22-08-2012, 08:39 PM
what is spintronics?
basic principle of working?
block diagram of working?
all the circuit diagram available for spintronics.
advantages and limitations.
application.
22-08-2012, 08:39 PM
what is spintronics? basic principle of working? block diagram of working? all the circuit diagram available for spintronics. advantages and limitations. application.
21-12-2012, 02:29 PM
Spintronics
1Spintronics[.docx (Size: 12.49 KB / Downloads: 41) ABSTRACT “Spintronics” is an emergent NANOtechnology, which uses the spin of an electron instead of or in addition to the charge of an electron. Electron spin has two states either “up” or “down”. Aligning spins in material creates magnetism. Moreover, magnetic field affects the passage of spin-up and spin-down electrons differently the paper starts with the detail description of the fundamentals and properties of the spin of the electrons. It proceeds with anote on magnetoresistance, the development of Giant Magnetoresistance (GMR) and devices like Magneto Random Access Memory, which are the new version of the traditional RAMs. It describe how this new version of RAMs which can revolutionize the memory industry. There is also detailed explanation of the way, how this revolution can increase the data density in our memory systems. It is followed by an account of new Spin Field Effect Transistors. It also specifies the differences between electronic devices and spintronic devices. It also gives the hurdles due to the presence of holes.This paper also discusses about a quantum computer, which uses qubits rather than normal binary digits for computations. It also gives the hurdles due to the presence of holes. Finally it ends with a note on why we should switch on this technology. Ran road track and conveyor belts kept the Ford’s assemble line running. At that time, his method of production was lauded and was considered most efficient. But that ford’s assembly plant, which was only eulogized in his time, will look strange to those who were born and raised up in the 21st century. A ferromagnet can even affect the flow of a current in a nearby nonmagnetic metal. For example, in the present-day read heads in computer hard drives, wherein a layer of a nonmanetic metal is sandwiched between two ferromagnetic metallic layers, the magnetization of the first layer is fixed, or pinned, but the second ferromagnetic layer is not. As the read head travels along a track of data on a computer disk, the small magnetic fields of the recorded 1’s and 0`s change the second layer’s magnetization back and forth parallel or antiparallel to the magnetization of the pinned layer. In the parallel case, only electrons that are oriented in the favoured direction flow through the conductor easily. In the antiparallel case, all electrons are impeded. The resulting changes in the current allow GMR read heads to detect weaker fields than their predecessors; so that data can be stored using more tightly packaged magnetized spots on a disk. |
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