Metal-insulator transition and the Pr3+/Pr4.+ valence shift in (Pr1-yYy)0.7Ca0.3CoO3.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F10%3A00352107" target="_blank" >RIV/68378271:_____/10:00352107 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Metal-insulator transition and the Pr3+/Pr4.+ valence shift in (Pr1-yYy)0.7Ca0.3CoO3.

Original language description

The magnetic, electric, and thermal properties of the (Ln1-yYy0.7Ca0.3CoO3 perovskites (Ln=Pr,Nd) were investigated down to very low temperatures. The main attention was given to a peculiar metal-insulator (M-I) transition, which is observed in the praseodymium based samples with y=0.075 and 0.15 at TM-I=64 K and 132 K, respectively. The study suggests that the transition, reported originally in Pr0.5Ca0.5CoO3, is not due to a mere change in cobalt ions from the intermediate to the low-spin states but is associated also with a significant electron transfer between Pr3+ and Co3+ /Co4+ sites, so that the praseodymium ions occur below TM-I in a mixed Pr3+ /Pr4+ valence.

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/GA202%2F09%2F0421" target="_blank" >GA202/09/0421: Magnetic polarons in cobaltites</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

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

Name of the periodical

Physical Review. B

ISSN

1098-0121

e-ISSN

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Volume of the periodical

82

Issue of the periodical within the volume

16

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

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UT code for WoS article

000282508400006

EID of the result in the Scopus database

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