Hi, thank you very much for the question. The dipole interactions truly modifies the hysteresis loop (please see the plots of them at the center of the poster), but for the case of low densities, they do not have a relevant effect in the coercive field, so its values will not differ significantly from those obtained from the Stoner-Wohlfarth model, as can be observed in the plots of the coercive field vs t as a function of the studied densities.
Hello, very interesting work. I have some questions. 1) I think that these models are used for study the magnetization reversion, but for understand a little more, are these simulations similar to a thermal bath?, but in this case the bath is the external magnetic field? 2) I don't understand what means the parameter "t", is it similar to circular external magnetic field?. because the effects in the hysteresis curve are similars. 3) I'm searching something about the s-w model, but I don't find nothing about it, do you have some reference? thanks
Thank you very much for your questions. Lets go by parts:
1) The thermal bath helps to demagnetize the sample, but it does not reverse magnetization. The magnetic field is not a thermal bath, they are two different entities
2) The parameter "t" is the reduced temperature. We put it in that way in order to avoid any parameter of the particles, in such a way that the results of the SW model can be general for all particles. This is a common practice in simulations;
3) I have several references, please write to my email gustavo.saracco@gmail.com so I can give you a few. Thanks again
Comments
Your HRTEM image looks like an agglomerate. Maybe with AFM you can identify the magnetic domains.
1) I think that these models are used for study the magnetization reversion, but for understand a little more, are these simulations similar to a thermal bath?, but in this case the bath is the external magnetic field?
2) I don't understand what means the parameter "t", is it similar to circular external magnetic field?. because the effects in the hysteresis curve are similars.
3) I'm searching something about the s-w model, but I don't find nothing about it, do you have some reference?
thanks
Thank you very much for your questions. Lets go by parts:
1) The thermal bath helps to demagnetize the sample, but it does not reverse magnetization. The magnetic field is not a thermal bath, they are two different entities
2) The parameter "t" is the reduced temperature. We put it in that way in order to avoid any parameter of the particles, in such a way that the results of the SW model can be general for all particles. This is a common practice in simulations;
3) I have several references, please write to my email gustavo.saracco@gmail.com so I can give you a few.
Thanks again