From Physics 111-Lab Wiki

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Student's Name: ______________________________________________________________

Partner's Name: ______________________________________________________________

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Pre-lab Discussion Questions

Watch the video on this experiment.

It is your responsibility to discuss this lab with an instructor before your first day of your scheduled lab period. This signed sheet must be included as the first page of your report. Without it you will lose grade points. You should be prepared to discuss at least the following before you come to lab:

1. Why are there energy bands in materials? What is a valence band? A conduction band? A band gap?
2. How do conductors, insulators, and semiconductors differ in their energy-band structures?
3. How do we explain the fact that there are “free electrons” in a metallic conductor? What is an extrinsic semiconductor?
4. What is the Hall Effect?
5. Explain the Van Der Pauw Technique.
6. What measurements are needed for studying the Hall Effect?

Staff Signature ______________________________________________ Date ____________

Completed on the first day of lab? (circle)   Yes   /   No

Mid-lab Questions

1. By day 4, measure the Hall coefficient R_H of the sample at room temperature.

Staff Signature ______________________________________________ Date ____________

Completed by the fourth day of lab? (circle)   Yes   /   No

INCLUDE THIS SHEET AS THE FIRST PAGE OF YOUR REPORT.

Physics 111 Advanced Lab Student Evaluation of Experiment

Now that you have completed this experiment, we would appreciate your comments. Please take a few moments to answer the questions below, and feel free to add any other comments. Since you have just finished the experiment it is your critique that will be the most helpful. Your thoughts and suggestions will help to change the lab and improve the experiments. Please be as specific as possible, using both sides of the paper as needed, and turn this in with your report. Thank you!

Experiment name: Hall Effect in a Semiconductor   Date: ________________________

How was the write-up for this experiment? How could it be improved?

How easily did you get started with the experiment? What sources of information were most/least helpful in getting started? Were the reprints appropriate? Did the pre-lab discussion help? Did you need to go outside the course materials for assistance? What additional materials could you have used?

What did you like and/or dislike about the experiment?

Did you like the wiki or does it need improvement? How?

Would you recommend this lab to fellow student? Why or why not?

What advice would you give to a friend just starting this experiment?

How would you rate the Physics 111 Lab web sites? (1 = poor; 5 = good)   1   2   3   4   5

Comments:

Please circle the abbreviations of the other labs you have done.							Overall quality of this experiment?
ATM	BMC	BRA	COM	CO2	GMA	HAL	1   2   3   4   5
JOS	LLS	MNO	MOT	MUO	NMR	NLD	Poor   Average   Good
OPT	OTZ	QIE	RUT	SHE

Thank you from the 111 Lab Staff