the uranium magnet

-
A New Type of Magnet

Scientists have made a new magnet out of a uranium compound, USb2. Uranium is a heavy metal. It is element number 92 on the periodic table and is the element used in nuclear powerplants. Uranium has many isotopes in addition to the radioactive versions that are used for nuclear power. This new kind of magnet is made out of a special uranium compound that combines uranium (U - element 92) with antimony (Sb - element 51).

Magnetism is based on the spin and alignment of electrons. Electrical currents can be used to create magnets in metals. This magnet is based on a theory originating in the 1960s. Heat can destroy the magnetic properties of metal by disorganizing the alignment and spin of electrons. The theory was that temperature could be used to make non-magnetic materials become magnetic.

After years of work, Andrew Wray at New York University and his colleagues found that a compound created in the lab out of uranium and antimony can be converted into a magnet even though it is usually not magnetic. Non-magnetic compounds have particles that are in a variety of different alignments and usually locked in place by the surrounding particles. At extremely low temperatures, under the right conditions, Wray’s group found a way to excite the particles in USb2 and have them align in a way that makes the material magnetic.

One of the reasons this is exciting is that in the past, transitioning non-magnetic materials into magnets has required extremely low temperatures. Wray’s group was able to achieve this at -70oC, hundreds of degrees warmer than previously. It is almost like being able to turn on a switch and suddenly transform a non-magnet into a magnet. Magnets are used in power generators and in data storage technologies. Because these magnets can switch their state so easily, it can be beneficial for increasing computing speed and decreasing the power needed in computer memory technology.


Scientists discover new type of magnet
In a normal magnetic material, dense magnetic moments try to align with their neighbors (left). By contrast, in a singlet-based material, unstable magnetic moments pop in and out of existence and stick to one another in aligned clumps

magnets


https://phys.org/news/2019-02-scientists-magnet.html   

https://www.livescience.com/64729-new-uranium-singlet-magnet.html 


https://www.newscientist.com/article/2193032-theres-a-weird-new-type-of-magnet-that-shouldnt-be-able-to-exist/ 

Comments

Post a Comment

Popular posts from this blog

Mahar-ullah Shahminah- Molecular Gastronomy

-
Image
Molecular Gastronomy   By: Shahminah Mahar-ullah Date:3/22/19 Molecular Gastronomy is both a fusion of science and cooking. The scientific discipline gives the chef complete control of what the texture, taste, and physical appearance of the dish. Molecular Gastronomy is a modern unique style of cooking that some would say it could be considered art. There are three aspects of Molecular Gastronomy, as i said before it is texture,taste,and physical appearance. Molecular Gastronomy can have a very simple and familiar taste or a new and unique taste. Taste is often a aspect that is forgotten about in Molecular Gastronomy. Mostly because people who don't know much about the style of cooking kinda forget that its actually cooking ,not just some form a science. Taste is the main focus with cooking in general and with molecular cooking taste can be brought to a whole new level since you have complete control over each part of the dish. Same goes for physical appearance and ...
Read more

Chemically termolecular reactions: The fourth class of chemical reactions

-
Image
Chemically termolecular reactions: The fourth class of chemical reactions Maisy Chase Up until now only three classes of chemical reactions were known. Unimolecular reactions occur when one reactant undergoes bond breaking or forming to create different products. Bimolecular reactions are where two reactants collide and then undergo bond breaking or forming. Termolecular association reactions, where two reactants collide to form a whole with a new chemical bond between the two reactants. A third molecule, known as the bath gas, then removes some of the internal kinetic energy of that molecule to stabilize it. Researchers from Columbia University , led by Assistant Professor of Mechanical Engineering Michael P. Burke, have discovered a fourth class of chemical reaction known as “chemically termolecular reactions.” This involves the breaking and bonding of three molecules. The team showed that these chemically termolecular reactions not only are major chemical pathways but also ...
Read more

Force and Motion

-
Image
Zach Fluck Science blog Force and Motion Blog Sir Isaac Newton was an English astronomer, physicist, and mathematician, born on December 25, 1642. He died on March 20, 1727, most likely from mercury poisoning or old age. However, during his life, he made several contributions to modern science and advanced our understanding of physics tremendously. Arguably his most famous discovery was gravity. However, he had to use his 3 laws of motion to make this accomplishment. Newton understood that an object at rest will stay at rest, unless acted on by unbalanced forces. Therefore, if an object such as an apple is in a resting position there must be a force to make the apple fall to the ground. He discovered this invisible force to be gravity. At a young age Newton was removed from school to be a farmhand. Despite returning to school the turning point in his live was he left his hometown to attend Cambridge University. After attending Cambridge he returned to his hometown where his observat...
Read more