Microstructure, magnetocaloric effect and near tricritical mean-field critical behavior of La0.67Ca0.33-xKxMnO3 porous nanospheres prepared by solvothermal method
Source abstract
Abstract
In this study, La 0.67Ca 0.33-xK xMnO 3 porous nanospheres with K + replacing Ca 2+ were prepared by the solvothermal method. The microstructures, surface valence, magnetic properties, magnetocaloric effect and critical parameters of magnetic phase transition were investigated. The structural characterization showed that the grain size of La 0.67Ca 0.33-xK xMnO 3 exhibited an increasing and then decreasing trend with the increase of K + doping. The magnetic testing of La 0.67Ca 0.33-xK xMnO 3 revealed that K + doping increased the phase transition temperature of the system and modified the magnetic interactions before and after the phase transition temperature. As a result, the critical behavior of the magnetic phase transition was affected with K + doping. When x = 0.05 and 0.1, the critical behavior of samples exhibited similarities to the tricritical mean-field model. Furthermore, K + doping enhanced the magnetic refrigeration ability of the system, with the maximum magnetic entropy reaching 5.99 J/kg K for K-0.05.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Advanced Condensed Matter Physics · High-pressure geophysics and materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (55)
Show source-provided references
1. Effect of alloying on the giant magnetocaloric effect of Gd5 (Si2Ge2)10.1016/S0304-8853(96)00759-7 ↗
2. Giant magnetocaloric effect of MnAs1− xSbx in the vicinity of first-order magnetic transition10.1016/S0921-4526(02)01822-7 ↗
3. Exploring La (Fe, Si) 13-based magnetic refrigerants towards application10.1016/j.scriptamat.2012.05.039 ↗
4. A criterion for enhancing the giant magnetocaloric effect:(Ni–Mn–Ga)—a promising new system for magnetic refrigeration10.1088/0953-8984/16/6/L02 ↗
5. Synthesis and characterization of bifunctional Ru doped La-based perovskites for magnetic refrigeration and energy storage systems10.1016/j.ijhydene.2022.09.180 ↗
6. Low Field Magnetocaloric Properties in Potassium-Doped (La, Sr) MnO3 Manganese Oxides10.1007/s10909-022-02903-9 ↗
7. Stanley · 1971
8. Structural, magnetic, magnetocaloric and critical properties of La0.9Ba0.1MnO3 manganite10.1016/j.jallcom.2018.08.054 ↗
9. Study on the critical behavior and magnetocaloric effect of RCrO3 (R= Gd, Dy)10.1016/j.ceramint.2022.12.038 ↗
10. Tricritical behavior of the two-dimensional intrinsically ferromagnetic semiconductor CrGeTe310.1103/PhysRevB.95.245212 ↗
11. Tuning the microstructure and magnetocaloric properties of Na+-substituted La0.67Ca0.33−xNaxMnO3 porous nanospheres10.1016/j.jallcom.2023.173016 ↗
12. Role of Mn2+ doped in La0.66-xCa0.33-yMn1+x+yO3 porous nanospheres: Structure, critical behavior, magnetocaloric effects and a first-order reversal curve analysis10.1016/j.ceramint.2023.04.058 ↗
13. Structure, magnetism, critical behavior and magnetocaloric effects of La0.66Ca0.33MnO3 porous nanospheres tuned by a solvothermal method with PVP addition10.1016/j.jallcom.2022.167625 ↗
14. Investigation of magnetic, magnetocaloric, and critical properties of La0.5Ba0.5MnO3 manganite10.1007/s10948-018-4603-1 ↗
15. Structure and charge transport mechanism in hydrothermally synthesized (La0.5Ba0.5MnO3) cubic perovskite manganite10.1007/s10854-017-7381-9 ↗
16. Structural, magnetic, magnetocaloric and critical behavior studies in the vicinity of the paramagnetic to ferromagnetic phase transition temperature in LaMnO3+δ compound10.1016/j.jmmm.2018.06.026 ↗
17. Density-functional studies of the electronic structure of the perovskite oxides: La1− xCaxMnO310.1063/1.361546 ↗
18. Tricritical Point and the Doping Dependence of the Order of the Ferromagnetic Phase Transition of La1− xCaxMnO310.1103/PhysRevLett.89.227202 ↗
19. B.H. Toby, R.B. Von Dreele, GSAS-II (GENERAL STRUCTURE AND ALAYSIS SYSTEM-II), Argonne National Lab.(ANL), Argonne, IL (United States), 2023.
