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Hystus6 karma
I think it's answered in this comment the expert made
The ELI5 version is this: Think about putting a bunch of bar magnets in playdough, all lined up N-S N-S etc. Then put two of these blocks of playdough magnets near eachother. Over time, since the magnets are NOT PERFECTLY lined up, one of them is going to start to turn in the playdough. Over time more start turning so the 'power' in the playdough magnet blocks starts to go down. How easily the magnets are allowed to turn in the playdough is called coercivity. High coercivity means the magnets can easily move in the playdough.
Now, this process happens at the molecular level.
Hystus2 karma
Two quesitons: 1) You mention Alnico. Is this AlNiCo, Aluminium Nickel Cobalt?
2) Is magnetization and demagnetization caused by a physical change in the orientation of the magnetic molecules of in the object? IFAIK heating ferromagnetic things up and letting them cool can make them lose their magnet properties, presumably because all the magnetic dipoles in are pointing every which way. If this is correct I ask this. What research is being done into binding molecular magnetic dipoles in an atomic structure. Like graphene sheets or Silicon wafers. I'm not suggesting these substances, I'm thinking about a repeating uniform structure which has molecular magnetic dipoles in a lattice of other atoms acting as a scaffold. Is this even possible theoretically?
Hystus7 karma
Grandpa might like this Youtube channel: https://www.youtube.com/user/TipsfromaShipWright
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