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@ARTICLE{Kozlenko:205480,
author = {Kozlenko, Denis and Rutkauskas, A. V. and Dang, N. T. and
Golosova, N. O. and Kichanov, Sergey and Dubrovinsky, Leonid
and Liermann, Hanns-Peter and Morgenroth, Wolfgang and
Savenko, B. N.},
title = {{P}ressure-induced antiferromagnet-ferromagnet transition
and a change in the spin state of {C}o in
${L}a_{0.5}{B}a_{0.5}{C}o{O}_{2.8}$},
journal = {JETP letters},
volume = {100},
number = {6},
issn = {1090-6487},
address = {Heidelberg [u.a.]},
publisher = {Springer},
reportid = {PUBDB-2015-00044},
pages = {380 - 384},
year = {2014},
note = {(c) Pleiades Publishing, Inc. Post referee fulltext in
progress. Embargo ab 04 Dec 2014.},
abstract = {The crystal and magnetic structures of anion-deficit
cobaltite La0.5Ba0.5CoO2.8 have been studied by theX-ray and
neutron diffraction methods at high pressures up to 30 and 6
GPa, respectively. A structure transi-tion from the cubic
phase with symmetry Pm m to the tetragonal phase with
symmetry P4/mmm has beenobserved in this compound at P ≈ 3
GPa. It is accompanied by the change of the ground
antiferromagneticstate of the G type to the ferromagnetic
state because of a change in the electronic configuration of
Co3+ ions.Possible mechanisms of the observed magnetic phase
transition, as well as the role of the superexchange
inter-actions between Co3+ ions in various spin states in
the formation of magnetic properties, have been
discussed.Pressure induced change in the magnetic state of
La0.5Ba0.5CoO2.8 significantly differs from related
stoichi-ometric compounds La0.5A0.5CoO3.0 (A = Sr, Ca),
where the ground ferromagnetic state is formed and thesign
of the pressure dependence of the Curie temperature depends
on the element A.},
cin = {DOOR / FS-PE},
ddc = {530},
cid = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-PE-20120731},
pnm = {PETRA Beamline P02.2 (POF2-54G14)},
pid = {G:(DE-H253)POF2-P02.2-20140410},
experiment = {EXP:(DE-H253)P-P02.2-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000345965800006},
doi = {10.1134/S0021364014180052},
url = {https://bib-pubdb1.desy.de/record/205480},
}