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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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Rifqi Ardiyansyah, gabo...@gmail.com13

Dec 15

Hysterisis loop

You might have to adjust the alloy-fraction. If you change the dimensions to be one unit cell, it

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Hysterisis loop

You might have to adjust the alloy-fraction. If you change the dimensions to be one unit cell, it

Dec 15

SOMASUNDARAM P, gabo...@gmail.com2

Dec 14

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

Dec 14

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

Dec 10

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 -

Dec 10

Maryam, gabo...@gmail.com2

Dec 9

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

Dec 9

Vinod Naik Bhukya, Richard Evans4

Dec 2

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

Dec 2

Rifqi Ardiyansyah

Nov 29

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

Nov 29

Nov 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

Nov 25

Peela baradwaj naidu

Nov 21

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

Nov 21

Peela baradwaj naidu

Oct 30

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

Oct 30

Oct 26

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

Oct 26

Oct 17

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

Oct 17

Oct 16

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

Oct 16

Oct 16

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

Oct 16

Oct 14

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

Oct 14

Ratthaphong Rangngoen, gabo...@gmail.com3

Oct 14

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:

Oct 14

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

Oct 8

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

Oct 8

Li Shan, … Richard Evans4

Sep 15

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

Sep 15

Peela baradwaj naidu, Richard Evans2

Sep 10

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

Sep 10

Peela baradwaj naidu

Aug 27

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

Aug 27

Shubrat Singh, Xu He2

Aug 27

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

Aug 27

Aug 26

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,

Aug 26

Li Shan, gabo...@gmail.com2

Aug 24

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

Aug 24

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

Aug 23

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

Aug 23

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

Aug 23

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

Aug 23

Tong Zhao, gabo...@gmail.com2

Aug 22

Clarification of theta/phi definitions for CMC anisotropy

If it helps, do you have "Initialising spins to new constraint direction (phi, theta)" in

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Clarification of theta/phi definitions for CMC anisotropy

If it helps, do you have "Initialising spins to new constraint direction (phi, theta)" in

Aug 22

الأستاذ لطرش

Aug 13

Small magnetization values from Monte-Carlo simulation

Dear Vampire users and developpers, The exchange coupling parameters were calculated using TB2J and

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Small magnetization values from Monte-Carlo simulation

Dear Vampire users and developpers, The exchange coupling parameters were calculated using TB2J and

Aug 13

Aug 5

yuyangdinuo@gmail.com

Dear Vampire Users, I am now trying to apply stagger torques to the neighboring antiparallel spins in

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yuyangdinuo@gmail.com

Dear Vampire Users, I am now trying to apply stagger torques to the neighboring antiparallel spins in

Aug 5

Xiaoping Wei, … الأستاذ لطرش7

Aug 5

Requested number of atoms outside of valid range

Thank you Gavin it works well now. This is part of my output 0 1 25 0.940688 50 0.887324 75 0.837863

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Requested number of atoms outside of valid range

Thank you Gavin it works well now. This is part of my output 0 1 25 0.940688 50 0.887324 75 0.837863

Aug 5

الأستاذ لطرش

Aug 4

Monte Carlo simulation give wrong Curie Temperature

Dear Vampire users, I'am trying to simulate the curie temperature for a quaternary Heusler alloy

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Monte Carlo simulation give wrong Curie Temperature

Dear Vampire users, I'am trying to simulate the curie temperature for a quaternary Heusler alloy

Aug 4

逄晓霖, … Richard Evans4

Jul 29

Hi , Thank you for the info and updates! Your suggestions are very helpful. And I'm looking

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Hi , Thank you for the info and updates! Your suggestions are very helpful. And I'm looking

Jul 29

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