Jens-Uwe Hoffmann
Helmholtz-Zentrum Berlin
27 Papers
89 Citations
Jens-Uwe Hoffmann is an academic researcher from Helmholtz-Zentrum Berlin. The author has contributed to research in topics: Neutron diffraction & Magnetic structure. The author has an hindex of 9, co-authored 27 publications.
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Papers
Transformation temperatures and magnetoplasticity of Ni-Mn-Ga alloyed with Si, In, Co or Fe
TL;DR: In this paper, the effect of alloying on phase transformation temperatures and occurrence of magnetoplasticity in Ni-Mn-Ga-X (X = Si, In, Co, Fe) alloys is investigated.
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Crystal structure and high-temperature magnetoplasticity in the new Ni–Mn–Ga–Cu magnetic shape memory alloys
TL;DR: In this paper, the effect of alloying on phase transformation temperatures and occurrence of magnetoplasticity in Ni-Mn-Ga-Cu alloys was investigated and the applied alloying had a strong effect on the transition temperatures and crystal structure of martensite.
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Influence of Constraints and Twinning Stress on Magnetic Field-Induced Strain of Magnetic Shape-Memory Alloys
Markus Chmielus,Illya Glavatskyy,Jens-Uwe Hoffmann,Volodymyr A. Chernenko,Rainer Schneider,Peter Müllner +5 more
TL;DR: In this article, the magnetic field induced deformation of hard 14M and soft 10M martensitic samples of Ni-Mn-Ga single crystals was measured and optically observed in a rotating magnetic field in one- and two-end-constrained conditions.
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Incompatible Magnetic Order in Multiferroic Hexagonal DyMnO3
Christian Wehrenfennig,Dennis Meier,Thomas Lottermoser,Thomas Lonkai,Jens-Uwe Hoffmann,N. Aliouane,Dimitri N. Argyriou,Manfred Fiebig +7 more
TL;DR: In this paper, the magnetic order of manganese and rare-earth lattices according to different symmetry representations is observed in multiferroic hexagonal (h-mnO)) lattices by optical secondharmonic generation and neutron diffraction.
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Comparative Microstructural Analysis of NongraphiticCarbons by Wide-Angle X‑ray and Neutron Scattering
Torben Pfaff,Felix Badaczewski,Marc O. Loeh,Alexandra Franz,Jens-Uwe Hoffmann,Manfred Reehuis,Wolfgang G. Zeier,Bernd M. Smarsly +7 more
TL;DR: Non-graphitic carbons (NGCs) represent the most abundant class of sp2-hybridized carbon, materials (coal char coal, activated carbon, etc.) as mentioned in this paper.
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