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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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Vinod Naik Bhukya, … Richard Evans5

Mar 28

Thank you so much Professor Richard and Gavin. I have installed CUDA version successfully. richard...

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Thank you so much Professor Richard and Gavin. I have installed CUDA version successfully. richard...

Mar 28

Shipra Saini, gabo...@gmail.com2

Mar 25

I don't know what issue or error message from the program you are encountering. I'm providing

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I don't know what issue or error message from the program you are encountering. I'm providing

Mar 25

Vinod Naik Bhukya, … gabo...@gmail.com5

Mar 20

Regarding Checkpoint

I believe you are referring to the past post at [1] that mentions uniaxial anisotropy direction. For

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Regarding Checkpoint

I believe you are referring to the past post at [1] that mentions uniaxial anisotropy direction. For

Mar 20

Shipra Saini, … gabo...@gmail.com5

Mar 15

regarding test.data file

Thank you very much! It worked well On Sun, 15 Mar 2026 at 6:38 PM, gabo...@gmail.com <gabo13279@

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regarding test.data file

Thank you very much! It worked well On Sun, 15 Mar 2026 at 6:38 PM, gabo...@gmail.com <gabo13279@

Mar 15

Tiago Silva, gabo...@gmail.com4

Mar 3

Material Indexing in UCF File

material[2]:unit-cell-category = 2 * correction Em terça-feira, 3 de março de 2026 às 08:22:47 UTC-3,

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Material Indexing in UCF File

material[2]:unit-cell-category = 2 * correction Em terça-feira, 3 de março de 2026 às 08:22:47 UTC-3,

Mar 3

Tiago Silva, Richard Evans3

Mar 2

Custom geometry input for Vampire (pyramidal XYZ structure)

Thank you very much Dr. Evans. I was working on the UCF file, and in the end everything worked out. I

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Custom geometry input for Vampire (pyramidal XYZ structure)

Thank you very much Dr. Evans. I was working on the UCF file, and in the end everything worked out. I

Mar 2

Rifqi Ardiyansyah, … gabo...@gmail.com46

Feb 13

Hysterisis loop

Thank you for your help so far, I am very grateful to you and everyone. Pada Senin, 09 Februari 2026

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Hysterisis loop

Thank you for your help so far, I am very grateful to you and everyone. Pada Senin, 09 Februari 2026

Feb 13

bhat umar, gabo...@gmail.com2

Feb 9

Hysteresis of MnZnSb

One possible cause might be use of a low damping. A higher damping may be need for the hysteresis

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Hysteresis of MnZnSb

One possible cause might be use of a low damping. A higher damping may be need for the hysteresis

Feb 9

J, gabo...@gmail.com2

Feb 2

Implementation of six-fold anisotropy.

Not sure how much it will help, but there is an article by JB Collings et al. titled "

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Implementation of six-fold anisotropy.

Not sure how much it will help, but there is an article by JB Collings et al. titled "

Feb 2

Vinod Naik Bhukya, … Richard Evans8

Jan 26

Roughness-seed points and circular geometry-issues

Hi Vinod, all, Actually it looks like you are trying to do intermixing (diffusion between layers),

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Roughness-seed points and circular geometry-issues

Hi Vinod, all, Actually it looks like you are trying to do intermixing (diffusion between layers),

Jan 26

Soufiane BARHOUMI, gabo...@gmail.com2

Jan 23

visualization using rasmol

Did you click on one of the Display options such as Ball & Stick? Maybe the example where

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visualization using rasmol

Did you click on one of the Display options such as Ball & Stick? Maybe the example where

Jan 23

markusme...@gmail.com, … Richard Evans4

Jan 23

Bug in UCF & materials file parser in Vampire 7.0.0

Dear Peela, Richard, thank you very much for the clarification and the quick help! Just following the

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Bug in UCF & materials file parser in Vampire 7.0.0

Dear Peela, Richard, thank you very much for the clarification and the quick help! Just following the

Jan 23

Peela baradwaj naidu

Jan 20

Help with magnetostatic parameters

Hello VAMPIRE Users, I need some help with magnetosatic parameters in my simulation. I am studying

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Help with magnetostatic parameters

Hello VAMPIRE Users, I need some help with magnetosatic parameters in my simulation. I am studying

Jan 20

Tulshidas Darvade, gabo...@gmail.com2

Jan 20

how to calculated exchange interactions using DFT

TB2J [1] seems to be a popular choice because it can generate input files for VAMPIRE. It has it own

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how to calculated exchange interactions using DFT

TB2J [1] seems to be a popular choice because it can generate input files for VAMPIRE. It has it own

Jan 20

Tulshidas Darvade, gabo...@gmail.com2

Jan 20

How to corelate experimental Tc and MH hystersis loop in CoFe2O4 and CoFe2-xAlO4

For getting started, there is the following. Curie temperature simulation tutorial: https://vampire.

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How to corelate experimental Tc and MH hystersis loop in CoFe2O4 and CoFe2-xAlO4

For getting started, there is the following. Curie temperature simulation tutorial: https://vampire.

Jan 20

jbs.panag...@gmail.com, gabo...@gmail.com2

Jan 17

Missing Vampire 7.0 binary packages

I cannot help with the Ubuntu binary package on the website that in the prior 5.0 version provided

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Missing Vampire 7.0 binary packages

I cannot help with the Ubuntu binary package on the website that in the prior 5.0 version provided

Jan 17

Debidutta Pradhan, gabo...@gmail.com2

Jan 17

Changing the element name giving same output

Hi, The material-name changes labeling in the output files and not the material's parameters. The

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Changing the element name giving same output

Hi, The material-name changes labeling in the output files and not the material's parameters. The

Jan 17

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

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

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