<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Critical behavior and magnetocaloric effect of Pr1-xCaxMnO3"^^ . "The critical behavior of Pr1− x Ca x MnO3 samples with x = 0.25, 0.27, and 0.29 has been investigated. Detailed analyses of magnetic-field dependences of magnetization at temperatures around the paramagnetic-ferromagnetic transition, M(H, T), reveal that the samples undergo a second-order magnetic phase transition. The Arrott plot method predicts the values of critical parameters to be T C  ≈ 118 K, β = 0.351 ± 0.003, γ = 1.372 ± 0.002, and δ = 4.90 ± 0.02 for x = 0.25; T C  ≈ 116 K, β = 0.362 ± 0.002, γ = 1.132 ± 0.004, and δ = 4.09 ± 0.03 for x = 0.27; and T C  ≈ 110 K, β = 0.521 ± 0.002, γ = 0.912 ± 0.005, and δ = 2.71 ± 0.02 for x = 0.29. The values of β = 0.351 (for x = 0.25) and β = 0.362 (for x = 0.27) are close to the value β = 0.365 expected for the 3D Heisenberg model, proving an existence of short-range ferromagnetic interactions in these samples. A slight increase in Ca-doping content (x = 0.29) leads to the shift of the β value (=0.521) towards that of the mean-field theory (with β = 0.5) characteristic of long-range ferromagnetic interactions. The samples also exhibit a magnetocaloric effect: around T C of Pr1− x Ca x MnO3 compounds, magnetic-entropy change reaches the maximum values of about 5.0, 4.1, and 2.5 J kg−1 K−1 for x = 0.25, 0.27, and 0.29, respectively, under an applied-field change of 50 kOe. Magnetic-field dependences of the maximum magnetic-entropy change (ΔS max) obey a power law |ΔS max(H)| ∝ Hn , where exponent values n = 0.68–0.74 are close to those obtained from the theoretical relation n = 1 + (β − 1)/(β + γ).\r\nT. A. Ho1, T. D. Thanh1,2, Yu3, D. M. , T. O. Ho4, P. D. Thang5, Anh-Tuan Le6, The-Long Phan1 and S. C. Yu"^^ . "2015" . "117" . "17D122" . . "Journal Applied Physics"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "A. Ho"^^ . "T."^^ . "A. Ho T."^^ . . "Anh Tuan"^^ . "Le"^^ . "Anh Tuan Le"^^ . . "D. Thanh"^^ . "T."^^ . "D. Thanh T."^^ . . "The Long"^^ . "Phan"^^ . "The Long Phan"^^ . . "M. Tartakovsky3"^^ . "D."^^ . "M. Tartakovsky3 D."^^ . . "O. Ho"^^ . "T."^^ . "O. Ho T."^^ . . "C. Yu"^^ . "S."^^ . "C. Yu S."^^ . . "Yikyung"^^ . "Yu"^^ . "Yikyung Yu"^^ . . "Duc Thang"^^ . "Pham"^^ . "Duc Thang Pham"^^ . . . . . "HTML Summary of #1798 \n\nCritical behavior and magnetocaloric effect of Pr1-xCaxMnO3\n\n" . "text/html" . . . "Engineering Physics" . .