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@ARTICLE{Castellano:397768,
author = {Castellano, Carlo and Berti, Giulia and Ferretti, Maurizio
and Martinelli, Alberto and Cimberle, M. R.},
title = {{S}trong enhancement of the ferromagnetic phase and local
order in {R}u substituted manganites studied by {EXAFS} and
dc magnetizationmeasurements},
journal = {Journal of alloys and compounds},
volume = {663},
issn = {0925-8388},
address = {Lausanne},
publisher = {Elsevier},
reportid = {PUBDB-2017-13415},
pages = {560 - 564},
year = {2016},
note = {© Elsevier B.V.},
abstract = {We report extended X-ray absorption fine structure (EXAFS)
and dc magnetization measurements performed on
(La$_{1-x}$Ca$_x$) (Mn$_{1-}$yRu$_y$)O$_3$ samples (x = 0.37
and 0.75 and y = 0.03 or 0.08).In the nanoscale phase
inhomogeneity scenario characteristic of these complex
oxides, we compare the effects induced by the partial
substitution of Mn with mixed valence non-Jahn-Teller Ru5+
and at most very weak Jahn-Teller Ru$^{4+}$ ions with those
induced by the already studied analogous substitutions of Mn
with non-Jahn-Teller Cr$^{3+}$ or Ni$^{2+}$ or Jahn-Teller
Cu$^{2+}$.We find evidence both from dc magnetization and
EXAFS that the ruthenium doping induces a huge effect,
clearly enhancing (more efficiently than is the case for the
other dopants) the double exchange effect and consequently
the metallic/ferromagnetic phase and the local structural
order at the expenses of the charge-ordered phase component.
In the x = 0.75 long-range charge-ordered system these
effects are much more evident, as expected, while for x =
0.37 the magnetic ion partial substitution does not
significantly modify the metal-insulator and ferromagnetic
transitions, already present in the parent compound.},
cin = {DOOR},
ddc = {670},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
experiment = {EXP:(DE-H253)D-E4-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000369060200076},
doi = {10.1016/j.jallcom.2015.12.183},
url = {https://bib-pubdb1.desy.de/record/397768},
}