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@ARTICLE{Klobes:1008962,
author = {Klobes, Benedikt and Angst, Manuel and Fenske, Daniela and
Konnur, Chinmay M. and Mahmoud, Abdelfattah and Sougrati,
Moulay Tahar},
title = {{M}agnetism and hyperfine interactions in the hexagonal
polymorph of delafossite {C}u{F}e{O} 2},
journal = {Journal of magnetism and magnetic materials},
volume = {570},
issn = {0304-8853},
address = {Amsterdam},
publisher = {North-Holland Publ. Co.},
reportid = {FZJ-2023-02556},
pages = {170469 -},
year = {2023},
abstract = {The magnetic susceptibility of and hyperfine interactions
in the hexagonal 2H polymorph of delafossite CuFeO were
investigated by SQUID magnetometry and Mössbauer
spectroscopy, respectively, at low temperatures. The
hydrothermally synthesized 2H-CuFeO sample contained a 10
$vol-\%$ -FeO impurity detected by X-ray diffraction, whose
contribution to the susceptibility and hyperfine
interactions were easily distinguishable from the major
2H-CuFeO one. Morphology and indirect optical band gap
investigated by scanning electron microscopy and diffuse
reflectance measurements showed well expected results for a
hydrothermally synthesized delafossite sample. The magnetic
susceptibility of 2H-CuFeO revealed a first
antiferromagnetic like transitions at 16 K and a second
transition at 13.5 K or 10 K depending on measurement
protocol, which points towards modified exchange
interactions as compared to the 3R polymorph. Complementary
Mössbauer measurements revealed complicated spectral shapes
at low temperatures indicating rather complex magnetic
structures and magnetic relaxations above 20 K.},
cin = {JCNS-2 / PGI-4 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000949764900001},
doi = {10.1016/j.jmmm.2023.170469},
url = {https://juser.fz-juelich.de/record/1008962},
}