MAGNETORESISTANCE Meaning and
Definition
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Magnetoresistance is a physical phenomenon referring to the change in electrical resistance of a material when it is subjected to an external magnetic field. It is the property of a material that causes its electrical resistance to vary with the strength and orientation of an applied magnetic field.
The concept of magnetoresistance was first observed in the late 19th century and has been of significant interest in both scientific and technological fields. There are several types of magnetoresistance, including anisotropic magnetoresistance (AMR), giant magnetoresistance (GMR), tunnel magnetoresistance (TMR), and colossal magnetoresistance (CMR).
AMR occurs due to the realignment of electron orbits in a material as it experiences a magnetic field. GMR is based on the phenomenon of electron spin-dependent scattering in a magnetic multilayer or spin valve structure. TMR involves the quantum mechanical tunneling of electrons through an insulating layer sandwiched between two ferromagnetic layers. CMR is observed in certain perovskite materials that exhibit a large change in resistance in response to magnetic fields.
Magnetoresistance has various practical applications, including its use in magnetic field sensors, magnetic memory devices, and magnetic read heads in hard disk drives. Understanding and controlling magnetoresistance phenomena have become critical for the advancement of spintronics, a branch of electronics that utilizes the intrinsic magnetic properties of electrons, opening doors to new technologies in data storage and sensing.
Common Misspellings for MAGNETORESISTANCE
- nagnetoresistance
- kagnetoresistance
- jagnetoresistance
- mzgnetoresistance
- msgnetoresistance
- mwgnetoresistance
- mqgnetoresistance
- mafnetoresistance
- mavnetoresistance
- mabnetoresistance
- mahnetoresistance
- maynetoresistance
- matnetoresistance
- magbetoresistance
- magmetoresistance
- magjetoresistance
- maghetoresistance
- magnwtoresistance
- magnstoresistance
- magndtoresistance
Etymology of MAGNETORESISTANCE
The word "magnetoresistance" is derived from two components: "magneto-" and "resistance".
1. "Magneto-" comes from the Greek word "magnēs", which means magnet. It is also derived from the name "Magnesia", a region in ancient Greece known for its deposits of magnetic minerals.
2. "Resistance" originates from the Latin word "resistentia". In the context of magnetoresistance, resistance refers to the opposition or hindrance encountered by electric current when flowing through a material.
Therefore, "magnetoresistance" combines these two components to describe the phenomenon of changes in electrical resistance under the influence of a magnetic field.
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