Show simple item record

AuthorTurki, Dorra
AuthorGhouri, Zafar Khan
AuthorAl-Meer, Saeed
AuthorElsaid, Khaled
AuthorAhmad, M.I.
AuthorEasa, Ahmed
AuthorRemenyi, Gyorgy
AuthorMahmood, Sami
AuthorHlil, El Kebir
AuthorEllouze, Mohamed
AuthorElhalouani, Foued
Available date2017-10-03T07:03:12Z
Publication Date2017-09-19
Publication NameMagnetochemistry
Identifierhttp://dx.doi.org/10.3390/magnetochemistry3030028
CitationTurki, D.; Ghouri, Z.K.; Al-Meer, S.; Elsaid, K.; Ahmad, M.I.; Easa, A.; Remenyi, G.; Mahmood, S.; Hlil, E.K.; Ellouze, M.; Elhalouani, F. "Critical Behavior of La0.8Ca0.2Mn1−xCoxO3 Perovskite (0.1 ≤ x ≤ 0.3)". Magnetochemistry 2017, 3, 28.
URIhttp://hdl.handle.net/10576/5660
AbstractThe critical properties of La0.8Ca0.2Mn1−xCoxO3 (x = 0, 0.1, 0.2 and 0.3) compounds were investigated by analysis of the magnetic measurements in the vicinity of their critical temperature. Arrott plots revealed that the paramagnetic PM-ferromagnetic (FM) phase transition for the sample with x = 0 is a first order transition, while it is a second order transition for all doped compounds. The critical exponents β, γ and δ were evaluated using modified Arrott plots (MAP) and the Kouvel-Fisher method (KF). The reliability of the evaluated critical exponents was confirmed by the Widom scaling relation and the universal scaling hypothesis. The values of the critical exponents for the doped compounds were consistent with the 3D-Heisenberg model for magnetic interactions. For x = 0.1, the estimated critical components are found inconsistent with any known universality class. In addition, the local exponent n was determined from the magnetic entropy change and found to be sensitive to the magnetic field in the entire studied temperature range.
SponsorThis work has been supported by the Tunisian Ministry of Scientific Research and Technology and Institute Neel at Grenoble
Languageen
PublisherMDPI
Subjectmanganites
critical behavior
critical exponents
local exponents
TitleCritical Behavior of La0.8Ca0.2Mn1−xCoxO3 Perovskite (0.1 ≤ x ≤ 0.3)
TypeArticle
Issue Number3
Volume Number3
ESSN2312-7481
dc.accessType Open Access


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record