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@ARTICLE{Jin:862316,
author = {Jin, Wentao and Meven, Martin and Sazonov, Andrew and
Demirdis, S. and Su, Y. and Xiao, Y. and Bukowski, Z. and
Nandi, S. and Brückel, Th.},
title = {{S}pin reorientation of the {F}e moments in
{E}u0.5{C}a0.5{F}e2{A}s2 : {E}vidence for strong interplay
of {E}u and {F}e magnetism},
journal = {Physical review / B},
volume = {99},
number = {14},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2019-02654},
pages = {140402},
year = {2019},
abstract = {Using complementary polarized and unpolarized
single-crystal neutron diffraction, we have investigated the
temperature-dependent magnetic structures of
Eu0.5Ca0.5Fe2As2. Upon $50\%$ dilution of the Eu sites with
isovalent Ca2+, the Eu sublattice is found to be still
long-range ordered below TEu=10 K, in the A-type
antiferromagnetic (AFM) structure. The moment size of Eu2+
spins is estimated to be as large as 6.74(4)μB at 2.5 K.
The Fe sublattice undergoes a spin-density-wave transition
at TSDW=192(2) K and displays an in-plane AFM structure
above TEu. However, at 2.5 K, the Fe2+ moments are found to
be ordered in a canted AFM structure with a canting angle of
14(4)∘ out of the ab plane. The spin reorientation of Fe
below the AFM ordering temperature of Eu provides direct
evidence of a strong interplay between the two magnetic
sublattices in Eu0.5Ca0.5Fe2As2.},
cin = {JCNS-FRM-II / JCNS-2 / PGI-4 / MLZ},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
I:(DE-588b)4597118-3},
pnm = {6212 - Quantum Condensed Matter: Magnetism,
Superconductivity (POF3-621) / 524 - Controlling Collective
States (POF3-524) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (POF3-623) / 6G15 - FRM II / MLZ
(POF3-6G15)},
pid = {G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-524 /
G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
experiment = {EXP:(DE-MLZ)DNS-20140101 / EXP:(DE-MLZ)HEIDI-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000463883700001},
doi = {10.1103/PhysRevB.99.140402},
url = {https://juser.fz-juelich.de/record/862316},
}