Magnetoresistance

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Overview:

Recently, researchers in the UK, led by Nobel laureate Andre Geim have found that graphene displays an anomalous giant magnetoresistance (GMR) at room temperature.

About Magnetoresistance:

  • What is it? It is the result of the electrical resistance of a conductor affected by magnetic fields in adjacent materials.
  • Applications: It is used in hard disk drives and magneto resistive RAM in computers, biosensors, automotive sensors, microelectromechanical systems, and medical imagers etc.

Key facts about Graphene

  • It is composed of monolayer of closely packed carbon atoms that form a hexagonal honeycomb lattice.
  • It is the building-block of Graphite.
  • It is the thinnest, most electrically and thermally conductive material in the world.
  • It is also tremendously strong—about 200 times stronger than steel and flexible, as well as transparent.
  • It is also known as a wonder material due to its vast potential in the energy and medical world.

 


Q1) What is Graphite?

Graphite is a naturally occurring mineral that is composed of carbon. It has a layered crystal structure and is the most stable form of carbon under normal conditions.

Source: What is magnetoresistance? It’s one more thing graphene does differently