Issue 23, 2020

Analytical magnetostatic model for 2D arrays of interacting magnetic nanowires and nanotubes

Abstract

A fully analytical model to describe the magnetostatic properties of these 2D nanocylinder arrays (tubes and wires) is presented. The model allows calculating the components of the effective demagnetizing field as a function of the cylinder height, inner and outer diameters, and the center-to-center distance. From these components, it is possible to calculate the shape anisotropy of the cylinder, the dipolar interaction between them, and the total magnetostatic energy. The model allows performing calculations very simply, using a simple spreadsheet or open-access software such as Geogebra. This allows analyzing the effect of each geometrical parameter in the different contributions to the magnetostatic energy. Amongst the most interesting findings is that the model describes naturally the magnetization easy-axis reorientation transition induced by the dipolar interaction, for which a general phase diagram has been calculated for both tubes and wires. For the case of nanowires, our results show a very good agreement with previously published results. While for nanotubes, the model predicts that the magnetization easy-axis reorientation transition is frustrated as the tube wall thickness decreases and reaches a critical value even when the distance between tubes is reduced to its lowest possible value.

Graphical abstract: Analytical magnetostatic model for 2D arrays of interacting magnetic nanowires and nanotubes

Supplementary files

Article information

Article type
Paper
Submitted
12 Febr. 2020
Accepted
01 Jūn. 2020
First published
02 Jūn. 2020

Phys. Chem. Chem. Phys., 2020,22, 13320-13328

Analytical magnetostatic model for 2D arrays of interacting magnetic nanowires and nanotubes

Y. Velázquez-Galván and A. Encinas, Phys. Chem. Chem. Phys., 2020, 22, 13320 DOI: 10.1039/D0CP00808G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements