{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HW4+Solutions

HW4+Solutions - MSE 102 Fall 2011 Problem Set 4 Solutions...

This preview shows pages 1–3. Sign up to view the full content.

MSE 102 Fall 2011 Problem Set 4 Solutions James Mastandrea Problem Set 4 Due Date: 9/22/2011 1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Question 1 For this problem we are told that the crystal has symmetry described by plane group 9, c2mm. This plane group describes rectangular systems. Since the system is rectangular, one might usually select ~a and ~ b vectors such that k ~a k 6 = k ~ b k . However, since a square is a type of rectangle, selecting your ~a and ~ b vectors such that k ~a k = k ~ b k is also a valid approach to this problem. The choice of ~a and ~ b will affect the solutions to this problem set. Consequently, I will provide the solutions to this problem set for both of these conditions. First Case: k ~a k 6 = k ~ b k Part A I selected ~ b = 2 ~ e x and ~a = - 1 ~ e y . I first plotted all of the Ga atoms at wyckoff letter a for the (0,0) coordinate reference. Then I added ( 1 2 ~ b , 1 2 ~a ) to each of the atom locations previously found to plot the Ga atoms at wyckoff letter a for the ( 1 2 , 1 2 ) coordinate reference. A unit cell is indicated by the thin black lines.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 5

HW4+Solutions - MSE 102 Fall 2011 Problem Set 4 Solutions...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online