So far, I have mentioned several times that I've recently been into the next
generation vehicle(As mentioned before, recently, I have taken an interest in the next generation vehicle). The electric vehicle is one of the more/most dominant candidates of them at
this moment even though they still have some problems(limitations) such as a super expensive
price-tag and a short driving range. I found an online article about a drive
motor for EVs. The article said that General Motors (GM) in the U.S. and Stellantis in
Europe invested in a startup "Niron Megnetics (NM)" in the U.S, which has
been developing a permanent magnet without a rare earth, through Cooperate
Venture Capital (CVC). Permanent magnetic synchronous motor is the main stream
in motor for EVs and generally uses Neodymium (Nd) for a rotor. It is said that the
heavy rare earth elements like Dysprosium (Dy) needs to be added to keep(retain) magnetic
power of The Nd magnet and that the Nd magnet is very expensive. On the other hand,
NM has been developing the magnet "Clean Earth Magnet" that does not use rare earth. It
is composed of iron nitride which exists in abundance in the earth. That's why it is more
eco-friendly and cost-friendly compared to magnets which use rare earth like the
Nd magnets. It also has a stable temperature feature. Actually, I'm afraid that
I didn't spell some names of heavy rare earth and light rare earth elements very
well and I googled them. Anyway, I expect that we will use affordable motors for
EVs in the future.