Ultracompact Binary Permanent Rare-Earth Magnet with 1.25-T Center Field and Fast-Decaying Stray Field

Jean-Marie Poumirol (1) , Adrien Bercher (2) , Tetiana Slipchenko (3) , Ivan Maggio-Aprile (2) , Christoph Renner , Alexey B Kuzmenko (2)

1 CEMES - Centre d'élaboration de matériaux et d'études structurales
2 UNIGE - Université de Genève = University of Geneva
3 University of Zaragoza - Universidad de Zaragoza [Zaragoza]

We present a very-compact bicomponent-permanent-magnet design capable of generating 1.25 T in a small volume, significantly above the 0.6 T available from a single uniformly magnetized permanent magnet. In addition to the enhanced maximum field, our design drastically limits the stray field present around a standard permanent magnet. These features make it suitable for retrofitting existing experiments with a substantial magnetic field, in particular, scanning probes and optical, Raman, and photoemission spectroscopy, in diverse environments, from ambient to ultrahigh vacuum and over a wide temperature range.

Domaines: Matière Condensée [cond-mat]

Jean-Marie Poumirol, Adrien Bercher, Tetiana Slipchenko, Ivan Maggio-Aprile, Christoph Renner, et al.. Ultracompact Binary Permanent Rare-Earth Magnet with 1.25-T Center Field and Fast-Decaying Stray Field. Physical Review Applied, 2021, 16, ⟨10.1103/physrevapplied.16.044012⟩. ⟨hal-03455372⟩