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@ARTICLE{Nair:20179,
author = {Nair, H. S. and Kumar, C. M. N. and Bhat, H. L. and
Elizabeth, S. and Brückel, T.},
title = {{E}ffect of substitution of {Y} on the structural,
magnetic, and thermal properties of hexagonal {D}y{M}n{O}3
single crystals},
journal = {Physical review / B},
volume = {83},
number = {10},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-20179},
pages = {104424},
year = {2011},
note = {Financial support through FIST is acknowledged. The authors
H. L. B. and S. E. wish to thank Department of Science and
Technology, India for financial support. H.S.N. wishes to
thank IFF, Julich for financial support and hospitality.
H.S.N. and C.M.N.K. wish to acknowledge M. Angst and S.
Nandi for useful discussions. J. Persson is thanked for help
with orienting the crystals.},
abstract = {We investigate the structural, magnetic, and specific heat
behavior of the hexagonal manganite Dy0.5Y0.5MnO3 in order
to understand the effect of dilution of Dy magnetism with
nonmagnetic yttrium. In this compound, the triangular Mn
lattice orders antiferromagnetic at T-N(Mn) approximate to
68 K observed experimentally in the derivative of magnetic
susceptibility as well as in specific heat. In addition, a
low-temperature peak at T-N(Dy) similar to 3 K is observed
in specific heat which is attributed to rare earth order.
The T-N(Mn) increases by 9 K compared to that of hexagonal
(h) DyMnO3 while T-N(Dy) is unchanged. A change in slope of
thermal evolution of lattice parameters is observed to occur
at temperature close to T-N(Mn). This hints at strong
magnetoelastic coupling in this geometric multiferroic. In
magnetization measurements, steplike features are observed
when the magnetic field is applied along the c axis which
shift to higher fields with temperature and vanish
completely above 40 K. The presence of different magnetic
phases at low temperature and strong magnetoelastic effects
can lead to such field-induced transitions which resemble
metamagnetic transitions. This indicates the possibility of
strong field-induced effects in dielectric properties of
this material, which is unexplored to date.},
keywords = {J (WoSType)},
cin = {PGI-4 / JCNS-2 / JARA-FIT / JCNS (München) ; Jülich
Centre for Neutron Science JCNS (München) ; JCNS-FRM-II},
ddc = {530},
cid = {I:(DE-Juel1)PGI-4-20110106 / I:(DE-Juel1)JCNS-2-20110106 /
$I:(DE-82)080009_20140620$ /
I:(DE-Juel1)JCNS-FRM-II-20110218},
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)NOSPEC-20140101},
shelfmark = {Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000288895900004},
doi = {10.1103/PhysRevB.83.104424},
url = {https://juser.fz-juelich.de/record/20179},
}