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This group is a forum for all users of the vampire atomistic simulation software package to discuss any issues related to running and compiling the software and future developments of the code, i.e. feature requests.

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SOMASUNDARAM P, gabo...@gmail.com2

Jan 10

Finding the system size

The VAMPIRE version 6.0 source code at [1] has: Line 139: // Set system dimensions !Angstroms Line

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Finding the system size

The VAMPIRE version 6.0 source code at [1] has: Line 139: // Set system dimensions !Angstroms Line

Jan 10

Peela baradwaj naidu, gabo...@gmail.com3

Jan 5

Unstable magnetisation after equilibration

Thanks for the reply Gavin, I was under the impression that that the first part of the program where

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Unstable magnetisation after equilibration

Thanks for the reply Gavin, I was under the impression that that the first part of the program where

Jan 5

Gavin Abo, Vinod Naik Bhukya3

Jan 4

Re: STT - keeping magnetic moment fixed for pinned layer

Adding the CoFeB interface would be an improvement on the simulation model to align to when

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Re: STT - keeping magnetic moment fixed for pinned layer

Adding the CoFeB interface would be an improvement on the simulation model to align to when

Jan 4

Rifqi Ardiyansyah, … Vinod Naik Bhukya33

12/29/25

Hysterisis loop

You can go ahead, it's even faster when using vampire-parallel Pada Sel, 30 Des 2025 11:04, Vinod

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Hysterisis loop

You can go ahead, it's even faster when using vampire-parallel Pada Sel, 30 Des 2025 11:04, Vinod

12/29/25

Vinod Naik Bhukya, gabo...@gmail.com3

12/29/25

circle geometry

I will try the patch. Thank you so much for the reply. gabo...@gmail.com 在 2025年12月28日星期日上午10:14:08

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circle geometry

I will try the patch. Thank you so much for the reply. gabo...@gmail.com 在 2025年12月28日星期日上午10:14:08

12/29/25

Vinod Naik Bhukya, gabo...@gmail.com3

12/24/25

Plotting Magnetization of a specific material in the stack

Thank you so much gabo...@gmail.com 在 2025年12月24日星期三下午4:46:32 [UTC+8] 的信中寫道： If I have three

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Plotting Magnetization of a specific material in the stack

Thank you so much gabo...@gmail.com 在 2025年12月24日星期三下午4:46:32 [UTC+8] 的信中寫道： If I have three

12/24/25

Vinod Naik Bhukya, Gavin Abo2

12/24/25

Hysteresis loop abrupt changes

Maybe looking at the 'snapshots' could provide you with some insight into why it is happening

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Hysteresis loop abrupt changes

Maybe looking at the 'snapshots' could provide you with some insight into why it is happening

12/24/25

SOMASUNDARAM P, gabo...@gmail.com2

12/14/25

Finding the Values

Sometimes the values are given in a publication when you are trying to reproduce their results. When

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Finding the Values

Sometimes the values are given in a publication when you are trying to reproduce their results. When

12/14/25

HANIF YUANDI WIDYANDARU, gabo...@gmail.com4

12/10/25

Kitaev interaction

Yes, you need to provide in the unit cell file (ucf) the interactions both ways: i -> j and j -

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Kitaev interaction

Yes, you need to provide in the unit cell file (ucf) the interactions both ways: i -> j and j -

12/10/25

Maryam, gabo...@gmail.com2

12/9/25

Scaling DFT exchange values for MnFe2O4 input

I believe the Hamiltonian and exchange energy equations should be known from what was used to compute

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Scaling DFT exchange values for MnFe2O4 input

I believe the Hamiltonian and exchange energy equations should be known from what was used to compute

12/9/25

Vinod Naik Bhukya, Richard Evans4

12/2/25

vampire on HPC server

Thank you so much. richard....@gmail.com 在 2025年12月2日星期二下午6:35:46 [UTC+8] 的信中寫道： Hi, You need an MPI

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vampire on HPC server

Thank you so much. richard....@gmail.com 在 2025年12月2日星期二下午6:35:46 [UTC+8] 的信中寫道： Hi, You need an MPI

12/2/25

Rifqi Ardiyansyah

11/29/25

Hello Vampire User Let me introduce myself, I'm Rifqi Ardiyansyah, a Physics undergraduate

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Hello Vampire User Let me introduce myself, I'm Rifqi Ardiyansyah, a Physics undergraduate

11/29/25

11/25/25

Looking for Guidance on Field-Cooling

Hello VAMPIRE Users, I'm working on the field-cooling calculations, and I'm a bit unsure

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Looking for Guidance on Field-Cooling

Hello VAMPIRE Users, I'm working on the field-cooling calculations, and I'm a bit unsure

11/25/25

Peela baradwaj naidu

11/21/25

NULL lines in output file

Hello VAMPIRE users, Has anyone faced this type of blank lines and output breaking errors while

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NULL lines in output file

Hello VAMPIRE users, Has anyone faced this type of blank lines and output breaking errors while

11/21/25

Peela baradwaj naidu

10/30/25

documentation on domain wall program

Hello VAMPIRE users, Could someone point me to resouces on how to use domain_wall.cpp it looks there

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documentation on domain wall program

Hello VAMPIRE users, Could someone point me to resouces on how to use domain_wall.cpp it looks there

