Critical behavior near the ferromagnetic–paramagnetic phase transition in La0.65Eu0.05Sr0.3Mn1−xCrxO3 (x=0.10 and x=0.15).
In: Physica B, Jg. 456 (2015), S. 93-99
Online
academicJournal
Zugriff:
The critical properties of perovskite manganite La 0.65 Eu 0.05 Sr 0.3 Mn 1− x Cr x O 3 ( x =0.10 and x =0.15) around the paramagnetic–ferromagnetic phase transition are investigated through various techniques such as the modified Arrott plot, Kouvel–Fisher method, and critical isotherm analysis. The experimental results have revealed that the samples exhibited the second-order magnetic phase transition and the critical exponents of β and γ for La 0.65 Eu 0.05 Sr 0.3 Mn 1− x Cr x O 3 ( x =0.10) are consistent with the prediction of the mean field model. Furthermore, the estimated critical exponents of La 0.65 Eu 0.05 Sr 0.3 Mn 1− x Cr x O 3 ( x =0.15) are close to those found out by the 3D-Heisenberg model. The magnetization–field–temperature M – H – T behaviors of all compounds at below and above T C were properly renormalized following the scaling of state equation M ( H , ε ) = | ε | β f ± ( H / | ε | β + γ ) , where ε = ( T − T C ) / T C , f + for T > T C and f − for T < T C . This confirms that the obtained values of the critical exponent as well as T C are reasonably accurate and unambiguous. [ABSTRACT FROM AUTHOR]
Titel: |
Critical behavior near the ferromagnetic–paramagnetic phase transition in La0.65Eu0.05Sr0.3Mn1−xCrxO3 (x=0.10 and x=0.15).
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Autor/in / Beteiligte Person: | Bellouz, R. ; Oumezzine, M. ; Hlil, E.K. ; Dhahri, E. |
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Zeitschrift: | Physica B, Jg. 456 (2015), S. 93-99 |
Veröffentlichung: | 2015 |
Medientyp: | academicJournal |
ISSN: | 0921-4526 (print) |
DOI: | 10.1016/j.physb.2014.07.063 |
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