News

03-2022   On the Impact of Additive Manufacturing Processes on the Microstructure and Magnetic Properties of Co–Ni–Ga Shape Memory Heusler Alloys

F. Scheibel, C. Lauhoff, S. Riegg, P. Krooß, E. Bruder, E. Adabifiroozjaei, L. Molina-Luna, S. Böhm, Y. I. Chumlyakov, T. Niendorf, and O. Gutfleisch

in Advanced Engineering Materials

15-02-2022   PhD Graduation Dr. Lukas Pfeuffer

We are happy to congratulate our colleague Lukas Pfeuffer to his successful PhD defense. His PhD thesis Concepts and microstructure design for multicaloric cooling using Ni-Mn-based Heusler compounds  was evaluated with distinction.

12-2021 Functional Materials’ spin-off MagnoTherm Solutions was selected for the highly competitive European Innovation Council (EIC) Accelerator

Read more

 

12-2021 Phase-field modelling of paramagnetic austenite-ferromagnetic martensite transformation coupled with mechanics and micromagnetics

D. Ohmer, M. Yi,  O. Gutfleisch, and B.-X. Xu

in International Journal of Solids and Structures

30-11-2021   PhD Graduation Dr. Dominik Ohmer
We are happy to congratulate our colleague Dominik Ohmer to his defense. His PhD thesis Multi-physics phase-field modeling of magnetic materials was evaluated with distinction.

11-2021 Maximum performance of an active magnetic regenerator

D. Benke, M. Fries, T. Gottschall, D. Ohmer, A. Taubel, K. Skokov, and O. Gutfleisch

in Applied Physics Letters

10-2021 Microstructure engineering of metamagnetic Ni-Mn-based Heusler compounds by Fe-doping: A roadmap towards excellent cyclic stability combined with large elastocaloric and magnetocaloric effects 

L. Pfeuffer, J. Lemke, N. Shayanfar, S. Riegg, D. Koch, A. Taubel, F. Scheibel, N. A. Kani, E. Adabifiroozjaei, L. Molina-Luna, K. P. Skokov, and O. Gutfleisch

in Acta Materialia 

07-2021 Influence of microstructure on the application of Ni-Mn-In Heusler compounds for multicaloric cooling using magnetic field and uniaxial stress

L. Pfeuffer, A. Gràcia-Condal, T. Gottschall, D. Koch, T. Faske, E. Bruder, J. Lemke, A. Taubel, S. Ener, F. Scheibel, K. Durst, K. P. Skokov, L. Mañosa, A. Planes, and O. Gutfleisch

in Acta Materialia 

12-2020 Multicaloric effects in metamagnetic Heusler Ni-Mn-In under uniaxial stress and magnetic field

A.Gràcia-Condal, T. Gottschall, L. Pfeuffer, O. Gutfleisch, A. Planes, L. Mañosa

 

in Applied Physics Reviews

 

9-12-2020   PhD Graduation Dr. Andreas Taubel
We are happy to congratulate our colleague Andreas Taubel to his defense. His PhD thesis Designing Multicaloric Materials with Martensitic Phase Transitions for Future Cooling Applications was evaluated with distinction.

11-2020  Influence of the martensitic transformation kinetics on the magnetocaloric effect in Ni-Mn-In

L. Pfeuffer, T. Gottschall, T. Faske, A. Taubel, F. Scheibel, A. Y. Karpenkov, S. Ener, K. P. Skokov, and O. Gutfleisch

in Physical Review Materials

10-2019   Calculating the magnetocaloric effect in second-order-type material by micromagnetic simulations: A case study on Co2B
D. Ohmer, M. Yi, M. Fries, O. Gutfleisch, B.-X. Xu

in Scripta Materialia

06-2019   Electronic entropy change in Ni-doped FeRh

N. Pérez, A. Chirkova, K.P. Skokov, T.G.Woodcock, O. Gutfleisch, N.V. Baranov, K. Nielsch, G. Schierning

in Materials Today Physics

31-07-2019   Making a Cool Choice: The Materials Library of Magnetic Refrigeration
T. Gottschall, K. P. Skokov, M. Fries, A. Taubel, I. Radulov, F. Scheibel, D. Benke, S. Riegg, O. Gutfleisch

in Advanced Energy Material

01-05-2019   Dynamics of the magnetoelastic phase transition and adiabatic temperature change in Mn1.3Fe0.7P0.5Si0.55
M. Fries, T. Gottschall, F. Scheibel, L. Pfeuffer, K.P. Skokov, I. Skourski, M. Acet, M. Farle, J. Wosnitza, O. Gutfleisch

in Journal of Magnetism and Magnetic Materials

20-02-2019   Computational study on microstructure evolution and magnetic property of laser additively manufactured magnetic material
M. Yi, B.-X. Xu, O. Gutfleisch

in Computational Mechanics

09-04-2019   Press Conference
Representatives of Bonn Regional Office of the European Commission, among them their head Jochen Pöttgen, visit the Functional Materials group at TU Darmstadt to be informed about the ongoing work in the project.

