- #1
Carl Sabel
I was wondering if diamagnetism can be created electrically or does the material have to be diamagnetic in nature?
Welcome to the PF.Carl Sabel said:I was wondering if diamagnetism can be created electrically or does the material have to be diamagnetic in nature?
I'm thinking about a hovering magnetic sphere but neither bismuth or pyrolytic carbon is strong enough. Maybe a copper coil would somehow do the job better. As liquid nitrogen can not be used no superconductors are used.berkeman said:Welcome to the PF.
You mean just to be repelled by a magnetic field? An electromagnet can do that, given the right geometry for the setup. What do you have in mind?
Oh thank you! Now I see what you mean.Charles Link said:See the video in post #9 of this thread. https://www.physicsforums.com/threa...w-moving-piece-of-metal-static-magnet.924786/ This diamagnetic effect is the result of a changing magnetic field (from the falling magnet) so that tremendous electron currents occur in the copper, generating a magnetic field that repels the floating magnet. The diamagnetic effect in the static case, without a changing magnetic field to create the EMF that generates the currents in the copper, is very small, so that there isn't a static levitation, but it's interesting how the magnet floats down, instead of falling quickly.
Diamagnetism is a type of magnetism that occurs in materials that do not have a permanent magnetic moment. This means that they are not naturally magnetic, but they can be temporarily magnetized when in the presence of an external magnetic field. This is different from ferromagnetism, in which materials have a permanent magnetic moment, and paramagnetism, in which materials are only weakly attracted to an external magnetic field.
Yes, diamagnetism can be created electrically. When a material is placed in an external magnetic field, the electrons in the material will experience a force that causes them to move in a circular path. This movement of electrons creates a tiny magnetic field, which opposes the external magnetic field and causes the material to become temporarily magnetized.
Some common examples of diamagnetic materials include water, gold, copper, and silver. These materials have no permanent magnetic moment and will only become weakly magnetized when placed in an external magnetic field. Other examples include wood, plastic, and most organic compounds.
Yes, the strength of diamagnetism can be controlled to some extent. The strength of the diamagnetic effect is dependent on the strength of the external magnetic field and the properties of the material. By varying these factors, the strength of diamagnetism can be increased or decreased.
Diamagnetism has several practical applications, such as in magnetic levitation systems, where the diamagnetic properties of materials are used to create a repulsive force between the material and a strong external magnetic field. It is also used in magnetic resonance imaging (MRI) machines, where the diamagnetic properties of human tissue are used to create detailed images of the body. Additionally, diamagnetic materials are used in some types of electronic devices and sensors.