Structure and transport properties of La1-xSrxMnO3 granular ceramics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00473951" target="_blank" >RIV/68378271:_____/17:00473951 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1361-6463/aa54e7" target="_blank" >http://dx.doi.org/10.1088/1361-6463/aa54e7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6463/aa54e7" target="_blank" >10.1088/1361-6463/aa54e7</a>

Result language

angličtina

Original language name

Structure and transport properties of La1-xSrxMnO3 granular ceramics

Original language description

Two granular ceramics were prepared by spark plasma sintering (SPS) at 600–800 ˚C and classical ceramic sintering (CCS) at 900 ˚C using molten salt synthesized nanoparticles of the composition La0.53Sr0.47MnO3 and ≈ 40 nm size. Both the SPS and CCS products essentially retain the two-phase magnetic structure of the starting nanoparticles, which consist of a ferromagnetic FM core and an A-type AFM shell. After the sintering, the AFM phase forms a 10–15 nm thick spacer between neighbouring FM granules. This assembly retains reasonable conductivity down to the lowest temperatures, and it still gives rise to a large negative magnetoresistance. In a detailed analysis of the low-field magnetoconductance and high-field magnetoconductance effects, which are related to the field-induced alignment of the FM granules and spin canting in the AFM matrix, respectively, we conclude that the bulk conductivity is governed by resonant tunnelling.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

<a href="/en/project/GA15-10088S" target="_blank" >GA15-10088S: Magnetism of manganite particles and their formations</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

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

Name of the periodical

Journal of Physics D-Applied Physics

ISSN

0022-3727

e-ISSN

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Volume of the periodical

50

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

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UT code for WoS article

000394099000001

EID of the result in the Scopus database

2-s2.0-85011298631