Spin1

Only available on StudyMode
  • Download(s) : 135
  • Published : February 17, 2013
Open Document
Text Preview
A
Seminar
Report On
“Spintronics Technology”

Session 2010-2011

Submitted To:

Submitted By:

Dr. R.S. Meena
Mr. Pankaj Shukla
Dept. of Electronics Engg.
UCE, RTU, Kota

Shailendra Kumar Singh
C.R.No. 07/126
Final Year, ECE
UCE, RTU, Kota

Department of Electronics and Communication Engg.
University College of Engineering
Rajasthan Technical University, Kota
Page 1

CERTIFICATE
This is certify that the Seminar report titled “Spintronics Technology” has been submitted in partial fulfilment of the requirement for the award of Bachelor of Technology in Electronics & Communication Engineering by following student of final year B.Tech.

Shailendra Kumar Singh
C.R.No:- 07/126
B.TECH. FINAL YEAR
UCE, RTU, KOTA

Seminar Coordinators:

Head of the Department:

Dr R S Meena & Mr Pankaj Shukla
(Associate Professors)
Dept. Of Electronics Engg.
UCE, RTU, Kota

Dr Rajeev Gupta
Professor
Dept. Of Electronics Engg.
UCE, RTU, Kota

Page 2

ACKNOWLEDGEMENT
It gives me great pleasure to present my seminar report on “Spintronics Technology”. No work , however big or small, has ever been done without the contributions of others.
It would be a great pleasure to write a few words, which would although not suffice as the acknowledgement of this long cherished effort, but in the absence of which this report would necessarily be incomplete. So these words of acknowledgement come as a small gesture of gratitude towards all those people, without whom the successful completion of this project would not have been possible.

I would like to express deep gratitude towards Dr. R S Meena (Associate Professor of Electronics Engineering Dept., UCE, Kota) & Mr. Pankaj Shukla (Associate Professor of Electronics Engineering Dept., UCE, Kota) who gave me their valuable suggestions, motivation and the direction to proceed at every stage.They are like a beam of light for us. Their kind guidance showed us the path of life and is unforgettable. They extended towards their valuable guidance, indispensable help and inspiration at times in appreciation I offer them my sincere gratitude. Last but not least we would like to thank the Department of Electronics Engineering, UCE, Kota for providing me with the facilities to lab, and all staff members of communication lab, it would have been impossible for me to complete my project without their valuable guidance & prompt cooperation.

I have tried my level best to make this seminar report error free ,but I regret for errors , if any.

SHAILENDRA KUMAR SINGH
C.R.NO. - 07/126
B. TECH. FINAL YEAR, ECE
UCE, RTU, KOTA

Page 3

CONTENTS
S. No

Chapters

Page No

1.

Introduction

07

2.

Basic Principle

08

3.

Gaint Magnetoresistance

10

4.

Construction of GMR

12

5.

Memory Chips

14

6.

GMR Sensors

15

7.

Spin Valve GMR

16

8.

Spintronic Devices

17

9.

MRAM

18

10.

Spin Transistors

19

11.

Spintronic Scanner

22

12.

Conclusion

26

13.

Reference

27

Page 4

List of Figures
S No.

Figure Name

Page No.

1.

Electron spinning

08

2.

Magnetic Orientation of electrons.

09

3.

A GMR read head

10

4.

A GMR Device

13

5.

A General Magnetic Field Sensor

14

6.

Spintronic Sensor

15

7.

Standard Geometry for GMR based Spin Valves

16

8.

GMR based Spin Valves for read head In hard drives

16

9.

256 K MRAM

18

10.

Spin Transistor

19

11.

Spin Polarised Field Effect Transistor

20

Page 5

ABSTRACT
Spintronics is an emergent technology that exploits the quantum propensity of the electrons to spin as well as making use of their charge state. The spin itself is manifested as a detectable weak magnetic energy state characterised as ―spin up‖ or ―spin down‖. Conventional electronic devices rely on the transport of electrical charge carriers – electrons – in a semiconductor such as...
tracking img