Critical behavior study of Pr1−xSrxMnO3 and Nd1−xSrxMnO3 with x = 1/2

Oleaga, A.; Salazar, A.; Hatnean, Monica Ciomaga

doi:10.1016/j.jallcom.2016.04.315

Cited by 10 publications

(1 citation statement)

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“…The relevant information about the critical behaviour of the heat capacity and fitting procedures can be found in refs. [28,29]. Figure 4(b) shows the temperature variation of the heat capacity along with the non-linear fit using the expression (14).…”

Section: Magnetocaloric Propertiesmentioning

confidence: 99%

Large magnetocaloric effect and critical behaviour analysis in Gd ₂ Cu ₂ In

Kumar

Nair

Sahu

et al. 2018

EPL

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The ternary intermetallic compound Gd2Cu2In crystallizes in the Mo2Fe2B-type structure with the space group P 4/mbm. The compound undergoes a ferromagnetic-paramagnetic (FM-PM) phase transition at 94.1 K and large magnetocaloric effect has been observed over a wide range of temperature. The isothermal magnetic entropy change (ΔSm) and adiabatic temperature change (ΔT ad ) were observed to be 13.8 J/kg • K and 6.5 K for 7 T applied field. We have employed a modified Arrott plot (MAP) and Kouvel-Fisher (KF) procedures to estimate the critical exponents near the FM-PM phase transition. Critical exponents β = 0.312(2) and γ = 1.080(5) are estimated through a non-linear fitting. The β value is close to the three-dimensional (3D) Ising value, whereas γ and δ values lie closer to the mean-field values. Scaled magnetic isotherms collapse into two branches below and above TC in accordance with a single scaling equation. Specific-heat measurements show a λ-type peak near 94 K indicating long-range magnetic ordering. The specific-heat exponent α was estimated by a non-linear fitting using the function .5 ). The fitting in the temperature range −0.025 < < 0.025 yields α = 0.11(3).

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Section: Magnetocaloric Propertiesmentioning

confidence: 99%