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

  • Context: Undergrad 
  • Thread starter Thread starter gjfelix2001
  • Start date Start date
  • Tags Tags
    Law
Click For Summary

Discussion Overview

The discussion revolves around Vegard's Law, an empirical rule related to the lattice parameters of alloys, specifically in the context of finding references and accessible literature on the topic. Participants are seeking information and resources to better understand the law and its applications.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant requests references for Vegard's Law, indicating difficulty finding information in textbooks.
  • Another participant explains Vegard's Law as an empirical rule that suggests the lattice parameter of an alloy is a linear function of composition when the crystal structure remains unchanged.
  • A specific example is provided regarding the interpolation of lattice parameters for Ga1-xAlxAs based on known values for GaAs and AlAs.
  • A reference to a specific article by Denton and Ashcroft is suggested for further reading.
  • A participant expresses concern about access to the recommended article due to paywall restrictions, seeking alternative free sources.
  • Another participant suggests that university libraries typically provide access to the journal in question.

Areas of Agreement / Disagreement

Participants generally agree on the existence and basic premise of Vegard's Law, but there is no consensus on accessible resources for further reading, as some participants face barriers due to paywalls.

Contextual Notes

Limitations include the potential for varying interpretations of Vegard's Law and the dependence on specific conditions such as crystal structure stability and temperature. The discussion does not resolve the issue of accessing academic papers.

Who May Find This Useful

Students and researchers interested in materials science, particularly those studying alloys and lattice parameters, may find this discussion relevant.

gjfelix2001
Messages
17
Reaction score
0
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
 
Physics news on Phys.org
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 Ga1-xAlxAs.

PS: See, for instance, Denton and Ashcroft, Phys Rev A 43, 3161 (1991)
http://prola.aps.org/pdf/PRA/v43/i6/p3161_1
 
Last edited by a moderator:
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.
 
gjfelix2001 said:
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.
 

Similar threads

Graduate Need guidance for using and understanding NuShellX
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Anyone knows the slow light in EIT？
  • · Replies 0 ·
Replies
0
Views
3K
Undergrad Trouble piecing together LS coupling
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Source of the damping force in Lorentz model
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Superconductivity energy saved v Cooling/Heating energy loss
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Looking for a paper describing the Raman effect
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Rippling Graphene Harvests Thermal Energy?
  • · Replies 30 ·
2
Replies
30
Views
4K
Graduate From two-body Green's function to one-body in perturbation theory
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Can Ablation of Materials Neutralize In-Flight Atomic Beams?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Question about a Servo setup (locking a laser to a cavity)
  • · Replies 21 ·
Replies
21
Views
3K