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primary topic: Short and long range ordering in La1−xSrxCoO3 cobaltites

Short and long range ordering in La1−xSrxCoO3 cobaltites
type: AcademicArticle
type: Article
abstract: We have carefully studied the relation between the critical and electrical behavior of rhombohedral La1 -xSrxCoO3 (x = 0.2-0.5) compounds prepared by solid-state reactions. The results obtained from analyzing M(T, H) data indicate that and all compounds undergo a second-order phase transition and the ferromagnetic-paramagnetic (FM-PM) transition temperature increase from approximate 182 K for x = 0.2 to 253 K for x = 0.5. Basing on the modified Arrott and Kouvel-Fisher techniques, scaling hypothesis, and critical isotherm analysis, we have determined the critical exponent values characteristic of magnetic order of La1 -xSrxCoO3, with  = 0.361~0.489,  = 1.021~1.346, and = 2.99~4.72. Interestingly, though all compounds are metallic ferromagnets, we have found the phase segregation in magnetic order as x > 0.3, where magnetic interactions tend to change from long-toshort-range FM order together with the absence of the insulating-like behavior at temperatures below 100 K. These phenomena are related to the spatial coexistence of multiple electronic and magnetic phases due to the changes in concentration of cobalt ions, spin-state transitions, and the existence of poor-hole anti-FM and hole-rich FM regions.
date: 2019
volume: 477
is part of: Journal of Magnetism and Magnetic Materials
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository
has document: Short and long range ordering in La1−xSrxCoO3 cobaltites (PDF)
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subject: ISI-indexed journals

Short and long range ordering in La1−xSrxCoO3 cobaltites (PDF)
type: Document

Journal of Magnetism and Magnetic Materials
type: Collection
issn: 03048853

V. Quang N.
type: Person
given name: V. Quang
family name: N.

C. Yu S.
type: Person
given name: C. Yu
family name: S.

The Long Phan
type: Person
given name: The Long
family name: Phan

Thi Anh Ho
type: Person
given name: Thi Anh
family name: Ho

L. Cho S.
type: Person
given name: L. Cho
family name: S.

Short and long range ordering in La1−xSrxCoO3 cobaltites (Other)
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primary topic: Short and long range ordering in La1−xSrxCoO3 cobaltites

ISI-indexed journals
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