2012/09/30 by Renwen Li, Feng Li, Jun Fang +4 · 12 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Critical exponent #Exchange interaction #Ferromagnetism #Isothermal process #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetization #Materials science #Phase transition #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Thermodynamics #cond-mat.str-el #physics.chem-ph
paper · pdf · doi:10.1016/j.jallcom.2013.06.028
published in Journal of Alloys and Compounds 577, 303-308 (Elsevier BV) · 23pages, 7figures, 1table, published in Journal of Alloys and Compounds 577 (2013) 303-308
openalex publication_date 2013/06/13 · arxiv created 2016/01/28 · arxiv updated 2016/01/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The critical behaviors of ferromagnet Eu0.5Sr0.5CoO3 arround TC=140.5K have been comprehensively investigated by analyzing a series of isothermal magnetization M(H) curves. Both Modified Arrott plot and Kouvel-Fisher methods give nearly the same critical exponents, which scale nicely the M(H) curves into two different branches below and above TC. The exponents γ=1.044 and δ=3.06 demonstrate the relevance of mean-field characters for this material. The conclusion of mean-field behavior proves a dominant itinerant ferromagnetism (FM) due to a long range exchange interaction in the system. Meanwhile, by using Rhodes-Wohlfarth's criterion [P. Rhodes and E. P. Wohlfarth, Proc. R. Soc. Lond. A 273, 247 (1963)], it is further confirmed that the itinerant FM dominates in the system.