129 citations · 448 across the 8 of their papers we have counts for
6 papers · 1 filter
The efficiency and the demagnetization field of a general Halbach cylinder
R. Bjørk, A. Smith, C. R. H. Bahl
The maximum magnetic efficiency of a general multipole Halbach cylinder of order is found as function of . The efficiency is shown to decrease for increasing absolute value…
Metamaterial anisotropic flux concentrators and magnetic arrays
R. Bjørk, A. Smith, C. R. H. Bahl
A metamaterial magnetic flux concentrator is investigated in detail in combination with a Halbach cylinder of infinite length. A general analytical solution to the field is determi…
Determining the minimum mass and cost of a magnetic refrigerator
R. Bjørk, A. Smith, C. R. H. Bahl +1
An expression is determined for the mass of the magnet and magnetocaloric material needed for a magnetic refrigerator and these are determined using numerical modeling for both par…
Comparison of adjustable permanent magnetic field sources
R. Bjørk, C. R. H. Bahl, A. Smith +1
A permanent magnet assembly in which the flux density can be altered by a mechanical operation is often significantly smaller than comparable electromagnets and also requires no el…
An optimized magnet for magnetic refrigeration
R. Bjørk, C. R. H. Bahl, A. Smith +2
A magnet designed for use in a magnetic refrigeration device is presented. The magnet is designed by applying two general schemes for improving a magnet design to a concentric Halb…
Optimization and improvement of Halbach cylinder design
R. Bjørk, C. R. H. Bahl, A. Smith +1
In this paper we describe the results of a parameter survey of a 16 segmented Halbach cylinder in three dimensions in which the parameters internal radius, $r_{\mathrm{\scriptsize{…