Is pure neodymium magnetic?
Composition. Neodymium is a metal that magnetically orders only below 19 K (−254.2 °C; −425.5 °F), where it develops complex antiferromagnetic orders. The neodymium atom can have a large magnetic dipole moment because it has 4 unpaired electrons in its electron structure as opposed to (on average) 3 in iron.
Who invented Neodymium magnets?
Neodymium magnets were invented in the early 1980s by General Motors and Sumitomo Special Metals. The companies discovered that by combining neodymium with small amounts of iron and boron, they were able to produce a powerful magnet.
What is the best grade of neodymium magnets?
N52
The highest grade of neodymium magnet currently available is N52. Any letter following the grade refers to the temperature rating of the magnet. If there are no letters following the grade, then the magnet is standard temperature neodymium.
Is neodymium harmful to humans?
Health effects of neodymium Neodymium is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. This can cause lung embolisms, especially during long-term exposure. Neodymium can be a threat to the liver when it accumulates in the human body.
What are 3 uses for neodymium?
Uses of Neodymium Neodymium is used with iron and boron to create powerful permanent magnets, also called NIB magnets. NIB magnets are used in computers, cell phones, medical equipment, toys, motors, wind turbines and audio systems. Neodymium is used as a crystal (neodymium-doped yttrium aluminum garnet) in lasers.
Are Bucky Balls legal?
A federal judge overturned a 2012 ban on the sale of the toy, meaning it’s now legal to sell them in the U.S. again. But just last week, a federal judge overturned the CPSC decision, meaning that the tiny magnetic balls are legal again.
Are neodymium magnets expensive?
Neodymium magnets are relatively more expensive than ceramic magnets. They rust very easily, and extra steps must be taken to protect them from corrosion. Neodymium magnets are also very brittle and will crack under stress.
How strong is 1000 gauss?
about 80,000 A/m.
A rating of 1,000 gauss resistance is equal to about 80,000 A/m.