Presentation about super conductors.

1. A
TECHNICAL SEMINAR REPORT
ON
SUPER CONDUCTORS
Bachelor of Technology
In
Department of Electrical and Electronics Engineering
Submitted by
N.SANTHOSH KUMAR
19705A0244
II-B.TECH, I SEMESTER
Under the esteemed Guidance Of
P.SAHEER KHAN,
Assistant Professor
Department of Electrical and Electronics Engineering
ANNAMACHARYA INSTITUTE OF TECHNOLOGY AND SCIENCES
(An Autonomous Institution)
(Approved by AICTE, Affiliated to JNTUA, Anantapur)
(NAAC & IEI)
New Boyanapalli-516126, Rajampet.
2019-20

2. SUPER CONDUCTORS
A PRESENTATION

3. Contents
INTRODUCTION
SUPER CONDUCTOR
PROPERTIES OF SUPER CON DUCTORS
TYPES OF SUPER CONDUCTORS
APPLICATIONS
ADVANTAGES
 DISADVANTAGES
CONCLUSION
REFERENCES

4. INTRODUCTION
Superconductivity was discovered in 1911 by
Heike Kamerlingh Onnes, the Dutch physicist
known for his research into phenomena at
extremely low temperature. ... In 1973, a
niobium alloy was produced with a critical
temperature of 23.2 K. This is still the highest
temperature for a metallic superconductor.

5. SUPER CONDUCTOR
Definition of Superconductor:
An element, inter-metallic alloy, or compound that will conduct
electricity without resistance below a certain temperature, magnetic
field, and applied current

6. Superconductors are materials that conduct electricity with
no resistance. This means that, unlike the more familiar
conductors such as copper or steel, a superconductor can
carry a current indefinitely without losing any energy.

7. PROPERTIES
Tc: This is the critical temperature at which the resistivity of a
superconductor goes to zero. Above this temperature the material is non-
superconducting, while below it, the material becomes superconducting
Bc: The scientific notation representing the "critical field" or maximum
magnetic field that a superconductor can endure before it is "quenched"
and returns to a non-superconducting state. Usually a higher Tc also
brings a higher Bc. Type II superconductors have lower Bc1 and upper Bc2
critical fields.

8. Jc: The scientific notation representing the "critical current density" or
maximum current that a superconductor can carry without becoming non-
superconductive.
Meissner Effect: Exhibiting diamagnetic properties to the total
exclusion of all magnetic fields. (Named for Walter Meissner.) This is a
classic hallmark of superconductivity and can actually be used to levitate a
strong rare-earth magnet.

9. TYPES OF
SUPERCONDUCTORS
Type I
Exhibits perfect diamagnetism below transition temperature Tc and has
only one critical magnetic field Bc.

10. Type II
Totally expels and excludes magnetic flux below lower critical field Bc1
and partially does so between Bc1 and upper critical field Bc2; all superconductors
except elements are Type II. This type has a larger Tc than that of a Type I
superconductor.

11. APPLICATIONS
•Particle Accelerators
•Generators
•Transportation
•Power cables
•Electric Motors
•Military
•Computing
•Medical

14. Advantages
Transforming the electricity grid
Improving wideband telecommunication
Aiding medical diagnosis
 efficiency of power transerformation
increases
Reduce the size of motors

15. Disadvantages
High cost
Difficult to maintenance
Should operate only in 77 kelvin temperature
Do not operate it in room temperatures

16. CONCLUSION
The purpose of this presentation was the study of super
conductors. Super conductors types, properties,
applications.

17. REFRENCES
•http://imr.chem.binghamton.edu/labs/super/superc.html,
•(Lattice Picture), accessed 4/14/05.
•Eck, Joe. http://superconductors.org, accessed 3/25/05 - 4/22/05.
•Poole Jr., Charles P., Handbook of Superconductivity, 2000,
•Thorton & Rex, Modern Physics for Scientists and Engineers 2nd ed.Thomson
Learning.