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Jonathan Maes
2
7/15/25
mumax 3.11 is available
Dear mumax community, The minor patch 3.11.1 has now been released, which solves a couple of bugs.
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mumax 3.11 is available
Dear mumax community, The minor patch 3.11.1 has now been released, which solves a couple of bugs.
7/15/25
kc gong
2:33 AM
seeking help for FMR simulation of YIG thin film
dear everyone: I'm recently working on simulating ferromagnetic resonance (FMR) in BIYIG thin
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seeking help for FMR simulation of YIG thin film
dear everyone: I'm recently working on simulating ferromagnetic resonance (FMR) in BIYIG thin
2:33 AM
Manjushree Maity Res. Scholar, Physics, IIT(BHU)
,
Josh Lauzier
3
Feb 11
File Mismatch error for long B_field Sweep
Thank you sir for your response. I attached the script in this email. Best regards, Manju On Thu, Feb
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File Mismatch error for long B_field Sweep
Thank you sir for your response. I attached the script in this email. Best regards, Manju On Thu, Feb
Feb 11
ΙΩΑΝΝΗΣ ΠΑΝΑΓΙΩΤΟΠΟΥΛΟΣ
Feb 10
Egdes: Another possible source of error in ext_bubblepos !
If you try to use ext_bubblepos without PBC the spins along the edges of the sample cant slightly
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Egdes: Another possible source of error in ext_bubblepos !
If you try to use ext_bubblepos without PBC the spins along the edges of the sample cant slightly
Feb 10
JEWELL KAYCEE
, …
Антон Луценко
4
Feb 10
The propagation characteristics of spin waves
Thank you for your insightful comments. They have provided great guidance for my work. Best regards!
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The propagation characteristics of spin waves
Thank you for your insightful comments. They have provided great guidance for my work. Best regards!
Feb 10
ΙΩΑΝΝΗΣ ΠΑΝΑΓΙΩΤΟΠΟΥΛΟΣ
,
Josh Lauzier
5
Feb 9
Region Specific Custom Fields?
Thank you for your interesting reply! I made tests with square regions, it does not change the
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Region Specific Custom Fields?
Thank you for your interesting reply! I made tests with square regions, it does not change the
Feb 9
reshma davis
Feb 8
Subject: Skyrmion merging failure while performing OR gate using Y shaped geometry
Hi everyone, I am trying to simulate a Skyrmion OR gate using a Y-junction geometry. My goal is for
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Subject: Skyrmion merging failure while performing OR gate using Y shaped geometry
Hi everyone, I am trying to simulate a Skyrmion OR gate using a Y-junction geometry. My goal is for
Feb 8
Sreya Pal
,
Антон Луценко
2
Feb 3
Dispersion relation of vertical directional coupler
Hi, how exactly did you try to obtain the dispersion? Which parameters did you use in simulation?
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Dispersion relation of vertical directional coupler
Hi, how exactly did you try to obtain the dispersion? Which parameters did you use in simulation?
Feb 3
Hying
Feb 2
What's the electrical current polarization "Pol"?
Dear mumax community, I am confused about the parameter “Pol” for a long time. Is the the electrical
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What's the electrical current polarization "Pol"?
Dear mumax community, I am confused about the parameter “Pol” for a long time. Is the the electrical
Feb 2
amandeep kaur
Jan 30
definition of annihilation time in the context of magnetization
I have a question regarding the definition of annihilation time in the context of magnetization
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definition of annihilation time in the context of magnetization
I have a question regarding the definition of annihilation time in the context of magnetization
Jan 30
Payal Bhattacharjee
,
Josh Lauzier
2
Jan 29
Scaling the bitmap to pixel
Hi, geom2D.Scale(dx, dy, 1) will rescale the image multiplicatively by that factor. so for instance,
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Scaling the bitmap to pixel
Hi, geom2D.Scale(dx, dy, 1) will rescale the image multiplicatively by that factor. so for instance,
Jan 29
DongHi Yang
,
Josh Lauzier
3
Jan 19
simulation Magnetic Force Microscopy (MFM) unit in Mumax
Dear Josh, Thank you for your detail explained the MFM in mumax3 and compared it with Ubermag. Your
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simulation Magnetic Force Microscopy (MFM) unit in Mumax
Dear Josh, Thank you for your detail explained the MFM in mumax3 and compared it with Ubermag. Your
Jan 19
Shiwei Meng
Jan 19
Temperature gradient Spin wave
Hi I am currently conducting research on using temperature gradients to excite spin waves in Mumax.
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Temperature gradient Spin wave
Hi I am currently conducting research on using temperature gradients to excite spin waves in Mumax.
