Publication detail

Enhanced magnetic field concentration using windmill-like ferromagnets

Bort-Soldevila, N. Cunill-Subiranas, J. Barrera, A. Del-Valle, N. Silhanek, AV. Uhlir, V. Bending, S. Palau, A . Navau, C.

Original Title

Enhanced magnetic field concentration using windmill-like ferromagnets

Type

journal article in Web of Science

Language

English

Original Abstract

Magnetic sensors are used in many technologies and industries, such as medicine, telecommunications, robotics, the Internet of Things, etc. The sensitivity of these magnetic sensors is a key aspect, as it determines their precision. In this article, we investigate how a thin windmill-like ferromagnetic system can hugely concentrate a magnetic field at its core. A magnetic sensor combined with such a device enhances its sensitivity by a large factor. We describe the different effects that provide this enhancement: the thickness of the device and its unique windmill-like geometry. An expression for the magnetic field in its core is introduced and verified using finite-element calculations. The results show that a high magnetic field concentration is achieved for a low thickness-diameter ratio of the device. Proof-of-concept experiments further demonstrate the significant concentration of the magnetic field when the thickness-diameter ratio is low, reaching levels up to 150 times stronger than the applied field. (c) 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Keywords

SENSORS

Authors

Bort-Soldevila, N.; Cunill-Subiranas, J.; Barrera, A.; Del-Valle, N.; Silhanek, AV.; Uhlir, V.; Bending, S.; Palau, A .; Navau, C.

Released

1. 2. 2024

Publisher

AIP Publishing

Location

MELVILLE

ISBN

2166-532X

Periodical

APL Materials

Year of study

12

Number

2

State

United States of America

Pages count

7

URL

https://pubs.aip.org/aip/apm/article/12/2/021123/3266669/Enhanced-magnetic-field-concentration-using

BibTex

@article{BUT188936,
  author="Bort-Soldevila, N. and Cunill-Subiranas, J. and Barrera, A. and Del-Valle, N. and Silhanek, AV. and Uhlir, V. and Bending, S. and Palau, A . and Navau, C.",
  title="Enhanced magnetic field concentration using windmill-like ferromagnets",
  journal="APL Materials",
  year="2024",
  volume="12",
  number="2",
  pages="7",
  doi="10.1063/5.0187035",
  issn="2166-532X",
  url="https://pubs.aip.org/aip/apm/article/12/2/021123/3266669/Enhanced-magnetic-field-concentration-using"
}