prikaz prve stranice dokumenta Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3
  Download
PDF 7.54 MB
Scientific paper - Original scientific paper
Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3
Crystals, 12 (2022), 5; 724. https://doi.org/10.3390/cryst12050724
Novosel, Nikolina; Rivas Góngora, David; Jagličić, Zvonko; Tafra, Emil; Basletić, Mario; Hamzić, Amir; Klaser, Teodoro; Skoko, Željko; Salamon, Krešimir; Kavre Piltaver, Ivna; Petravić, Mladen; Korin-Hamzić, Bojana; Tomić, Silvia; Gorshunov, Boris P.; Zhang, Tao; Ivek, Tomislav; Čulo, Matija More authors...

Institutional repository: Repository of the Faculty of Science

Cite this document

Novosel, N., Rivas Góngora, D., Jagličić, Z., Tafra, E., Basletić, M., Hamzić, A. ... Čulo, M. (2022). Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3. Crystals, 12. (5). doi: 10.3390/cryst12050724

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, 2022. https://doi.org/10.3390/cryst12050724

Novosel, Nikolina, David Rivas Góngora, Zvonko Jagličić, Emil Tafra, Mario Basletić, Amir Hamzić, Teodoro Klaser, et al. "Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3." Crystals 12, no. 5 (2022). https://doi.org/10.3390/cryst12050724

Novosel, N., et al. (2022) 'Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3', Crystals, 12(5). doi: 10.3390/cryst12050724

Novosel N, Rivas Góngora D, Jagličić Z, Tafra E, Basletić M, Hamzić A, and sur.. Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3. Crystals [Internet]. 2022 May 19 [cited 2024 December 24];12(5). doi: 10.3390/cryst12050724

N. Novosel, 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. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:255487. [Accessed: 24 December 2024]

Metadata
Title (english)Grain-Size-Induced Collapse of Variable Range Hopping and Promotion of Ferromagnetism in Manganite La0.5Ca0.5MnO3
AuthorNikolina Novosel
AuthorDavid Rivas Góngora
AuthorZvonko Jagličić
AuthorEmil Tafra
AuthorMario Basletić
AuthorAmir Hamzić
AuthorTeodoro Klaser
AuthorŽeljko Skoko
AuthorKrešimir Salamon
AuthorIvna Kavre Piltaver
AuthorMladen Petravić
AuthorBojana Korin-Hamzić
AuthorSilvia Tomić
AuthorBoris P. Gorshunov
AuthorTao Zhang
AuthorTomislav Ivek
AuthorMatija Čulo
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
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.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleCrystals
Numberingvol. 12, no. 5, 724
e-ISSN2073-4352
DOIhttps://doi.org/10.3390/cryst12050724
URN:NBNurn:nbn:hr:217:255487
Publication2022-05-19
ProjectNumber: IP-2018-01-2730
Title (croatian): Kolektivna dinamika u magnetoelektricima
Acronym: ColDynaMo
Leader: Tomislav Ivek
Jurisdiction: Croatia
Funding stream: Research Projects
ProjectNumber: IP-2013-11-1011
Title (croatian): Jako korelirani elektroni u slojnim organskim materijalima i manganitima: niskofrekventna pobuđenja i nelinearna dinamika
Title (english): Strongly Correlated Electrons in Layered Organics and Manganites: Low Frequency Excitations and Non-linear Dynamics
Acronym: SCEinLOM
Leader: Silvia Tomić
Jurisdiction: Croatia
Funding stream: Research Projects
Document URLhttps://www.mdpi.com/2073-4352/12/5/724
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Received: 16 April 2022. Accepted: 16 May 2022. Published: 19 May 2022.
Created on2024-08-22 10:07:13