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Monday & Wednesday, July 20 and 22, 2009
Monday & Wednesday, July 20 and 22, 2009

Effects of High Magnetic Field Postannealing on Microstructure and
Effects of High Magnetic Field Postannealing on Microstructure and

Three-body recombination for electrons in a strong magnetic field: Magnetic... F. Robicheaux 兲
Three-body recombination for electrons in a strong magnetic field: Magnetic... F. Robicheaux 兲

... energy formed from the 4, 8, and 16 K plasmas have clearly different fractions of atoms with Lz ⬎ 10ប; the 16 K plasma gives the most favorable fraction. It seems likely this is due to the larger cyclotron orbit at 16 K. In Fig. 3, we show the distribution of 具mB̂ · 共rជ ⫻ vជ 兲典 when recombination is ...
Physics 107 Recommended Demos
Physics 107 Recommended Demos

... over the launcher core. Also includes three additional rings: one split aluminum ring that will not launch, one copper ring to show the effect of changing materials and one shorter aluminum ring with higher resistance to show that it will not go as high because of decreased induced current. (Shelf C ...
Magnetic Reconnection
Magnetic Reconnection

SIXTH FRAMEWORK PROGRAMME
SIXTH FRAMEWORK PROGRAMME

Ferro-fluids - ECE Georgia Tech
Ferro-fluids - ECE Georgia Tech

... 1. Measure the time it takes for the sphere to fall through the Ferro fluid. a. Pour the Ferro fluid into the graduated cylinder. b. Measure the height of the Ferro fluid (in cm). c. Hold the sphere (marble) at the surface of the Ferro fluid. d. Release the sphere and start the stopwatch at the same ...
Ohm`s Law - Physics of Magnetism and Photonics Research Division
Ohm`s Law - Physics of Magnetism and Photonics Research Division

... • Note that in a typical electric circuit (for example, a light bulb) connected to a battery, the current is the same all the way around the loop. • Why is it constant around the loop ? r • Recall that the only driving force on the charges, f s , is confined on the source (battery). • Suppose that t ...
Oscillating Magnetic Dipole in an Inhomogeneous Magnetic Field
Oscillating Magnetic Dipole in an Inhomogeneous Magnetic Field

... In [1] they made use of the magnet-solenoid equivalence under the assumption of uniformed magnetization of the magnet, when taking the magnets dimensions into consideration. As described, they carried out the derivation for a parallelepipedal-shaped magnet. However if changing the geometry of the ma ...
chapter- ii literature review
chapter- ii literature review

... the starting point of a number of transport theories, such as the model of miller and Abrahams [4]. This model became the most widely accepted theory of conduction between localized states and is the source of the variable range hopping (VRH) theory of Mott[5]. According to this model, electrons are ...
2D Seismic surveys
2D Seismic surveys

... basins have a lower concentration of magnetic materials than the surrounding crystalline rocks.  Sedimentary basins are the areas with the lowest magnetic field. ...
Chapter 31
Chapter 31

- Jntu notes
- Jntu notes

High Magnetic field generation for laser-plasma
High Magnetic field generation for laser-plasma

... solenoid used in the laser experiment. The magnet consists of 2 coils, each having 41 discs 0.5 mm thick with 2.3 cm inner and 4.6 cm outer radii. A 33 degree wedge was cut in each disc, and neighboring discs were buttwelded together forming continuous coils (Figure 2). Between each disc a 127 µm th ...
AP2 Unit 5 BW3
AP2 Unit 5 BW3

... with charge e. Another way to consider this question is to solve Equation 24.8 for the charge of an ion revolving in a (mv / r ) magnetic field. Doing so, we obtain: q  . The two groups of ions have the same mass, velocity and orbital radius, B so they have the same numerator. It follows that peak ...
Medical Physics
Medical Physics

Lecture_13
Lecture_13

... 1. Determine whether the magnetic flux is increasing, decreasing, or unchanged. 2. The magnetic field due to the induced current points in the opposite direction to the original field if the flux is increasing; in the same direction if it is decreasing; and is zero if the flux is not changing. 3. Us ...
Method sheet lines magnetism
Method sheet lines magnetism

Magnetism - Northern Highlands
Magnetism - Northern Highlands

Resistance - Purdue Physics
Resistance - Purdue Physics

UNIT 2 THE BODY
UNIT 2 THE BODY

... MAGNETS HAVE TO POLES: NORTH AND SOUTH Opposite poles attract. Same poles repel LIKEWISE ELECTRICAL CHARGES ...
File
File

... •All matter is made of atoms. •Atoms have a magnetic fields. Atoms group together when their magnetic fields align. These groups are called domains. ...
Chapter 8 MAGNETISM
Chapter 8 MAGNETISM

... figure 2. However, there is one crucially important difference; in electrostatics one can isolate a single pole, that is either the positive or negative charge. This is not possible for a magnetic dipole; if you split a magnetic dipole, you always finish up with two smaller magnetic dipoles. There h ...
Chapter 28 Magnetic Induction
Chapter 28 Magnetic Induction

... The net emf that drives I in this circuit is the difference between the emf of the battery and the emf induced in the rod as a result of its motion. Applying a righthand rule to the rod reveals that the direction of this magnetic force is to the right. Hence the rod will accelerate to the right when ...
INVESTIGATION OF INFLUENCE QUANTITY FOR READING STABILITY ON MAGNETIC SUSCEPTOMETER Wang Jian
INVESTIGATION OF INFLUENCE QUANTITY FOR READING STABILITY ON MAGNETIC SUSCEPTOMETER Wang Jian

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Giant magnetoresistance



Giant magnetoresistance (GMR) is a quantum mechanical magnetoresistance effect observed in thin-film structures composed of alternating ferromagnetic and non-magnetic conductive layers. The 2007 Nobel Prize in Physics was awarded to Albert Fert and Peter Grünberg for the discovery of GMR.The effect is observed as a significant change in the electrical resistance depending on whether the magnetization of adjacent ferromagnetic layers are in a parallel or an antiparallel alignment. The overall resistance is relatively low for parallel alignment and relatively high for antiparallel alignment. The magnetization direction can be controlled, for example, by applying an external magnetic field. The effect is based on the dependence of electron scattering on the spin orientation.The main application of GMR is magnetic field sensors, which are used to read data in hard disk drives, biosensors, microelectromechanical systems (MEMS) and other devices. GMR multilayer structures are also used in magnetoresistive random-access memory (MRAM) as cells that store one bit of information.In literature, the term giant magnetoresistance is sometimes confused with colossal magnetoresistance of ferromagnetic and antiferromagnetic semiconductors, which is not related to the multilayer structure.
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