Open Access
Crystals, volume 12, issue 5, pages 724
Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3
Novosel Nikolina
1
,
Rivas Góngora David
1
,
Jagličić Zvonko
2, 3
,
Tafra Emil
4
,
Basletić Mario
4
,
Hamzić Amir
4
,
Klaser Teodoro
5
,
Skoko Željko
4
,
Salamon Krešimir
5
,
Kavre Piltaver Ivna
6
,
Petravić Mladen
6
,
Korin-Hamzić Bojana
1
,
Tomić S.
1
,
Gorshunov B.P.
7
,
Zhang Tao
8
,
Ivek Tomislav
1
,
1
Institut za fiziku, Bijenička cesta 46, HR-10000 Zagreb, Croatia
|
2
Institute of Mathematics, Physics and Mechanics, Jadranska 19, 1000 Ljubljana, Slovenia
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3
Faculty of Civil and Geodetic Engineering, University of Ljubljana, Jamova c. 2, 1000 Ljubljana, Slovenia
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4
Department of Physics, Faculty of Science, University of Zagreb, Bijenička cesta 32, HR-10000 Zagreb, Croatia
|
5
Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia
|
6
University of Rijeka, Faculty of Physics and Center for Micro- and Nanosciences and Technologies, Radmile Matejcic 2, 51000 Rijeka, Croatia
|
Publication type: Journal Article
Publication date: 2022-05-19
Inorganic Chemistry
General Chemical Engineering
Condensed Matter Physics
General Materials Science
Abstract
Among transition metal oxides, manganites have attracted significant attention because of colossal magnetoresistance (CMR)—a magnetic field-induced metal–insulator transition close to the Curie temperature. CMR is closely related to the ferromagnetic (FM) metallic phase which strongly competes with the antiferromagnetic (AFM) charge ordered (CO) phase, where conducting electrons localize and create a long range order giving rise to insulator-like behavior. One of the major open questions in manganites is the exact origin of this insulating behavior. Here we report a dc resistivity and magnetization study on manganite La1−xCaxMnO3 ceramic samples with different grain size, at the very boundary between CO/AFM insulating and FM metallic phases x=0.5. Clear signatures of variable range hopping (VRH) are discerned in resistivity, implying the disorder-induced (Anderson) localization of conducting electrons. A significant increase of disorder associated with the reduction in grain size, however, pushes the system in the opposite direction from the Anderson localization scenario, resulting in a drastic decrease of resistivity, collapse of the VRH, suppression of the CO/AFM phase and growth of an FM contribution. These contradictory results are interpreted within the standard core-shell model and recent theories of Anderson localization of interacting particles.
Citations by journals
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1
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Sensors
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Sensors
1 publication, 25%
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Crystals
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Crystals
1 publication, 25%
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New Journal of Chemistry
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New Journal of Chemistry
1 publication, 25%
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Materials
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Materials
1 publication, 25%
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1
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Citations by publishers
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1
2
3
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Multidisciplinary Digital Publishing Institute (MDPI)
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Multidisciplinary Digital Publishing Institute (MDPI)
3 publications, 75%
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Royal Society of Chemistry (RSC)
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Royal Society of Chemistry (RSC)
1 publication, 25%
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1
2
3
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- We do not take into account publications that without a DOI.
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Novosel N. et al. Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3 // Crystals. 2022. Vol. 12. No. 5. p. 724.
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Novosel N., Rivas Góngora D., Jagličić Z., Tafra E., Basletić M., Hamzić A., Klaser T., Skoko Ž., Salamon K., Kavre Piltaver I., Petravić M., Korin-Hamzić B., Tomić S., Gorshunov B., Zhang T., Ivek T., Ivana Čulo M. Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3 // Crystals. 2022. Vol. 12. No. 5. p. 724.
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TY - JOUR
DO - 10.3390/cryst12050724
UR - https://doi.org/10.3390%2Fcryst12050724
TI - Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3
T2 - Crystals
AU - Novosel, Nikolina
AU - Rivas Góngora, David
AU - Jagličić, Zvonko
AU - Tafra, Emil
AU - Basletić, Mario
AU - Klaser, Teodoro
AU - Salamon, Krešimir
AU - Kavre Piltaver, Ivna
AU - Petravić, Mladen
AU - Korin-Hamzić, Bojana
AU - Zhang, Tao
AU - Ivek, Tomislav
AU - Hamzić, Amir
AU - Skoko, Željko
AU - Tomić, S.
AU - Gorshunov, B.P.
AU - Ivana Čulo, Melanie
PY - 2022
DA - 2022/05/19 00:00:00
PB - Multidisciplinary Digital Publishing Institute (MDPI)
SP - 724
IS - 5
VL - 12
SN - 2073-4352
SN - 0172-5076
ER -
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@article{2022_Novosel,
author = {Nikolina Novosel and David Rivas Góngora and Zvonko Jagličić and Emil Tafra and Mario Basletić and Teodoro Klaser and Krešimir Salamon and Ivna Kavre Piltaver and Mladen Petravić and Bojana Korin-Hamzić and Tao Zhang and Tomislav Ivek and Amir Hamzić and Željko Skoko and S. Tomić and B.P. Gorshunov and Melanie Ivana Čulo},
title = {Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3},
journal = {Crystals},
year = {2022},
volume = {12},
publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},
month = {may},
url = {https://doi.org/10.3390%2Fcryst12050724},
number = {5},
pages = {724},
doi = {10.3390/cryst12050724}
}
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Novosel, Nikolina, et al. “Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3.” Crystals, vol. 12, no. 5, May. 2022, p. 724. https://doi.org/10.3390%2Fcryst12050724.