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Magnetoresistance
April 24 , 2023
454 days
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- Researchers in the UK, have discovered another property of graphene.
- It is a single-atom-thick layer of carbon atoms bonded in a honeycomb pattern – that further distinguishes this ‘wonder’ material.
- Graphene displays an anomalous giant magnetoresistance (GMR) at room temperature.
- The magnetoresistance in monolayer graphene at 27º C held between two layers of boron nitride increased by 110% under a field of 0.1 tesla.
- To compare, the magnetoresistance in these conditions increases by less than 1% in normal metals.
- GMR is the result of the electrical resistance of a conductor being affected by magnetic fields in adjacent materials.
- It is used in hard disk drives and magneto resistive RAM in computers, biosensors, automotive sensors, microelectromechanical systems, and medical imagers.
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