Jan 19
Harrison Jin
,
Josh Lauzier
5
Jan 16
Setting OVF as a custom field term
I understand, I will give it a try. Thank you very much for your help and time! Respectfully,
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Setting OVF as a custom field term
I understand, I will give it a try. Thank you very much for your help and time! Respectfully,
Jan 16
Chenghao Yang
,
Josh Lauzier
3
Jan 16
How to implement customized in-plane “shape anisotropy” per region in an easy-plane anisotropy system
Hi Josh, Thank you very much for the clear and detailed explanation — that makes perfect sense. In my
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How to implement customized in-plane “shape anisotropy” per region in an easy-plane anisotropy system
Hi Josh, Thank you very much for the clear and detailed explanation — that makes perfect sense. In my
Jan 16
Aman Khosla
, …
Lars Moreels
6
Jan 14
Distinct Landé Factors in Magnetic Sublattices
Hi all The gyromagnetic ratio in mumax+ has now been promoted to the Parameter class in PR#119,
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Distinct Landé Factors in Magnetic Sublattices
Hi all The gyromagnetic ratio in mumax+ has now been promoted to the Parameter class in PR#119,
Jan 14
Dushyant Singh
,
Jonathan Maes
2
Jan 14
Regarding old mumax3.10 compiled .zip files
Hi Dusyant, There is a link to the older .zip files at the bottom left of the "downloads"
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Regarding old mumax3.10 compiled .zip files
Hi Dusyant, There is a link to the older .zip files at the bottom left of the "downloads"
Jan 14
Shiwei Meng
,
Josh Lauzier
3
Jan 14
something about dispersion relation
Hi, The main issue is that you are using a sin() excitation instead of a sinc(). This will only
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something about dispersion relation
Hi, The main issue is that you are using a sin() excitation instead of a sinc(). This will only
Jan 14
Shiwei Meng
,
Josh Lauzier
3
Jan 14
parameters prolems
Hi i modified my code and it displayed right ,thank you for your answer 在2026年1月13日星期二 UTC+8 14:43:46
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parameters prolems
Hi i modified my code and it displayed right ,thank you for your answer 在2026年1月13日星期二 UTC+8 14:43:46
Jan 14
Payal Bhattacharjee
,
Josh Lauzier
5
Jan 14
Problem in applying a radial current under SOT to an annular ring
Thank you, Josh, for the confirmation and clarification. On Wed, 14 Jan, 2026, 12:50 pm Josh Lauzier,
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Problem in applying a radial current under SOT to an annular ring
Thank you, Josh, for the confirmation and clarification. On Wed, 14 Jan, 2026, 12:50 pm Josh Lauzier,
Jan 14
8067_Siddharth Yadav
,
Josh Lauzier
4
Jan 14
Magneto Optic Kerr Effect
Hi, I am not aware of an existing tool that can do this. But it should be pretty straightforward to
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Magneto Optic Kerr Effect
Hi, I am not aware of an existing tool that can do this. But it should be pretty straightforward to
Jan 14
Huan Kiat Koh
, …
Felipe Garcia
6
Jan 13
Discrepancy when using PBC
Hi Huan Kiat Koh, 300x300nm thin film with no PBC, versus a 100x100nm thin film with PBC(1,1,0) are
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Discrepancy when using PBC
Hi Huan Kiat Koh, 300x300nm thin film with no PBC, versus a 100x100nm thin film with PBC(1,1,0) are
Jan 13
纪家清
, …
Josh Lauzier
10
Jan 12
Seeking assistance regarding spin-wave excitation.
Thank you for taking your time to reply. According to the article, the simulation for this figure was
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Seeking assistance regarding spin-wave excitation.
Thank you for taking your time to reply. According to the article, the simulation for this figure was
Jan 12
yuheon lee
,
Josh Lauzier
2
Jan 12
heat generation loss calculation
Hi, There is no built in function, but you can save each energy or the total energy by adding them to
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heat generation loss calculation
Hi, There is no built in function, but you can save each energy or the total energy by adding them to
Jan 12
Tianyu Yang
, …
啊伟
6
Jan 9
The frequency different of SW dispersion relation in Mumax and OOMMF
dear sir i download that python package,but i met some problems using it,and i don not get any useful
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The frequency different of SW dispersion relation in Mumax and OOMMF
dear sir i download that python package,but i met some problems using it,and i don not get any useful
Jan 9
Qxiao
Jan 7
seeking help with magnetoelastic couping simulation
I am using the magnetoelastic module to calculate the influence of magnetoelastic coupling on the
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seeking help with magnetoelastic couping simulation
I am using the magnetoelastic module to calculate the influence of magnetoelastic coupling on the
Jan 7
juan li
, …
Qxiao
6
Jan 7
Seeking Help with Magnetoelectric Coupling Simulation in Mumax3
I am currently encountering the same problem as you did. When applying strain or displacement to the
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Seeking Help with Magnetoelectric Coupling Simulation in Mumax3
I am currently encountering the same problem as you did. When applying strain or displacement to the
Jan 7
qinfa luo
,
Jonathan Maes
2
Jan 6
GPU running simultaneously
Hi, If you specify multiple input scripts in the mumax3 command, like mumax3 input1.mx3 input2.mx3 ..
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GPU running simultaneously
Hi, If you specify multiple input scripts in the mumax3 command, like mumax3 input1.mx3 input2.mx3 ..
Jan 6
yanlong lee
,
Jonathan Maes
2
Jan 6
Inquiry Regarding Output Differences in B_demag and B_eff Between Versions 3.10 and 3.11
Dear yanlonglee, This was indeed changed in 3.11 to fix a bug where, when the simulation contains
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Inquiry Regarding Output Differences in B_demag and B_eff Between Versions 3.10 and 3.11
Dear yanlonglee, This was indeed changed in 3.11 to fix a bug where, when the simulation contains
Jan 6
Vijay R
,
Josh Lauzier
2
Jan 6
Hopfion nucleation
Hi, The most recent mumax release has HopfionCompactSupport(float64, float64). Otherwise I don't
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Hopfion nucleation
Hi, The most recent mumax release has HopfionCompactSupport(float64, float64). Otherwise I don't
Jan 6
A2025
, …
Anne Bernand-Mantel
5
12/30/25
Question on simulating chiral bubble
Dear All, Thank you for all the helpful replies. Experimentally, we observe topological Hall signals
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Question on simulating chiral bubble
Dear All, Thank you for all the helpful replies. Experimentally, we observe topological Hall signals
12/30/25