Journal Article

FZJ-2022-02189

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnetic properties of the noncentrosymmetric tetragonal antiferromagnet EuPtSi$_3$

Bauer, A. (Corresponding author)Extern*TUM* ; Senyshyn, A.MLZ* ; Bozhanova, R. ; Simeth, W. ; Franz, C.FZJ* ; Gottlieb-Schönmeyer, S. ; Meven, M.FZJ* ; Schrader, T. E.FZJ* ; Pfleiderer, C. (Last author)

2022
APS College Park, MD

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Please use a persistent id in citations: http://hdl.handle.net/2128/31452  doi:10.1103/PhysRevMaterials.6.034406

Abstract: We report a comprehensive study of single crystals of the noncentrosymmetric rare-earth compound EuPtSi$_3$ grown by the optical floating-zone technique. Measurements of the magnetization, ac susceptibility, and specific heat consistently establish antiferromagnetic order of localized Eu2+ moments below the Néel temperature T$_N$=17 K, followed by a second magnetic transition at T$_{N1}$=16 K. For a magnetic field along the easy [001] axis, the magnetic phase diagram is composed of these two phases. For fields applied in the magnetically hard basal plane, two additional phases emerge under magnetic field, where the in-plane anisotropy is weak with [100] being the hardest axis. At the phase transitions, the magnetic properties exhibit hysteresis and discrepancies between differential and ac susceptibility, suggesting slow reorientation processes of mesoscale magnetic textures. Consistently, powder and single-crystal neutron diffraction in zero field identify magnetic textures that are modulated on a length scale of the order of 100 Å, most likely in the form of Néel-type antiferromagnetic cycloids.

Keyword(s): Magnetic Materials (1st) ; Condensed Matter Physics (2nd) ; Magnetism (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS-FRM-II)
2. JCNS-4 (JCNS-4)
3. Heinz Maier-Leibnitz Zentrum (MLZ)
4. Neutronenstreuung (JCNS-1)
5. Streumethoden (JCNS-2)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)
2. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)

Experiment(s):

1. HEiDi: Single crystal diffractometer on hot source (SR9b)
2. BIODIFF: Diffractometer for large unit cells (NL1)
3. SPODI: High resolution powder diffractometer (SR8a)
4. SANS-1: Small angle neutron scattering (NL4a)

Appears in the scientific report 2022

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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