Superconductivity - Revision history

Aplstudent at 22:01, 14 June 2015

2015-06-14T22:01:59Z

2015-06-14T21:57:22Z

2015-06-14T21:47:00Z

2015-06-14T21:45:50Z

2015-06-14T21:39:54Z

2015-06-14T21:39:08Z

2015-06-14T21:35:57Z

2015-06-14T21:35:08Z

2015-06-14T21:34:39Z

2015-06-14T21:31:36Z

← Older revision		Revision as of 22:01, 14 June 2015
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	Thus Change in '''V = 4uV'''		Thus Change in '''V = 4uV'''
		+
		+	<h3>Lab Three: Resistance vs Temperature </h3>
		+
		+	By introducing a silicon diode into our system we attempted to measure the resistance vs temperature of the superconducting chip. In our attempted we were required to create a constant current supply that outputs 10 microamps. A current was built but was unsuccessful in making the correct measurements.
		+
		+	Troubleshooting: Current output, rewiring the diode, adjusting the position of the diode, connection adjustments

@@ Line 70: / Line 70: @@
-<br>
 ==Mr. SQUID==
-Mr, SQUID is a Superconducting Quantum interference device. The build contains a superconductor and sensor chip which is hooked up to an adjustable control box. The sensor chip is designed to be immersed in liquid nitrogen and measured by an oscilloscope. Thus after completing the kits, Mr.SQUID will be used to demonstrate more complex properties.
+Mr. SQUID is a Superconducting Quantum interference device. The build contains a superconductor and sensor chip which is hooked up to an adjustable control box. The sensor chip is designed to be immersed in liquid nitrogen and measured by an oscilloscope. Thus after completing the kits, Mr.SQUID will be used to demonstrate more complex properties.
 <h1>Lab One:The Josephson Effect (V-I Curve)</h1>
-−
 [http://hank.uoregon.edu/experiments/superconductivity/superconductivity.html Superconductivity Web Page]

← Older revision		Revision as of 21:45, 14 June 2015
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		+	==Mr. SQUID==
		+
		+	Mr, SQUID is a Superconducting Quantum interference device. The build contains a superconductor and sensor chip which is hooked up to an adjustable control box. The sensor chip is designed to be immersed in liquid nitrogen and measured by an oscilloscope. Thus after completing the kits, Mr.SQUID will be used to demonstrate more complex properties.
		+
		+	<h1>Lab One:The Josephson Effect (V-I Curve)</h1>
		+



	[http://hank.uoregon.edu/experiments/superconductivity/superconductivity.html Superconductivity Web Page]		[http://hank.uoregon.edu/experiments/superconductivity/superconductivity.html Superconductivity Web Page]

← Older revision		Revision as of 21:39, 14 June 2015
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−	<h1>Lab One: ~~Messner~~ Effect</h1>	+	<h1>Lab One: Meissner Effect</h1>

	Definition: The expulsion of magnetic flux when a material becomes superconducting in a magnetic field. If the magnetic field is applied after the material has become superconducting, the flux cannot penetrate it.		Definition: The expulsion of magnetic flux when a material becomes superconducting in a magnetic field. If the magnetic field is applied after the material has become superconducting, the flux cannot penetrate it.

← Older revision		Revision as of 21:39, 14 June 2015
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	<math>I=(2B(toroid)(x^2+r^2)^(3/2))/(u*r^2)=340 A</math>		<math>I=(2B(toroid)(x^2+r^2)^(3/2))/(u*r^2)=340 A</math>

		+	<h6>Lab Six: Determining the Critical Temperature with the Susceptibility Probe</h6>
		+
		+	By using the Superconducting Magnetic Susceptibility kit, the experiment will measure the magnetic susceptibility. The idea is that when a current is introduced the coil it will generate a magnetic field thus by expulsion of the superconducting sample it will create a change in the inductance of the coil.
		+
		+	[[File:Lab_five_superconducting_systems.png]]
		+
		+	Observations: As the sample reaches the critical temperature, the voltage increases very quickly. The system hits goes flat again once it reaches about '''125''' Kelvin.

← Older revision		Revision as of 21:35, 14 June 2015
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	<math>B(toroid)=B(earth)tan(theta)=6.5*10^-5</math>		<math>B(toroid)=B(earth)tan(theta)=6.5*10^-5</math>
		+
		+	Thus we can measure the Induced current.
		+
		+	<math>I=(2B(toroid)(x^2+r^2)^(3/2))/(u*r^2)=340 A</math>
		+

@@ Line 51: / Line 51: @@
 [[File:Lab_four_demo_Superconducting_system.png]]
-<h5>Lab Five: Determining Induced Current using Superconducting Toroidal Ring</h5
+<h5>Lab Five: Determining Induced Current using Superconducting Toroidal Ring</h5>
 We lock a current in the toroid by reaching its critical temperature in the presence of a magnet. Using a compass needle we measure the magnetic field of the toroid by the needle’s attraction.

← Older revision		Revision as of 21:34, 14 June 2015
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	[[File:Lab_four_demo_Superconducting_system.png]]		[[File:Lab_four_demo_Superconducting_system.png]]

		+	<h5>Lab Five: Determining Induced Current using Superconducting Toroidal Ring</h5
		+
		+	We lock a current in the toroid by reaching its critical temperature in the presence of a magnet. Using a compass needle we measure the magnetic field of the toroid by the needle’s attraction.
		+
		+	<math>B(toroid)=B(earth)tan(theta)=6.5*10^-5</math>

← Older revision		Revision as of 21:31, 14 June 2015
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	<h1>Lab One: Messner Effect</h1>		<h1>Lab One: Messner Effect</h1>
		+
	Definition: The expulsion of magnetic flux when a material becomes superconducting in a magnetic field. If the magnetic field is applied after the material has become superconducting, the flux cannot penetrate it.		Definition: The expulsion of magnetic flux when a material becomes superconducting in a magnetic field. If the magnetic field is applied after the material has become superconducting, the flux cannot penetrate it.