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NEW MAGNETIC MATERIAL
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NEW MAGNETIC MATERIAL
There is a new material made of layers of nickel and vanadium oxide, which has very interesting properties based on its temperature. At lower temperatures, it is an insulator. When it warms up a bit, it has properties of a metal. A BBC article is quoted, "you barely need to heat it by 20 degrees (Kelvin) to get a five-fold change in coercivity (magnetic resistance), he told the conference."
They scientists behind this discovery are looking to apply this concept to magnetic storage materials, but another application is, "a new type of transformer which can cope with sudden surges in current - such as during a lightning strike or a power surge."
There are endless possibilities for highly efficient motors if magnetism could be shielded at the right times. This material isn't shielding magnetism, but if magnetism could be switched off and on with temperature changes, this opens up a whole world of advancements in the energy sciences. Of course, we probably won't be seeing this in the hands of the general public anytime soon, but it is worth knowing about.
You can read the article here: http://www.bbc.com/news/science-environment-26435809
