Structural and magnetocaloric effect of Ln 0.67 Sr 0.33 MnO 3 (Ln=La, Pr and Nd) nanoparticles
Source abstract
Abstract
Abstract The Ln 0.67 Sr 0.33 MnO 3 (Ln=La, Pr and Nd) nanoparticles were prepared by using the sol–gel method. The structural and magnetic properties of the samples were investigated in detail. The X-ray diffraction (XRD) analyses indicate that the La-doped sample crystalizes in rhombohedral perovskite structure and the Pr-doped and Nd-doped samples are mainly composed of orthorhombic perovskite structure phase. The Curie temperature and saturation magnetization are lowered and the phase transition is broadened by the Pr and Nd substitutions when comparing with the La-doped sample. All the samples exhibit significant magnetocaloric effects in a wide temperature range. Under a field change from 0 to 5 T, the maximum values of isothermal entropy change are found to be 2.49, 1.94 and 0.93 J/kg K for the samples with Ln=La, Pr and Nd, respectively, and the corresponding values of relative cooling power reach 225, 265 and 246 J/kg. The results suggest that those nanoparticles could be useful for magnetic refrigeration in a broad temperature range.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Advanced Thermoelectric Materials and Devices · Thermal Expansion and Ionic Conductivity
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. Colossal magnetoresistant materials10.1016/S0370-1573(00)00121-6 ↗
2. CMR manganites10.1088/0022-3727/36/8/201 ↗
3. Review of the magnetocaloric effect in manganite materials10.1016/j.jmmm.2006.07.025 ↗
4. Large magnetic entropy change near room temperature in La0.7(Ca0.27Ag0.03)MnO3 perovskite10.1016/j.jallcom.2010.12.169 ↗
5. Giant and reversible extrinsic magnetocaloric effects in La0.7Ca0.3MnO3 films due to strain10.1038/nmat3463 ↗
6. Room temperature critical behavior and magnetocaloric properties of La0.6Nd0.1(CaSr)0.3Mn0.9V0.1O310.1016/j.ceramint.2013.06.024 ↗
7. Magnetic properties and the phase diagram of La1−xSrxMnO3 for x≤0.2
8. Magnetic properties and specific heat of RMnO3 (R=Pr, Nd)10.1103/PhysRevB.69.064418 ↗
9. Interaction between the d-shells in the transition metals. II. Ferromagnetic compounds of manganese with perovskite structure10.1103/PhysRev.82.403 ↗
10. Low temperature magnetoresistance and the magnetic phase diagram of La1−xCaxMnO310.1103/PhysRevLett.75.3336 ↗
11. Synthesis characterization of magnetic properties in La0.7−xLnxPb0.3MnO3 (Ln=Nd, Gd, Dy, Sm and Y) perovskite compounds10.1016/j.jallcom.2006.09.030 ↗
12. Magnetocaloric properties of doped lanthanum manganites films10.1063/1.360840 ↗
13. Magnetic entropy change in La0.75Ca0.25−xSrxMnO3 perovskites10.1016/S0038-1098(97)10064-3 ↗
14. Magnetocaloric effect in La1−xSrxMnO3 for x=0.13 and 0.1610.1063/1.1288671 ↗
15. Drop of magnetocaloric effect related to the change from first- to second-order magnetic phase transition in La2/3(Ca1−xSrx)1/3MnO310.1063/1.1451892 ↗
16. Large magnetic-entropy change above 300K in CMR materials10.1016/S0304-8853(02)01151-4 ↗
17. Large magnetocaloric effect in La0.845Sr0.155Mn1−xMxO3 (M=Mn, Cu, Co) perovskites10.1002/pssb.200304587 ↗
18. Specific heat anomalies in La1−xSrxMnO3 (0.12≤x≤0.2)10.1103/PhysRevB.71.224432 ↗
19. Large magnetocaloric effect in single crystal Pr0.63Sr0.37MnO310.1063/1.1849554 ↗
20. Large magnetocaloric effect in nanocrystalline Pr0.7Sr0.3MnO310.1063/1.3359810 ↗
21. On the magnetic structure of PrMn2O5
22. Magnetic hyperfine studies of neodymium-iron oxides10.1016/0168-583X(93)95156-Y ↗
23. Magnetic and magnetoresistance properties of Pr0.67Sr0.33MnO3 manganite oxide prepared by ball milling method10.1016/j.jmmm.2012.02.003 ↗
24. Specific heat of Nd0.67Sr0.33MnO310.1103/PhysRevB.59.127 ↗
25. Insulator-metal transition and giant magnetoresistance in La1−xSrxMnO310.1103/PhysRevB.51.14103 ↗
26. Magnetocaloric effect in La0.67Sr0.33MnO3 manganite above room temperature10.1016/j.jmmm.2011.03.036 ↗
27. Perovskite manganites10.1016/S1463-0184(02)00049-7 ↗
28. Magnetocaloric effect and Griffiths-like phase in La0.67Sr0.33MnO3 nanoparticles10.1063/1.3037236 ↗
29. Impact of sintering temperature on room temperature magneto-resistive and magneto-caloric properties of Pr2/3Sr1/3MnO310.1016/j.jallcom.2013.06.040 ↗
30. Low-field magnetocaloric effect in Pr0.5Sr0.5MnO310.1209/epl/i2000-00478-8 ↗
31. Magnetocaloric materials10.1146/annurev.matsci.30.1.387 ↗
32. G.F. Wang, Magnetic and calorimetric study of the magnetocaloric effect in intermetallics exhibiting first-order magnetostructural transitions (Ph.D. thesis), Prensas Universitarias de Zaragoza, 2012.