Journal Article

FZJ-2019-04003

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnetocaloric Mn5Si3 and MnFe4Si3 at variable pressure and temperature

Eich, A.FZJ* ; Grzechnik, A. ; Caron, L. ; Cheng, Y. ; Wilden, J. ; Deng, H.MLZ*TUM* ; Hutanu, V.FZJ* ; Meven, M.FZJ* ; Hanfland, M. ; Glazyrin, K. ; Hering, P. ; Herrmann, M. G. ; Ait Haddouch, M.FZJ* ; Friese, K. (Corresponding author)FZJ*

2019
IOP Publ. Bristol

This record in other databases:  

Please use a persistent id in citations: http://hdl.handle.net/2128/22609  doi:10.1088/2053-1591/ab33b3

Abstract: The influence of hydrostatic high pressure on the crystal structures and magnetic properties of magnetocaloric Mn5Si3 and MnFe4Si3 was studied with temperature dependent synchrotron powder diffraction, neutron single-crystal diffraction and magnetization measurements. Mn5Si3 shows no indication for any pressure-induced structural phase transition up to 24.2 GPa at room temperature. MnFe4Si3 exhibits no clear indication for any phase transition at high temperatures (296 K–373 K) and high pressures. Anomalies in the lattice parameter at low temperatures indicate a structural response to magnetic ordering. The gradient of decreasing magnetic transition temperature with increasing pressure is dT C/dP ≈ −15 K GPa−1. The transition temperature in MnFe4Si3 can be tuned by pressure in the temperature range relevant for applications, while pressure has hardly any detrimental influence on other key features relevant to magnetocaloric applications (the width of hysteresis, saturation magnetization, magnetocrystalline anisotropy).

Keyword(s): Magnetic Materials (1st) ; Condensed Matter Physics (2nd) ; Crystallography (2nd) ; Instrument and Method Development (2nd) ; Magnetism (2nd) ; Materials Science (2nd)

---

Contributing Institute(s):

1. Streumethoden (JCNS-2)
2. JCNS-FRM-II (JCNS-FRM-II)
3. Streumethoden (PGI-4)
4. JARA-FIT (JARA-FIT)

Research Program(s):

1. 144 - Controlling Collective States (POF3-144) (POF3-144)
2. 524 - Controlling Collective States (POF3-524) (POF3-524)
3. 6212 - Quantum Condensed Matter: Magnetism, Superconductivity (POF3-621) (POF3-621)
4. 6213 - Materials and Processes for Energy and Transport Technologies (POF3-621) (POF3-621)
5. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Experiment(s):

1. POLI: Polarized hot neutron diffractometer (SR9a)
2. HEiDi: Single crystal diffractometer on hot source (SR9b)

Appears in the scientific report 2019

---

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

---