Critical behavior near room temperature in La0.75Ca0.05Na0.20MnO3 sample. Issue 24 (3rd May 2019)

• Record Type: Journal Article
• Authors: Bouzidi, Souhir; Gdaiem, Mohamed Amara; Dhahri, J.; Hlil, E. K.
• Is Part Of: RSC advances. Volume 9:Issue 24(2019)
• Page Start: 13808
• Page End: 13813
• Publication Date: 2019-05-03
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c9ra00766k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A set of typical M 2 vs. μ 0 H / M for La0.75 Ca0.05 Na0.20 MnO3 sample. Abstract : The critical behavior of La0.75 Ca0.05 Na0.20 MnO3 was studied at around room temperature via magnetization measurements. From the relative slope, we deduced that the Tricritical Mean-Field model was the most suitable model. The estimated critical exponents were found to be β = 0.24 ± 0.004, γ = 0.98 ± 0.065 and δ = 5.08 at T C = 300 K. These critical exponents satisfied the Widom scaling relation δ = 1 + γ / β, implying the reliability of our values. Based on the critical exponents, the magnetization–field–temperature ( M – μ 0 H – T ) data around T C collapsed into two curves, obeying the single scaling equation with ε = ( T − T C )/ T C being the reduced temperature. These results suggest short-range interaction in our sample.