattice constant and volume density - Physics Forums
2015年9月22日 · The lattice is a body-centered lattice with a lattice constant of 5.89 angstroms. The conversation also mentions calculating the volume density of the atoms using the surface density equation, but there seems to be some confusion about the number of atoms and the type of crystal structure being discussed.
Wavelength and Lattice constant - Physics Stack Exchange
2019年5月25日 · Combining these two, we need a wavelength slightly smaller than the lattice parameter so that we can actually verify our findings. Otherwise, if we cannot see destructive interference as well, and we cannot claim we have found a constructive interference either, and then there won't be a lattice parameter to be calculated.
Why is an FCC lattice the reciprocal lattice of a BCC Lattice?
2024年2月28日 · It might be due to symmetry, a high symmetry system may keep it's periodic structure even when passing from the starting lattice to its dual lattice, for example considering two dimensional lattices since they are easy to wrap our heads around, a square lattice does not change, while a rectangular one rotate by 90 degrees, passing from a laying rectangle to a …