Diamagnetism Definition and 34 Threads

I learned that diamagnetism is due to Lenz's law. But doesn't Lenz's law only apply when the magnetic field changes? Why does diamagnetism occur even when a constant magnetic field is applied without change?

I want to improve the magnetic field strength at the surface of a magnet configuration by utilizing diamagnetic materials to guide the magnetic field lines. I have not the proper equipment to measure the effect myself but would this work? This is the initial configuration with four magnets side...

Let's say I have a constant magnetic field and I dive into it a diamagnetic material. Griffiths says that in the presence of a magnetic field, matter becomes magnetized and it will be found to contain many tiny dipoles with a net alignment along some direction. However, what's exactly the link...

Hello. I was wondering if diamagnetic materials only repel varying electric field? By Ampere law only a variable flux can cause an electromotive force, so, and by what I understood diamagnetism is explained exclusively by Ampere law. Am I wrong?

I recently saw the video of the frog being levitated with a big magnet. Would it be possible to flip the magnet over and use it to levitate a vehicle? How much energy would it take to levitate, say, a 1000kg vehicle above a dry lakebed?

Hi, This YouTube video shows various shapes of pyrolytic graphite suspended on an alternating polarity matrix of square neodymium magnets. As I understand the principle of diamagnetic anisotropy, the stronger the external magnetic force, the stronger the induced repulsive force in the...

I was wondering if diamagnetism can be created electrically or does the material have to be diamagnetic in nature?

I know that in a para magnetic material the magnetization increase on cooling. What will be the same effect on a diamagnetic material,considering the fact that Curies law doesn't hold good on diamagnetic materials.

I'm new to the concept of diamagnetism, but it seems very fascinating, and I'd like to try a simple experiment. Say I wanted to repel a small piece of lead (or copper, both are readily available to me) about 3.5 grams, how strong of a magnet would I need? Could I just use small neodymium magnets...

Hi, in the case of free electrons gas under the effect of a magnetic field. The hamiltonian of an electron doesn't contain a term of Spin-Magnetic field interaction this means that it contains just the kinetic energy terms. Why is that ?

Friends! I have some things unclear about diamagnetism in matter.Please see attached picture.

For AP Physics or Chemistry, how do we explain the origin of magnetism, and diamagnetism? Saying that "Well, it's a quantum mechanical effect" or "it is a relativistic effect" isn't much help in explaining it's origin. Are there semi-classical explanations or analogies, that high school seniors...

I am studying some solid state physics, in particular magnetism; I have a few questions about the explanations. My understanding is that paramagnetism is primarily an effect of the electron's spin-angular momentum: an unpaired electron will have a dipole moment which preferentially aligns with...

I've read a few papers regarding the effects of a uniform magnetic field on water solutions, but I'm a complete illiterate when it comes to deciphering the jargon. So far, many papers confirm that a uniform magnetic field strengthens hydrogen bonds and can increase the redox potential. I've...

Paramagnetism: How does having an unpaired electron attract it into a magnetic field. Why not repel? Is there any reason or we just know from experiment? Diamagnetism: If the electron spins and therefore magnetic fields cancel, what is causing it to repel from a magnetic field? If it is...

For diamagnetic materials, when an external magnetic field is applied, the electrons having orbital magnetic moment in opposite directions spped up. how does this happen? The direction of magnetic momwnt is given by right hand thum rule. If there is an electron revolving in anticlockwise...

Please confirm & answer the following: An atom exposed to an external B-field will experience both a torque on its orbitals (paramagnetism), and a change in orbital velocities and thereby a change in the magnetic momenta of the orbits (diamagnetism). When the atom has all paired electrons...

Due to diamagnetism in certain substances such as water, does this cause a faster orbital spin due to the change in magnetic dipole moment induced by an external magnet? I'm doing a Science-fair project at the moment and this is eluding me Thank you

[SIZE="4"][FONT="Tahoma"]Why are most of the ionic crystals Diamagnetism ?? Ionic crystals are those crystals that are related to ionic bonds of atoms such as sodium chloride NACL

What is the cause for diamagnetism and other types of magnetism? Is it related to Farady's law or quantum mechanical properties of matter?

I'm doing a computational physics project where I'm looking at the Ising model in 2D and external magnetics field. I start with all the spins in same directions my grid is 30x30 and I use periodic boundry conditions. I start with all the spins in the same direction (+1). I do about 150000...

i have some troubles to understand the lamor precession properly and i need your help to correct my errors: so in order to get the lamor precession: afaik you need something that causes a magnetic moment, e.g. an electron with spin or angular momentum. then you need a homogenous magnetic field...

Can anyone explain what is the cause of diamagnetism... to the extent i know is that the paired electron with opposite spin cancel out each other's magnetic moment... is there something more to this...? and on application of external magnetic filed why does it repel it... thanks for...

Diamagnetism is the property of an object which causes it to create a magnetic field in opposition of an externally applied magnetic field, thus causing a repulsive effect. This is property of all materials. But can be perceive only for materials which atoms or ions have closed shells. Examples...

Hi, I am struggling to see the difference in the origins of diamagnetism and paramagnetism. My understanding of things is that the electrons orbitting an atom constitute a tiny circular current loop, which corresponds to a magnetic dipole moment pointing normal to the plane of that loop...

I need help understanding both of these terms. I know that diamagnetism is when the valence electrons of the material are paired and repel a magnetic field. Does that mean it repels like the North side of a magnet to another North side of a magnet? Or is it they don't attract at all...

Could someone please explain the difference between Perfect Diamagnetism and Superconductors in terms of the Meissner Effect and the magnetic field passing through an element of the sort. Under low temperatures in perfect diamagnetic materials if there is a magnetic field it remains the same...

What properties would an ideal ("perfect") diamagnet necessarilly* have? (*as in in, implied by definition.) This is a spin-off from https://www.physicsforums.com/showthread.php?t=198245", based on the common idea that superconductors are better described as perfect diamagnets than perfect...

Why diamagnetism can't occur in classical mechanics? Where can I know more about that? Thanks

I have a short paper to write this weekend and my physics book doesn't do a very good job of explaining paramagnetism, diamagnetism, and ferromagnetism. Anyone know a good website that gives similarities and differences among those 3 types of magnetism? Thank you.

We know that http://en.wikipedia.org/wiki/Pyrolytic_carbon" layers will have an omni directional cleavage and possibly an omni directional Diamagnetic field. Also, could a http://www.ebteccorp.com/lasercut.html" cut such a thin sheet of Pyrolytic carbon to transparent thickness, If not then...

After a certain external field strength can it collapse?

I am doing an extra-credit report on either Diamagnetism or Paramagnetism, just wondering if any of you can give me any resources on either subject.

Simple question, kind of. I know that paramagnetic materials, when in the presence of a magnetic field will have its dipoles orient with the field while diamagnetic materials when introduced to a magnetic field orient opposite to the field. I've read that this has something to do with Lentz's...