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@ARTICLE{Burghaus:16639,
author = {Burghaus, J. and Sougrati, M. T. and Möchel, A. and
Houben, A. and Hermann, R. and Dronskowski, R.},
title = {{L}ocal ordering and magnetism in {G}a0.9{F}e3.1{N}},
journal = {Journal of solid state chemistry},
volume = {184},
issn = {0022-4596},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {PreJuSER-16639},
pages = {2315 - 2321},
year = {2011},
note = {The FRM II is acknowledged for providing neutron beamtime
on PGAA, and Lea Canella is acknowledged for assistance
during the data acquisition. RH acknowledges support from
the Helmholtz-University Young Investigator Group "Lattice
Dynamics in Emerging Functional Materials". We also thank
DFG for having funded this study.},
abstract = {Prior investigations of the ternary nitride series
Ga1-xFe3+xN (0 <= x <= 1) have indicated a transition from
ferromagnetic gamma'-Fe4N to antiferromagnetic "GaFe3N". The
ternary nitride "GaFe3N" has been magnetically and
spectroscopically reinvestigated in order to explore the
weakening of the ferromagnetic interactions through the
gradual incorporation of gallium into gamma'-Fe4N. A
hysteretic loop at RI reveals the presence of a minority
phase of only 0.1-0.2 $at\%,$ in accord with the sound
two-step synthesis. The composition of the gallium-richest
phase "GaFe3N" was clarified by Prompt Gamma-ray Activation
Analysis and leads to the berthollide formula
Ga0.91(1)Fe3.09(10)N1.05(7). Magnetic measurements indicate
a transition around 8 K, further supported by Mossbauer
spectral data. The weakening of the ferromagnetic coupling
through an increasing gallium concentration is explained by
a simple Stoner argument. In Ga0.9Fe3.1N, the presence of
iron on the gallium site affects the magnetism by the
formation of 13-atom iron clusters. (C) 2011 Elsevier Inc.
All rights reserved.},
keywords = {J (WoSType)},
cin = {JARA-FIT / JCNS-2 / PGI-4},
ddc = {540},
cid = {$I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-2-20110106 /
I:(DE-Juel1)PGI-4-20110106},
pnm = {Grundlagen für zukünftige Informationstechnologien /
Großgeräte für die Forschung mit Photonen, Neutronen und
Ionen (PNI)},
pid = {G:(DE-Juel1)FUEK412 / G:(DE-Juel1)FUEK415},
experiment = {EXP:(DE-MLZ)PGAA-20140101},
shelfmark = {Chemistry, Inorganic $\&$ Nuclear / Chemistry, Physical},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000294835700001},
doi = {10.1016/j.jssc.2011.06.031},
url = {https://juser.fz-juelich.de/record/16639},
}