Journal Article

FZJ-2019-03191

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Combinatorial evaluation of phase formation and magnetic properties of FeMnCoCrAl high entropy alloy thin film library

Marshal, A. (Corresponding author) ; Pradeep, K. G. ; Music, D. ; Wang, L. ; Petracic, O.FZJ* ; Schneider, J. M.

2019
Macmillan Publishers Limited, part of Springer Nature [London]

This record in other databases:      

Please use a persistent id in citations: http://hdl.handle.net/2128/22245  doi:10.1038/s41598-019-44351-8

Abstract: We report on the influence of the Al content (from 3.5 to 54 at.%) on phase formation and magnetic properties in FeMnCoCrAl high entropy alloy thin film libraries. Al additions to FeMnCoCr crystallizing in the alpha-Mn structure cause the formation of the body centered cubic (BCC) structure. This is consistent with density functional theory predictions as Al additions give rise to a larger stability for the BCC phase compared to the face centered cubic phase (FCC) which can be rationalized by the formation of a pseudogap at the Fermi level indicating the stabilization of the BCC phase over the FCC phase. Al additions to paramagnetic FeMnCoCr induce ferromagnetism. The largest saturation magnetization was measured for the film containing 8 at.% of Al. As the concentration of non-ferromagnetic Al is increased beyond 8 at.%, the number density of the ferromagnetic species is decreased causing a concomitant decrease in magnetization. This trend is consistent with ab initio predictions of the Al concentration induced changes in the magnetic moment. Based on the experimental and theoretical results presented here the effect of the Al concentration on the phase formation and the magnetic properties of FeMnCoCrAl thin film library can be rationalized.

---

Contributing Institute(s):

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

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)
6. QUANTUM MECHANICALLY GUIDED MATERIALS DESIGN (jara0131_20151101) (jara0131_20151101)

Appears in the scientific report 2019

---

Database coverage:
; ; ; ; BIOSIS Previews ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; PubMed Central ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection ; Zoological Record

---