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Dr. Robert Niemann
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Modulated martensite: why it forms and why it deforms easily
S Kaufmann, R Niemann, T Thersleff, UK Rößler, O Heczko, J Buschbeck, ...
New Journal of Physics 13 (5), 053029, 2011
1442011
The role of adaptive martensite in magnetic shape memory alloys
R Niemann, UK Rößler, ME Gruner, O Heczko, L Schultz, S Fähler
Advanced Engineering Materials 14 (8), 562-581, 2012
962012
Metamagnetic transitions and magnetocaloric effect in epitaxial Ni–Co–Mn–In films
R Niemann, O Heczko, L Schultz, S Fähler
Applied physics letters 97 (22), 222507, 2010
872010
In situ studies of the martensitic transformation in epitaxial Ni–Mn–Ga films
J Buschbeck, R Niemann, O Heczko, M Thomas, L Schultz, S Fähler
Acta materialia 57 (8), 2516-2526, 2009
792009
Tuning avalanche criticality: Acoustic emission during the martensitic transformation of a compressed Ni-Mn-Ga single crystal
R Niemann, J Baró, O Heczko, L Schultz, S Fähler, E Vives, L Manosa, ...
Physical Review B 86 (21), 214101, 2012
402012
Localizing sources of acoustic emission during the martensitic transformation
R Niemann, J Kopeček, O Heczko, J Romberg, L Schultz, S Fähler, ...
Physical Review B 89 (21), 214118, 2014
382014
Reducing the nucleation barrier in magnetocaloric Heusler alloys by nanoindentation
R Niemann, S Hahn, A Diestel, A Backen, L Schultz, K Nielsch, S Fähler
APL Materials 4, 064101, 2016
362016
Modulations in martensitic Heusler alloys originate from nanotwin ordering
ME Gruner, R Niemann, P Entel, R Pentcheva, UK Rößler, K Nielsch, ...
Scientific reports 8 (1), 1-12, 2018
342018
Nucleation and growth of hierarchical martensite in epitaxial shape memory films
R Niemann, A Backen, S Kauffmann-Weiss, C Behler, UK Rößler, ...
Acta Materialia 132, 327-334, 2017
342017
Geometry of Adaptive Martensite in Ni-Mn-based Heusler alloys
R Niemann, S Fähler
Journal of Alloys and Compounds 703, 280-288, 2016
342016
Electronic structure of the austenitic and martensitic state of magnetocaloric Ni-Mn-In Heusler alloy films
P Klaer, HC Herper, P Entel, R Niemann, L Schultz, S Fähler, HJ Elmers
Physical Review B 88 (17), 174414, 2013
342013
Magnetically induced martensite transition in freestanding epitaxial Ni–Mn–Ga films
O Heczko, M Thomas, R Niemann, L Schultz, S Fähler
Applied Physics Letters 94 (15), 152513, 2009
322009
Field-temperature phase diagrams of freestanding and substrate-constrained epitaxial Ni-Mn-Ga-Co films for magnetocaloric applications
A Diestel, R Niemann, B Schleicher, S Schwabe, L Schultz, S Fähler
Journal of Applied Physics 118 (2), 023908, 2015
312015
Epitaxial Ni-Mn-Ga-Co thin films on PMN-PT substrates for multicaloric applications
B Schleicher, R Niemann, A Diestel, R Hühne, L Schultz, S Fähler
Journal of Applied Physics 118 (5), 053906, 2015
272015
Inapplicability of the Maxwell relation for the quantification of caloric effects in anisotropic ferroic materials
R Niemann, O Heczko, L Schultz, S Fähler
International Journal of Refrigeration 37 (1), 281-288, 2014
262014
Failure of the Maxwell relation for the quantification of caloric effects in ferroic materials
R Niemann, O Heczko, L Schultz, S Fähler
5th International Conference on Magnetic Refrigeration at Room Temperature …, 2012
26*2012
Growth of sputter-deposited metamagnetic epitaxial Ni-Co-Mn-In films
R Niemann, L Schultz, S Fähler
Journal of Applied Physics 111 (9), 093909, 2012
252012
Structure and composition of magnetocaloric Ni–Mn–In–Co thin films on the nanoscale—a TEM study
B Erkartal, V Duppel, R Niemann, L Schultz, S Fähler, U Schürmann, ...
Advanced Engineering Materials 14 (8), 710-715, 2012
172012
Reducing thermal hysteresis in epitaxial Ni-Mn-Ga-Co films by transformation cycling
A Diestel, P Chekhonin, R Niemann, W Skrotzki, K Nielsch, S Fähler
Physica Status Solidi B: Basic Solid State Physics, 2017
112017
Nukleation und Wachstum des adaptiven Martensits in epitaktischen Schichten der Formgedächtnislegierung Ni-Mn-Ga
RI Niemann
112015
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Articles 1–20