mumax2

Dear mumax community, The minor patch 3.11.1 has now been released, which solves a couple of bugs.

Hello Mumax Community, I am interested in making regions on a surface have different exchange lengths

Thank you so much! This approach worked perfectly for my simulation. I really appreciate your help.

Dear Mumax3 Community, Recently, I planned to implement temperature-dependent magnetic parameters,

I have been working with heavy metal/ferromagnet systems in MuMax3 and studying skyrmion dynamics in

Hi, By default, mumax only has one fixed layer. You'd have to modify the source code for multiple

Hi, In this use-case, J is not directly a spin current. It is a charge current that is used to get

I was trying to mimic this experimental work on simulation . But due to different wave vector it is

Hi, You can do this as something like (assuming the excitation is in x and the bias field is in z.

Hi, This looks to be related to a change made in 3.11 to restrict the demag field so that B_demag=0

Hi Diksha, can you clarify your definition of a momentum profile? Maybe some example figure in some

Thank you again. I will definitely try it. With regards, Diksha On Friday, March 20, 2026 at 9:05:59

Which mumax version did you run your simulations with? Your results might be affected by this bug:

Hi, It is indeed possible. If you can give some more details on how you tried to implement them, we

Hi, Can you give some more detail on what you're having trouble with? The pictures you included

Hi, has anyone tried to simulate the Random Anisotropy Model on Mumax3? I've tried generating

Hi Josh, I am forwarding this mail to you for your attention. I checked the mx dynamics for my code (

Hi, judging by the plot, you just accidentally transposed the k axis with ω axis. I'd recommend

Hi The alignment caused by setting `sub2.msat` is caused by magnetostatic interactions. These can be

Hi, The main practical limitation in normal usage will be your timestep. That is the smallest step

Hello sir, Thank you Sir for your reply. Your suggestion worked well. The code is now running

Hi, The mx3 file seems to be missing. The attached file labeled "mx3_script" seems to be

Dear kc gong, There is signal visible in your plot at a frequency of 0 GHz. You may wish to omit the

If you try to use ext_bubblepos without PBC the spins along the edges of the sample cant slightly

Thank you for your insightful comments. They have provided great guidance for my work. Best regards!

Thank you for your interesting reply! I made tests with square regions, it does not change the

Hi everyone, I am trying to simulate a Skyrmion OR gate using a Y-junction geometry. My goal is for

Hi, how exactly did you try to obtain the dispersion? Which parameters did you use in simulation?

Dear mumax community, I am confused about the parameter “Pol” for a long time. Is the the electrical

I have a question regarding the definition of annihilation time in the context of magnetization

Hi, geom2D.Scale(dx, dy, 1) will rescale the image multiplicatively by that factor. so for instance,