Dr Richard F. L. Evans

New paper on ultrafast switching in synthetic ferrimagnets published

Thursday 27 February, 2014

Schematic diagram of all-optical thermally induced magnetic switching

Our new paper published in Applied Physics Letters 104, 082410 (2014) has demonstrated a new possibility for all-optical switching synthetic ferrimagnet, a sandwich of two ferromagnetic materials and a non-magnetic spacer layer. The spacer layer engineers the coupling between the two ferromagnets so that they align opposite to one another. When subjected to an ultrafast laser pulse this structure spontaneously switches its magnetic state representing writing a single bit of data. Read more.

Review of atomistic spin models published

Thursday 20 February, 2014

Image of polygranular magnetic recording media

My review of atomistic models has been published today in Journal of Physics: Condensed Matter. 26, 103202 (2014). Computational science is often termed the third pillar of research, beside experiment and theory, due to its ability to take intractable problems and provide solutions closer to experiment than available from purely analytical theory. In order for computational physics to be reliable, it is essential that the methods be reproducible and that other research groups can implement the same algorithms and that they give the same results. Read more.

Vampire version 3 released

Wednesday 13 November, 2013

Image of lithographic system defined using vampire

Last week I released the latest version of the vampire atomistic code, which now has an official home at vampire.york.ac.uk and manual. The main enhancements include the ability to run vampire on WindowsTM systems, and a largely re-written user interface, which will hopefully make using the code much more intuitive for everyone. Read more.

Video of Heat Assisted Magnetic Recording

Monday 2 September, 2013

Atomistic simulation of Heat Assisted Magnetic Recording (HAMR) from Richard Evans on Vimeo.

I have just posted a video of an atomistic simulation of heat assisted magnetic recording. The model uses a realistic grain structure, with all the grains treated atomistically. Check it out. Read more.

Pretty terminal colour scheme

Sunday 25 August, 2013

Image of terminal window using modified Solarized colour theme.

Command line terminal settings are quite a personal thing for most programmers, and the topic can be almost as controversial as choice of text editor (emacs of course!). I just discovered a really nice cross platform terminal colour scheme called Solarized. Out of the box it's really pretty, but for me the background is a little light. Terminal customisation is really easy in Mac OS X so I darkened the background colour to taste. Read more.