Structural, magnetic and magnetocaloric study of La0.7−xEuxSr0.3MnO3 (x=0.1, 0.2 and 0.3) manganites
Source abstract
Abstract
Abstract This paper reports the structural, magnetic and magnetocaloric properties of La 0.7− x Eu x Sr 0.3 MnO 3 ( x =0.1, 0.2 and 0.3) polycrystalline manganites elaborated using the solid-state reaction at high temperatures. The X-ray powder diffraction shows that all the prepared compounds are single phase. La 0.6 Eu 0.1 Sr 0.3 MnO 3 is crystallized in the rhombohedral symmetry, whereas a structural transition towards orthorhombic system is observed for x ≥0.2. Eu doping was found to induce a decrease of the Curie temperature T C from 343 K ( x =0.1) to 272 K ( x =0.3). All compounds undergo a large magnetocaloric effect and have consequently potential applications in magnetic refrigeration domain around room temperature.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Advanced Condensed Matter Physics · Shape Memory Alloy Transformations
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. Review of the magnetocaloric effect in manganite materials10.1016/j.jmmm.2006.07.025 ↗
2. Oxidation–reduction behavior of undoped and Sr-doped LaMnO nonstoichiometry and defect structure10.1016/0022-4596(89)90053-4 ↗
3. Colossal magnetoresistance in La–Ca–Mn–O ferromagnetic thin films10.1063/1.358119 ↗
4. Observation of large low‐field magnetoresistance in trilayer perpendicular transport devices made using doped manganate perovskites10.1063/1.118031 ↗
5. Characterization of transport and magnetic properties in thin film La0. 67(CaxSr1−x)0.33MnO3 mixtures10.1063/1.370162 ↗
6. Temperature dependent changes of the Mn 3d and 4p bands near TC in colossal magnetoresistance systems: XANES study of La1−xCaxMnO310.1103/PhysRevB.61.R9237 ↗
7. Influence of the substitution of Sm, Gd, and Dy for La in La0.7Sr0.3MnO3 on its magnetic and electric properties and strengthening effect on room-temperature CMR10.1016/S1002-0721(09)60014-4 ↗
8. Structural, transport, and magnetic properties in the Ti-doped manganites LaMn1−xTixO3 (0≤x≤0.2)10.1016/j.ssc.2005.08.005 ↗
9. A profile refinement method for nuclear and magnetic structures10.1107/S0021889869006558 ↗
10. T. Roisnel, J. Rodriguez-Carvajal, Proceedings of the Seventh European Powder Diffraction Conference, EPDIC 7, (2000).
11. Effective ionic radii in oxides and fluorides
12. Magnetic and magnetocaloric properties of Pr0.6−xEuxSr0.4MnO3 manganese oxides10.1016/j.ssc.2011.07.027 ↗
13. Structural, magnetic and magnetocaloric properties in La0.5−xRexCa0.5MnO3 manganites (x=0; 0.1 and Re=Gd, Eu and Dy)10.1016/j.jallcom.2012.09.036 ↗
14. Magnetic transport behavior of nano-crystalline Pr0.67A0.33MnO3(A=Ca, Sr, Pb and Ba) manganites10.1016/j.jallcom.2009.01.029 ↗
15. Bogdan · 2004
16. Buschow · 2003
17. High-pressure neutron-diffraction study of the metallization process in PrNiO310.1103/PhysRevB.52.9248 ↗
18. Magnetocaloric effect from indirect measurements: Magnetization and heat capacity10.1063/1.370767 ↗
19. Morrish · 1965
20. 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 ↗
21. Magnetocaloric effect in polycrystalline (La0. 5Gd0. 2)Sr0. 3MnO310.1016/S0304-8853(01)00822-8 ↗
22. Magnetocaloric materials10.1146/annurev.matsci.30.1.387 ↗
23. Magnetoelastic coupling influence on the magnetocaloric effect in ferromagnetic materials10.1016/j.jmmm.2003.12.870 ↗
24. Magnetocaloric effect in Er- and Eu-substituted ferromagnetic La–Sr manganites10.1016/j.jmmm.2004.11.337 ↗
25. Variational mean-field approach to the double-exchange model10.1103/PhysRevB.63.054411 ↗
26. Metamagnetic transition and susceptibility maximum in an itinerant- electron system10.1103/PhysRevB.47.11211 ↗
27. Landau · 1976 · 5
28. Pressure dependence of Curie temperature and magnetisation in itinerant ferromagnets10.1016/0375-9601(82)90058-5 ↗
29. A generalization of the Inoue-Shimizu model10.1016/0921-4526(89)90068-9 ↗
30. Metamagnetism, giant magnetoresistance and magnetocaloric effects in RCo2-based compounds in the vicinity of the Curie temperature10.1016/S0921-4526(02)01099-2 ↗
31. Above room temperature magnetic transition and magnetocaloric effect in La0.66Sr0.34MnO310.3938/jkps.60.1587 ↗
32. Effect of barium-deficiency on the structural, magnetic, and magnetocaloric properties of La0.6Sr0.2Ba0.2−x◻xMnO3 (0≤x≤0.15)10.1063/1.4792730 ↗