TY - JOUR
T1 - Magnetic properties of the Laves-type phases Ti2Co3Si and Ti2Fe3Si and their solid solution
AU - Hamm, Christin M.
AU - Gölden, Dominik
AU - Hildebrandt, Erwin
AU - Weischenberg, Jürgen
AU - Zhang, Hongbin
AU - Alff, Lambert
AU - Birkel, Christina S.
N1 - Funding Information:
We would like to thank Prof. Barbara Albert for fruitful discussions and Helmut Schneider for the SEM and EDX measurements. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. Financial support by the German federal state of Hessen through its excellence program LOEWE "RESPONSE" is gratefully acknowledged.
Publisher Copyright:
© The Royal Society of Chemistry 2016.
PY - 2016
Y1 - 2016
N2 - Interest in Fe and Co containing Laves-type phases arises from their promising magnetic properties, especially in the context of magnetostrictive and magnetocaloric materials. Most compounds that are used for these applications consist of rare earth elements that are economically and environmentally problematic. Ti2Co3Si and Ti2Fe3Si are therefore attractive rare earth-free candidates, however their magnetic behavior has not been studied in full detail yet. Consequentially, we have prepared the full solid solution between both phases by arc melting and spark plasma sintering. The samples were subject to comprehensive investigation by means of synchrotron X-ray diffraction, EDX analysis and SQUID measurements. The magnetic properties of the mostly single phase materials generally follow a clear trend with an increase in the magnetic moment with increasing Fe content. Interestingly, we found a sudden drop in magnetic moment between samples Ti2Fe3Si and Ti2(Co0.2Fe0.8)3Si. This phase transition from the ferromagnetic to the antiferromagnetic configuration for these compositions can indeed be confirmed by theoretical calculations.
AB - Interest in Fe and Co containing Laves-type phases arises from their promising magnetic properties, especially in the context of magnetostrictive and magnetocaloric materials. Most compounds that are used for these applications consist of rare earth elements that are economically and environmentally problematic. Ti2Co3Si and Ti2Fe3Si are therefore attractive rare earth-free candidates, however their magnetic behavior has not been studied in full detail yet. Consequentially, we have prepared the full solid solution between both phases by arc melting and spark plasma sintering. The samples were subject to comprehensive investigation by means of synchrotron X-ray diffraction, EDX analysis and SQUID measurements. The magnetic properties of the mostly single phase materials generally follow a clear trend with an increase in the magnetic moment with increasing Fe content. Interestingly, we found a sudden drop in magnetic moment between samples Ti2Fe3Si and Ti2(Co0.2Fe0.8)3Si. This phase transition from the ferromagnetic to the antiferromagnetic configuration for these compositions can indeed be confirmed by theoretical calculations.
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U2 - 10.1039/c6tc02043g
DO - 10.1039/c6tc02043g
M3 - Article
AN - SCOPUS:84981287381
SN - 2050-7534
VL - 4
SP - 7430
EP - 7435
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 31
ER -