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Journal article

Magnetoelastic phase diagram of TbNi2B2C

From

Department of Physics, Technical University of Denmark1

National Institute for Materials Science2

Department of Wind Energy, Technical University of Denmark3

Wind Turbine Structures and Component Design, Department of Wind Energy, Technical University of Denmark4

Neutrons and X-rays for Materials Physics, Department of Physics, Technical University of Denmark5

University of Copenhagen6

German Electron Synchrotron7

Technical University of Denmark8

Department of Energy Conversion and Storage, Technical University of Denmark9

Electrofunctional materials, Department of Energy Conversion and Storage, Technical University of Denmark10

Helmholtz Centre Berlin for Materials and Energy11

Ochanomizu University12

...and 2 more

The magnetic phase diagram of the quaternary borocarbide TbNi2B2C is investigated by direct means and by studying magnetically induced modifications of the crystal structure. Detailed superconducting quantum interference device measurements reveal a complex phase diagram with five distinct magnetic phases.

The phase boundaries are mapped out comprehensively. Synchrotron hard x-ray measurements in applied magnetic fields are employed to probe the magnetoelastic distortions throughout the phase diagram. The determination of the wave vectors of these field-induced lattice deformations suggests a range of commensurate spin-slip-type magnetic structures at low temperatures with wave vectors of the form (q,0,0) with q = 6/11 and 5/9.

The proposed magnetic structures yield values of magnetization well in-line with observations. The scattering intensity due to the magnetoelastic deformations exhibits a drastic jump at the phase boundary at 1.3 T and low temperatures.

Language: English
Year: 2018
ISSN: 1550235x , 10980121 , 24699950 and 24699969
Types: Journal article
DOI: 10.1103/PhysRevB.97.224417
ORCIDs: Toft-Petersen, Rasmus , Christensen, Niels Bech , Chen, Yunzhong , Abrahamsen, Asger Bech and 0000-0002-7954-8073

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