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This is the brief summary of the dataset and code used in the simulations for the paper "Modeling of pressure-induced magnetic and magnetocaloric effects in dissipative magnetic shape memory alloy systems," accepted in Proceeding of Royal Society A with paper id RSPA-2023-0241.

This repository contains the dataset and code used for simulations presented in the paper "Modeling of pressure-induced magnetic and magnetocaloric effects in dissipative magnetic shape memory alloy systems," which has been accepted in Proceeding of Royal Society A under paper ID RSPA-2023-0241. The project aims to simulate the magnetostructural transition (first-order) and pure phase transition (second-order) in magnetic shape memory alloys. Additionally, a continuum model has been developed to capture adiabatic temperature change and isentropic entropy during the heating and cooling of magnetic shape memory alloys.

Description of the Data and code structure

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The project includes the experimental data and code used to simulate our model.

File list:

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• model2.csv:
• HvsT.csv:
• sigVsT.csv:
• MvsT1.csv:
• MvsT.csv:
• MCE_experiment.csv:

All the experiment data is taken from "Miroshkina ON, Sokolovskiy VV, Baigutlin DR, Zagrebin MA, Taskaev SV, Buchelnikov VD.
2020 Statistical model for the martensitic transformation simulation in Heusler alloys. Physica
B: Condensed Matter 578, 411874." and "Gottschall T. 2016 On the magnetocaloric properties of Heusler compounds: Reversible, time- and size-dependent effects of the martensitic phase transition. PhD thesis Technische Universität Darmstadt."

Data specific information:

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DATA-SPECIFIC INFORMATION FOR: model2.csv

1. Number of variables: 2
2. Number of cases/rows: 38
3. Variable list:
   • The initial column/variable displays the temperature (K) within the purely magnetic phase (austenite).
   • The second column/variable showcases the magnetization dataset during the phase of pure austenitic composition.

DATA-SPECIFIC INFORMATION FOR: HvsT.csv

1. Number of variables: 2
2. Number of cases/rows: 20
3. Variable list:
   • The first column/variable illustrates the crucial magnetic field (T) accountable for the phase transition in the absence of hydrostatic pressure.
   • The second column/variable demonstrates the essential temperature (K) responsible for the phase transition in the absence of hydrostatic pressure.

DATA-SPECIFIC INFORMATION FOR: sigVsT.csv

1. Number of variables: 2
2. Number of cases/rows: 12
3. Variable list:
   • The first column/variable illustrates the critical hydrostatic pressure (GPa) accountable for the phase transition in the absence of a magnetic field.
   • The second column/variable demonstrates the essential temperature (K) responsible for the phase transition in the absence of a magnetic field.

DATA-SPECIFIC INFORMATION FOR: MVsT1.csv

1. Number of variables: 2
2. Number of cases/rows: 55
3. Variable list:
   • The first column/variable displays the temperature (K) during the second order (pure magnetic) transition at 1 T magnetic field and 0.84 GPa hydrostatic pressure.
   • The second column/variable represents the essential magnetization (Am²/kg) during the second-order transition at 1 T magnetic field and 0.84 GPa hydrostatic pressure.

DATA-SPECIFIC INFORMATION FOR: MVsT.csv

1. Number of variables: 6
2. Number of cases/rows: 69
3. Variable list:
   • The first column/variable displays the temperature (K) during the first order(magneto-structural) transition for 1 T magnetic field and in the absence of hydrostatic pressure.
   • The second column/variable represents the magnetization (Am²/kg) during the first-order (magneto-structural) transition for the 1 T magnetic field and in the absence of hydrostatic pressure.
   • The third column/variable displays the temperature (K) during the first order(magneto-structural) transition for 1 T magnetic field and 0.45 GPa hydrostatic pressure.
   • The fourth column/variable represents the magnetization (Am²/kg) during the first order(magneto-structural) transition for 1 T magnetic field and 0.45 GPa hydrostatic pressure.
   • The fifth column/variable displays the temperature (K) during the first order(magneto-structural) transition for 1 T magnetic field and 0.84 GPa hydrostatic pressure.
   • The sixth column/variable represents the magnetization (Am²/kg) during the first order(magneto-structural) transition for 1 T magnetic field and 0.84 GPa hydrostatic pressure.

DATA-SPECIFIC INFORMATION FOR: MCE_experiment.csv

1. Number of variables: 6
2. Number of cases/rows: 19
3. Variable list:
   • The first column/variable displays the temperature (K) during the first order(magneto-structural) transition for 1 T magnetic field change and in the absence of hydrostatic pressure.
   • The second column/variable represents the Magnetocaloric effect(J/kgK) during the first order(magneto-structural) transition for 1 T magnetic field change and in the absence of hydrostatic pressure.
   • The third column/variable displays the temperature (K) during the first-order (magneto-structural) transition for 1 T magnetic field change and 0.45 GPa hydrostatic pressure.
   • The fourth column/variable represents the Magnetocaloric effect(J/kgK) during the first order(magneto-structural) transition for 1 T magnetic field change and 0.45 GPa hydrostatic pressure.
   • The fifth column/variable displays the temperature (K) during the first-order (magneto-structural) transition for 1 T magnetic field change and 0.84 GPa hydrostatic pressure.
   • The sixth column/variable represents the Magnetocaloric effect(J/kgK) during the first order(magneto-structural) transition for 1 T magnetic field change and 0.84 GPa hydrostatic pressure.

Author's Contribution

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Both authors have contributed equally in conceptualization, methodology, and analysis. The first author did all the coding, plots, and most of the manuscript preparation. The second author
participated as a supervisor.

Access Information

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The user can email "avinashthakur@iitb.ac.in" or "krishnendu@aero.iitb.ac.in" to get help with this project.