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@ARTICLE{Nozaki:188360,
author = {Nozaki, Hiroshi and Harada, Masashi and Ohta, Shingo and
Watanabe, Isao and Miyake, Yasuhiro and Ikedo, Yutaka and
Jalarvo, Niina and Mamontov, Eugene and Sugiyama, Jun},
title = {{L}i diffusive behavior of garnet-type oxides studied by
muon-spin relaxation and {QENS}},
journal = {Solid state ionics},
volume = {262},
issn = {0167-2738},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2015-01766},
pages = {585 - 588},
year = {2014},
abstract = {A diffusive behavior of Li+ ion in a garnet-type oxide, Li5
+ xLa3ZrxNb2 − x012 with x = 0–2, has been investigated
by both a positive muon-spin relaxation (μ+SR) and
quasi-elastic neutron scattering (QENS) technique using
powder samples. The μ+SR results revealed that Li+ ions
start to diffuse above ~ 150 K for the whole samples
measured. The activation energy of Li diffusion (Ea)
estimated from the μ+SR data was in good agreement with Ea
obtained by the QENS measurements. However, both Eas were
about a half of Ea of ionic conductivity of Li+ (σLi),
which was evaluated by AC-impedance measurements on sintered
pellets. This indicated the serious effect of grain boundary
and/or surface on Ea. Furthermore, since the diffusion
coefficient of Li+ estimated by μ+SR is roughly independent
of x, the number of mobile Li+ in the garnet lattice was
found to be the predominant parameter to determine σLi.},
cin = {Neutronenstreuung ; JCNS-1 / JCNS-SNS},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-1-20110106 /
I:(DE-Juel1)JCNS-SNS-20110128},
pnm = {54G - JCNS (POF2-54G24) / 451 - Soft Matter Composites
(POF2-451)},
pid = {G:(DE-HGF)POF2-54G24 / G:(DE-HGF)POF2-451},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000338810500128},
doi = {10.1016/j.ssi.2013.10.014},
url = {https://juser.fz-juelich.de/record/188360},
}