Phase transition in Pr0.5Ca0.5CoO3 and related cobaltites

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10191373" target="_blank" >RIV/00216208:11310/13:10191373 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/13:00423009

Result on the web

<a href="http://link.springer.com/article/10.1140%2Fepjb%2Fe2013-30653-y" target="_blank" >http://link.springer.com/article/10.1140%2Fepjb%2Fe2013-30653-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjb/e2013-30653-y" target="_blank" >10.1140/epjb/e2013-30653-y</a>

Result language

angličtina

Original language name

Phase transition in Pr0.5Ca0.5CoO3 and related cobaltites

Original language description

We present an extensive investigation (magnetic, electric and thermal measurements and X-ray absorption spectroscopy) of the Pr0.5Ca0.5CoO3 and (Pr1-yYy)(0.7)Ca0.3CoO3 (y = 0.0625-0.15) perovskites, in which a peculiar metal-insulator (M-I) transition, accompanied with pronounced structural and magnetic anomalies, occurs at 76 K and 40-132 K, respectively. The inspection of the M-I transition using the XANES data of Pr-L-3-edge and Co-K-edge proofs the presence of Pr4+ ions at low temperatures and indicates simultaneously the intermediate spin to low spin crossover of Co species on lowering the temperature. The study thus definitively confirms the synchronicity of the electron transfer between Pr3+ ions and Co3+/O-4+(3) subsystem and the transition tothe low-spin, less electrically conducting phase. The large extent of the transfer is evidenced by the good quantitative agreement of the determined amount of the Pr4+ species, obtained either from the temperature dependence of the XANES

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GAP204%2F11%2F0713" target="_blank" >GAP204/11/0713: Charge transfer between the transition metal and rare earth ions in perovskites</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European Physical Journal B

ISSN

1434-6028

e-ISSN

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Volume of the periodical

86

Issue of the periodical within the volume

7

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

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UT code for WoS article

000322175100009

EID of the result in the Scopus database

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