28-01-2019   Magnetic Cooling on TV
“We can store food with refrigerators for quite a long time. Good for us, but bad for the environment.” Broadcasted by the German private TV channel SAT.1, Prof. Gutfleisch and his research team from Functional Materials (TU Darmstadt) was featured regarding the potential of magnetic cooling to make refrigeration more efficient and environmentally friendly – from fundamental research to commercialisation. For the video (in German language), click here 

16 to 18-09-2019   Thermag 2018
International conference on caloric cooling
Thermag VIII took place in Darmstadt and was organized by the functional materials group.
267 experts from 24 different countries visited the conference to exchange their recent research results and discuss the future of the field. The topics covered in the conference were extended for the first time from magnetocaloric refrigeration at room temperature to cover all the different caloric effects that are able to provide cooling at different temperatures.
The next Thermag conference will be held 2020 in College Park (Maryland), USA.

10-09-2018   A multicaloric cooling cycle that exploits thermal hysteresis
Tino Gottschall, Adrià Gràcia-Condal, Maximilian Fries, Andreas Taubel, Lukas Pfeuffer, Lluís Mañosa, Antoni Planes, Konstantin P. Skokov & Oliver Gutfleisch
in Nature Materials (2018)

11-07-2018   A quantitative criterion for determining the order of magnetic phase transitions using the magnetocaloric effect
J.Y. Law, V. Franco, L. Moreno-Ramírez, A. Conde, D. Karpenkov, I. Radulov, K. Skokov, O. Gutfleisch

In cooperation with the University of Sevilla we proposed a quantitative criterion for determining the order of magnetic phase transitions using the magnetocaloric effect. The ideal magnetocaloric material would lay at the borderline of a first-order and a second-order phase transition. Hence, it is crucial to unambiguously determine the order of phase transitions for both applied magnetocaloric research as well as the characterization of other phase change materials. We describe a quantitative fingerprint of first-order thermomagnetic phase transitions and demonstrate the validity of the model for different magnetic materials, composites and inhomogeneous materials.
In Nature Communications (2018) 9:2680
https://www.nature.com/articles/s41467-018-05111-w

13-04-2018   PhD Graduation Dr. Franziska Scheibel
We are happy to congratulate our new colleague Franziska Scheibel to her defense. She did her PhD thesis Influence of hysteresis at magnetostructural transitions on the magnetocaloric properties of Heuslers, Antiperovskites, and Pnictides at the University Duisburg-Essen. 

Visiting Professor at the University of Parma
Oliver Gutfleisch has started a Visiting Professorship at the University of Parma for the period of 2017/2020. He is formally enrolled at the Material Science PhD College of tutors at the University of Parma, and will be involved in the teaching activities as well as the joint supervision of a PhD candidate in an effort to expand and strengthen the international profile of the university. The University of Parma is one of the oldest universities in the world and dates back to the year 962.

Save the Date for Thermag VIII
International Conference on caloric cooling

You are hereby cordially invited to attend Thermag VIII – International Conference on Caloric Cooling, which will be held in Darmstadt, Germany on 16.-20. September 2018. The conference provides a platform for scientists and engineers from all over the world working in the field of caloric materials and devices to get together and discuss their research and ideas.

More information on thermag2018.de

13-07-2017  Darmstadt Symposium
The great transition – The importance of critical metals for green energy technologies
On July 13, 2017, we hosted a one-day symposium at the Orangerie in Darmstadt focusing on how the supply situation of strategic metals can directly impact on the development and cost of advanced materials which form the basis for green energy technologies. The efficient utilisation or substitution of these critical elements with more sustainable and earth abundant elements is the big challenge for the Great Transition from a fossil fuel based society to an economy built on renewable energies. Well-known experts from academia and industry gave Key-note lectures addressing the substitutionability of critical metals and its possible side effects in terms of entering new dependencies. With more than 150 participants the symposium found a very positive resonance and we will make the Darmstadt Symposium a regular event in the future.

Download Abstracts

Chemistry Views

07-04-2017   Cool Research
The European Research Council (ERC) honors Professor Oliver Gutfleisch with an “ERC Advanced Grant” and promotes him with 2.5 million euros over a period of five years. This recognizes outstanding research at the TU Darmstadt for the substitution of critical raw materials and materials for energy technologies.
ERC News

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