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@ARTICLE{Chatterji:130569,
author = {Chatterji, Tapan and Frick, Bernhard and Nair,
Harikrishnan},
title = {{M}agnetic ordering in double perovskites
{R}$_2${C}o{M}n{O}$_6$ ({R} = {Y}, {T}b) investigated by
high resolution neutron spectroscopy.},
journal = {Journal of physics / Condensed matter},
volume = {24},
number = {26},
issn = {1361-648X},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2013-00937},
pages = {266005 -},
year = {2012},
abstract = {We have investigated low energy nuclear spin excitations in
double perovskite compounds R(2)CoMnO(6) (R=Y, Tb) by
inelastic neutron scattering with a high resolution
back-scattering spectrometer. We observed inelastic signals
at about 2.1 μeV for Y(2)CoMnO(6) and also for
Tb(2)CoMnO(6) at T = 2 K in both energy-loss and energy-gain
sides. We interpret these inelastic peaks to be due to the
transitions between the hyperfine split nuclear levels of
the (59)Co nucleus. The inelastic peaks move towards the
central elastic peak and finally merge with it at the
magnetic ordering temperature T(C). The energy of the low
energy excitations decreases continuously and becomes zero
at T(C) ≈ 75 K for Y(2)CoMnO(6) and T(C) ≈ 100 K for
Tb(2)CoMnO(6). For Tb(2)CoMnO(6), which contains magnetic
rare earth ions, additional quasielastic scattering due
presumably to the fluctuations of large Tb magnetic moments
was observed. The present study reveals the magnetic
ordering of the Co sublattice. The results of this
investigation along with that obtained by us for other
compounds indicate the presence of unquenched orbital
moments in some of the Co compounds.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / PGI-4 / JCNS-2},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)PGI-4-20110106 / I:(DE-Juel1)JCNS-2-20110106},
pnm = {422 - Spin-based and quantum information (POF2-422) / 424 -
Exploratory materials and phenomena (POF2-424) / 542 -
Neutrons (POF2-542) / 544 - In-house Research with PNI
(POF2-544) / 54G - JCNS (POF2-54G24)},
pid = {G:(DE-HGF)POF2-422 / G:(DE-HGF)POF2-424 /
G:(DE-HGF)POF2-542 / G:(DE-HGF)POF2-544 /
G:(DE-HGF)POF2-54G24},
experiment = {EXP:(DE-MLZ)External-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22691537},
UT = {WOS:000305640800020},
doi = {10.1088/0953-8984/24/26/266005},
url = {https://juser.fz-juelich.de/record/130569},
}