All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

Electrical resistivity and thermopower measurements of the hole- and electron-doped cobaltites LnCoO3.

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F08%3A00313198" target="_blank" >RIV/68378271:_____/08:00313198 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Electrical resistivity and thermopower measurements of the hole- and electron-doped cobaltites LnCoO3.

  • Original language description

    Two perovskite cobaltites, LaCoO3 and DyCoO3 lightly doped on Co sites by Mg2+ or Ti4+ ions, were investigated by the electric resistivity and thermopower measurements up to 800?1000 K. The study shows that both kinds of charge carriers induce magnetic states on surrounding Co3+ sites and form thus thermally stable polarons of large total spin. Their itinerancy is characterized by low-temperature resistivity, which is of Arrhenius type for the hole (Co4+) -doped samples, while an unusual dependence 1/T^n (n=8?10) is observed for the electron (Co2+) -doped samples. At higher temperatures, additional hole carriers are massively populated in the Co3+ background, leading to a resistivity drop.

  • Czech name

    Měření elektrického odporu a termosíly děrově a elektronově dopovaných kobaltitů LnCoO3.

  • Czech description

    Dva reprezentanti perovskitů s kobaltem, LaCoO3 a DyCoO3, dopované v poloze Co kationty Mg2+ a Ti4+, byly zkoumány z hlediska elektrického odporu a termosíly do 800-1000 K. Stuidum ukázalo, že oba druhy nositelů náboje dávají vzniknout magnetickým stavůmna okolních Co3+ a vytváří tak teplotně stabilní polarony s velkým celkovým spinem. Neobvyklý typ teplotní závislosti odporu, 1/T^n (n=8?10), je pozorován pro elektronově dopované (Co2+) vzorky.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BM - Solid-state physics and magnetism

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/IAA100100611" target="_blank" >IAA100100611: Magnetism and the insulator-metal transition in the Co3+/Co4+ perovskites.</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Physical Review. B

  • ISSN

    1098-0121

  • e-ISSN

  • Volume of the periodical

    78

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    8

  • Pages from-to

  • UT code for WoS article

    000258190000091

  • EID of the result in the Scopus database