10/30/25

10/26/25

Re: Simulate reactangulat monolayer

Have you tried adding unit-cell-category keywords to the .mat file? Two links with more about the

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Re: Simulate reactangulat monolayer

Have you tried adding unit-cell-category keywords to the .mat file? Two links with more about the

10/26/25

10/17/25

VAMPIRE workshop at FAST Conference, Phuket, Thailand 2-6 Feb 2026

Dear VAMPIRE users, I wanted to let everyone know about the upcoming VAMPIRE workshop at the FAST

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VAMPIRE workshop at FAST Conference, Phuket, Thailand 2-6 Feb 2026

Dear VAMPIRE users, I wanted to let everyone know about the upcoming VAMPIRE workshop at the FAST

10/17/25

10/16/25

Constructing UCF File for 2D Tetragonal MoX3 (P4/mmm) (FM and AFM )

Dear VAMPIRE User Support Team, I hope this message finds you well. I am currently working on

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Constructing UCF File for 2D Tetragonal MoX3 (P4/mmm) (FM and AFM )

Dear VAMPIRE User Support Team, I hope this message finds you well. I am currently working on

10/16/25

10/16/25

Constructing UCF File for 2D Tetragonal MoX3 (P4/mmm) (FM and AFM )

Dear VAMPIRE User Support Team, I hope this message finds you well. I am currently working on

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Constructing UCF File for 2D Tetragonal MoX3 (P4/mmm) (FM and AFM )

Dear VAMPIRE User Support Team, I hope this message finds you well. I am currently working on

10/16/25

10/14/25

Question about total m(z) and system temperature

Hi everyone, I'm trying to simulate one of the GdFeCo examples provided in the tutorial, but I

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Question about total m(z) and system temperature

Hi everyone, I'm trying to simulate one of the GdFeCo examples provided in the tutorial, but I

10/14/25

Ratthaphong Rangngoen, gabo...@gmail.com3

10/14/25

Question about mn2au unit cell

Thank you very much for your response. I will try it. Kind Regards, Book On Tue, Oct 14, 2025 at 11:

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Question about mn2au unit cell

Thank you very much for your response. I will try it. Kind Regards, Book On Tue, Oct 14, 2025 at 11:

10/14/25

Peela baradwaj naidu, gabo...@gmail.com2

10/8/25

Different checkpoint flags

You probably want to use restart. However, you may read about the difference between restart and

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Different checkpoint flags

You probably want to use restart. However, you may read about the difference between restart and

10/8/25

Li Shan, … Richard Evans4

9/15/25

How to set UCF files for two different layers of materials?

Hi, You can get from BCC to BCT (body-centred tetragonal) which is the same as FCC with the correct c

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How to set UCF files for two different layers of materials?

Hi, You can get from BCC to BCT (body-centred tetragonal) which is the same as FCC with the correct c

9/15/25

Peela baradwaj naidu, Richard Evans2

9/10/25

I think you need a bigger systems size to stabilise the domain wall. For small systems, the exchange

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I think you need a bigger systems size to stabilise the domain wall. For small systems, the exchange

9/10/25

Peela baradwaj naidu

8/27/25

Domain wall pinning

Hello VAMPIRE users , I am currently working with a custom program that combines field pulse and

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Domain wall pinning

Hello VAMPIRE users , I am currently working with a custom program that combines field pulse and

8/27/25

Shubrat Singh, Xu He2

8/27/25

Query Regarding Discrepancy in Tc Calculation of CrI3

Hello, I am a TB2J developer and there are a few things to clarify. The TB2J_examples are for

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Query Regarding Discrepancy in Tc Calculation of CrI3

Hello, I am a TB2J developer and there are a few things to clarify. The TB2J_examples are for

8/27/25

8/26/25

Re: Huge Energy Discrepancy (Order of Magnitude) Between Zero-Field Cooled State and Subsequent Warming Simulation

Dear Christopher, This might be due to average vs instantaneous energy (positive indicates unstable,

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Re: Huge Energy Discrepancy (Order of Magnitude) Between Zero-Field Cooled State and Subsequent Warming Simulation

Dear Christopher, This might be due to average vs instantaneous energy (positive indicates unstable,

8/26/25

Li Shan, gabo...@gmail.com2

8/24/25

How to generate Neel domain walls?

Picture of a Néel wall from Figure 1 (a) of [1]. The domain wall transition from up to down at the

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How to generate Neel domain walls?

Picture of a Néel wall from Figure 1 (a) of [1]. The domain wall transition from up to down at the

8/24/25

Peela baradwaj naidu, … gabo...@gmail.com5

8/23/25

Custom temperature profile

As shown below, it looks like the interpolated temperature pulse can be obtained in the output file

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Custom temperature profile

As shown below, it looks like the interpolated temperature pulse can be obtained in the output file

8/23/25

Karunakaran M (RC2133002011015), … gabo...@gmail.com4

8/23/25

Regarding Curie temperature calculation for Full Heusler alloy(Co2MnAl)

In your log file, I see the following error list: 23-08-2025 [10:20:06] Error! Exchange interaction

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Regarding Curie temperature calculation for Full Heusler alloy(Co2MnAl)

In your log file, I see the following error list: 23-08-2025 [10:20:06] Error! Exchange interaction

8/23/25

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