Recent content by Dampi

My question is related to free energy of nucleation in heterogeneous systems and homogeneous systems. I've been given to prove delta_G* (Hetero.)= 27/64 * (delta_G*(Homo)) The stuff I know is : Total (delta G ) = [-4/3 *Pi*r^3* delta Gv] + [4*Pi*r^2*sigma] - [Pi*r^2 * sigma] 1st...

i don't have all of the data from x ray diffraction. how do u assign the peaks to the specific planes? so confused :(

Thanx for the reply. How do you find that constant (on the paper) to divide by so that 3rd column becomes an integer? (eg. 46=184-138) ??

Hi, My question is about Type1 and Type2 superconductors. Is there a difference between the mechanisms of superconductivity in type1 and type2? And why type2 display different critical magnetic fields as a function of orientation? I have no idea about this. It'd be great if anyone...

Wow, that's awesome. Thanx! Just wondering, if vacancy density depends on temperature, can't we just compare the temperatures to obtain a ratio? bcz all the other parameters in the equation is the same and just temperature changes. ?? Is "vacancy density" and "number of vacancies" the same...

hey sorry I should have posted that in the first place. BCC cubic iron has a lattice constant of 0.287nm. What is the ratio of vacancy densities at T= 25degree C and T=700 degree C given that the energy associated with introducing 1 defect site is 0.92eV. so is N= 0.287nm?

I only have 2 different temperatures, the energy of introducing 1 defect and lattice parameter "a" ...

What is the formula for Vacancy density? I have question regarding the relationship between temperature and vacancy densities. Thanks!

The question I'm confused about it below:- A unit cell of copper is cubic FCC. X ray data was measured at Lambda= 1.5406 angstroms. What is the volume? I think to find volume, I need to find lattice constant which is the length of the unit cell. The peaks were given and they are at...