“Battenberg” structured magnets, new paper published in APL

Our new, cake-themed paper on nanostructured permanent magnets has now been published in Applied Physics Letters. In the paper we present results from micromagnetic simulations that assess the performance of multi-phase nanostructured permanent magnets, whose cross-section resemble that of a Battenberg cake. By including a super-hard outer shell we are able to counteract the effects of thermal fluctuations and surface defects, both of which are detrimental to the performance of such permanent magnets....

November 10, 2014 · Simon

New paper; Thermally-activated coercivity in core-shell permanent magnets

Our new paper titled “Thermally-activated coercivity in core-shell permanent magnets” has been accepted for publication in Journal of Applied Physics. Click here to download the paper as a PDF file. In the paper we describe recent micromagnetics simulations on NdFeB grains that have undergone a dysprosium (Dy) grain boundary diffusion process (GBDP). The super hard (Dy,Nd)FeB shell that is formed during this process stabilizes the grains against thermal fluctuations that can be detrimental to the coercivity of the magnet in high-temperature situations....

October 23, 2014 · Simon

Reading an OpenOffice spreadsheet into Python

Sometimes the best way to manage simulation output data is in a spreadsheet. Or the data you want to use is already in a spreadsheet. Before reading it into Python for numerical analysis or plotting, or reading into xmgrace to plot, etc, it is normal to export the spreadsheet to a CSV or tab-separated file. But then you have two files. And if you do something in the spreadsheet you have to export it again and this is inefficient....

February 28, 2014 · Simon

European Researcher’s Night

Photos from our European Researcher’s Night can now be found at http://www.destinationfuture.eu/fotos UPDATE: The above URLs are now dead.

January 13, 2014 · Simon