20. GSAS-II: the genesis of a modern open-source all purpose crystallography software package10.1107/S0021889813003531 ↗
21. Effect of nitrogen incorporation in La2/3Ca1/3MnO3 manganite10.1088/0953-8984/14/2/306 ↗
22. The Scherrer formula for X-ray particle size determination10.1103/PhysRev.56.978 ↗
23. Structural, dielectric, and piezoelectric properties of lead-free (1− x) K 1/2 Na1/2NbO3−xCa(Zn1/3Ta2/3)O3 perovskite solid solution10.1007/s10854-019-01881-1 ↗
24. Correlation effects in energy-band theory10.1103/PhysRevB.10.2602 ↗
25. Crossover critical behavior and magnetic entropy change of La0.7Ba0.1Ca0.1Sr0.1MnO3: A comparison between wet-mixing and sol-gel synthesis methods10.1016/j.physb.2020.412227 ↗
26. Capillary condensation in heterogeneous mesoporous networks consisting of variable connectivity and pore-size correlation10.1039/b108785a ↗
27. Large interspaced layered potassium niobate nanosheet arrays as an ultrastable anode for potassium ion capacitor10.1016/j.ensm.2020.10.013 ↗
28. Effect of pore structure and doping species on charge storage mechanisms in porous carbon-based supercapacitors10.1039/D0QM00180E ↗
29. Polyvinylpyrrolidone (PVP) in nanoparticle synthesis10.1039/C5DT02964C ↗
30. Water-soluble monodispersed lanthanide oxide submicrospheres: PVP-assisted hydrothermal synthesis, size-control and luminescence properties10.1002/cphc.201100806 ↗
31. Electrospun Cu-doped In2O3 hollow nanofibers with enhanced H2S gas sensing performance10.1007/s40145-021-0546-2 ↗
32. L Bi doping effect on the critical behavior and magnetocaloric effect of Pr0.8-xBixSr0.2MnO3 ( x=0, 0.05 and 0.1)10.1016/j.jallcom.2017.12.209 ↗
33. Structural, magnetic, magnetocaloric and impedance spectroscopy analysis of Pr0.8Sr0.2MnO3 manganite prepared by modified solid-state route10.1016/j.physleta.2018.10.010 ↗
34. Stabilisation effects of superparamagnetic nanoparticles on clustering in nanocomposite microparticles and on magnetic behaviour10.1016/j.jmmm.2012.11.053 ↗
35. B.G. Ganga, P.N. Santhosh, P.J. Thomas, 2012, Magnetic properties of Ni and Cu-Ni nanoparticles, in: AIP Conf. Proc., American Institute of Physics, 2012: pp. 425–426..10.1063/1.4710061 ↗
36. B. Antic, V. Kusigerski, A. Kremenovic, M. Vucinic-Vasic, Z. Jaglicic, V. Spasojevic, Magnetic Properties and Change of Valence of Mn Ion in Nanosize Zn-Mn Ferrites, (n.d.).
37. Magnetic properties of ultrafine α-Fe2O3 antiferromagnetic particles10.1016/0304-8853(94)90492-8 ↗
38. The interplay between single particle anisotropy and interparticle interactions in ensembles of magnetic nanoparticles10.1039/C8CP03934H ↗
39. Beyond the blocking model to fit nanoparticle ZFC/FC magnetisation curves10.1038/s41598-018-29501-8 ↗
40. Structure and spin glass behavior in La0.77Mg0.23-x□xMnO3 (0≤ x≤ 0.2) manganites10.1016/j.jallcom.2017.12.189 ↗
41. Spin-dependent magnetism and superparamagnetic contribution to the magnetocaloric effect of non-stoichiometric manganite nanoparticles
42. Effect of (Al, Sn) doping on structural, magnetic and magnetocaloric properties of La0.7Ca0.1Pb0.2Mn1−x−yAlxSnyO3 (0≤ x, y≤ 0.075) manganites10.1016/j.jallcom.2016.12.324 ↗
43. Critical behavior near the paramagnetic to ferromagnetic phase transition temperature in polycrystalline La0.57Nd0.1Sr0.33Mn1−xAlxO3 (0.0≤x≤0.1)10.1007/s10948-012-1687-x ↗
44. Scaling study of magnetic phase transition and critical behavior in Nd0.55Sr0.45Mn0.98Ga0.02O3 manganite10.1016/j.materresbull.2017.11.037 ↗
45. Field dependence of the magnetocaloric effect in materials with a second order phase transition: a master curve for the magnetic entropy change10.1063/1.2399361 ↗
46. Static critical phenomena in ferromagnets with quenched disorder10.1016/0304-8853(85)90128-3 ↗
47. Logarithmic corrections to the molecular-field behavior of critical and tricritical systems10.1103/PhysRevB.7.248 ↗
48. Conjectures on the exact solution of three-dimensional (3D) simple orthorhombic Ising lattices10.1080/14786430701646325 ↗
49. Critical behavior of La0.7Ca0.3MnO3 nanoparticles10.2320/matertrans.MA201552 ↗
50. Magnetic properties and critical behavior of the perovskite manganite La0. 825Sr0. 175MnO310.1016/j.cplett.2022.140119 ↗
51. Equation of state in the neighborhood of the critical point10.1063/1.1696618 ↗
52. Review of the magnetocaloric effect in manganite materials10.1016/j.jmmm.2006.07.025 ↗
53. Critical phenomena of magnetization, magnetocaloric effect, and superparamagnetism in nanoparticles of non-stoichiometric manganite10.1016/j.jallcom.2020.155440 ↗
54. Relative cooling power enhancement in magneto-caloric nanostructured Pr2Fe1
55. Field dependence of the magnetocaloric effect in materials with a second order phase transition: a master curve for the magnetic entropy change10.1063/1.2399361 ↗