Vergard's Law Help - Get References & Read About It

[gjfelix2001]

Hi, can anyone give me references about the Vergard's Law, i have heard about it through a couple of papers, but i haven't found a thing in my books. Where can i read about it? thanks

 

[Gokul43201]

Vegard's law is an empirical rule that's approximately true for many alloys, and it says that so long as changing concentration of an alloying element does not result in a change in crystal structure, the lattice parameter is a linear function of composition (at fixed temperature).

So, for instance, if I know the lattice parameter of GaAs and that of AlAs, then I can linearly interpolate to find the approximate lattice parameter of any Ga_1-xAl_xAs.

PS: See, for instance, Denton and Ashcroft, Phys Rev A 43, 3161 (1991)
http://prola.aps.org/pdf/PRA/v43/i6/p3161_1

 

[gjfelix2001]

Thanks, and help again :)

Thanks a lot for this information. I want to read the article you recommend me, but it ask for a password, obviously i don't have one, so do you know another free source of information about this ? every website that has information or papers about this isn't free. I am only and student and i can't pay 30 dollars for an article.

 

[jtbell]

I am only and student and i can't pay 30 dollars for an article.

If you're a university student, your library should carry Phys Rev A.