MAGNET Seminar: Monte Carlo Simulations of magnetic properties

On Tuesday, October 22^nd, we will continue with the MAGNET Section seminars. The seminars are held every 2^nd Tuesday, at 9:15.

At this seminar, we will hear a presentation by Master students Mikkel C. Larsen and Mikkel Ravn-Feld on: “Monte Carlo Simulations of magnetic properties in LiMPO₄’’ (see abstract below).
The seminar will take place in Building 307, Room 064.

You can also join the seminar via Zoom (https://dtudk.zoom.us/j/61492165922 )

Abstract

Monte Carlo Simulations of magnetic properties in LiMPO₄

Monte Carlo Simulations (MCS) is a class of simulations that uses randomly generated numbers to obtain numerical results. In our bachelor project, we used a Metropolis Monte Carlo approach which - starting from anisotropy and exchange energies determined from spin wave studies – allows us to determine the magnetic ground states of Lithium Orthophosphates with the chemical formula LiMPO₄ (with M=Mn, Fe, Co, Ni or combinations thereof).  Specifically, we can determine magnetic properties such as susceptibility, magnetic structure and heat capacity.  In the seminar, we will present simulated results from our B.Sc. project, which include

-        Heat capacity and magnetic ground states for different compositions of LiCo_1-xNi_xPO₄ 
-        Phase diagrams and magnetic phases when exposed to external fields. 
-        Neutron diffraction patterns and diffuse magnetic scattering computed from the magnetic structure.

 This is compared to experimental results obtained by neutron scattering. We will also give a short introduction to our current work on developing a more versatile code, which can be applied to a wide range of systems, and not just Lithium Orthophosphates.