Magnetic ground state and the spin-state transitions in YBaCo2O5.5.
Result description
The crystal and magnetic structure of the perovskite-like, oxygen deficient cobalt oxide YBaCo2O5.5 has been studied by means of neutron and X-ray diffraction in the 10?300 K temperature range. The magnetic ground state is characterized by a coexistenceof two distinct antiferromagnetic phases. In the first one, the ionic moments of high-spin Co3+ ions in the pyramidal sites are ordered in a spiral arrangement, while octahedral sites are non-magnetic due to presence of low-spin Co3+ ions. The arrangement in the second phase is collinear of the G-type, with non-zero moments both in pyramidal (high-spin Co3+ ions) and octahedral sites (presumably a mixture of the low- and high-spin states).
Keywords
spin arrangements in magnetically ordered materialsneutron diffraction
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Magnetic ground state and the spin-state transitions in YBaCo2O5.5.
Original language description
The crystal and magnetic structure of the perovskite-like, oxygen deficient cobalt oxide YBaCo2O5.5 has been studied by means of neutron and X-ray diffraction in the 10?300 K temperature range. The magnetic ground state is characterized by a coexistenceof two distinct antiferromagnetic phases. In the first one, the ionic moments of high-spin Co3+ ions in the pyramidal sites are ordered in a spiral arrangement, while octahedral sites are non-magnetic due to presence of low-spin Co3+ ions. The arrangement in the second phase is collinear of the G-type, with non-zero moments both in pyramidal (high-spin Co3+ ions) and octahedral sites (presumably a mixture of the low- and high-spin states).
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
IAA100100611: Magnetism and the insulator-metal transition in the Co3+/Co4+ perovskites.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Physical Journal B
ISSN
1434-6028
e-ISSN
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Volume of the periodical
70
Issue of the periodical within the volume
3
Country of publishing house
DE - GERMANY
Number of pages
8
Pages from-to
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UT code for WoS article
000269211000004
EID of the result in the Scopus database
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Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BM - Solid-state physics and magnetism
Year of implementation
2009