Effect of La3+ cation solubility on the structural, magnetic and electrical properties of barium hexaferrite
Source abstract
Abstract
Abstract In the present work, was studied the effect of the La3+ cation solubility on the structural, magnetic and electrical properties of M-type barium hexaferrite (BaM). The Rietveld refinement revealed changes in the lattice parameters with increasing the La3+ concentration. Variations in the bond length and the distortion index of 2b, 4f2 and 12k oxygen polyhedral were observed with the La3+ insertion in the BaM structure. In addition to the BaM phase, secondary phases Fe2O3 and LaFeO3 arise, whose concentrations depend on the La3+ solubility. The magnetic properties are strongly affected by the La3+ incorporation in the structure, as well as by the secondary phases. Changes in the oxidation state of Fe3+ to Fe2+ decreases the exchange interaction, resulting in the magnetic moments disturbance. The electrical properties are dependent on the La3+ content and the secondary phase concentration. Undoped sample present the highest impedance values, decreasing linearly in all frequency range. For doped samples, the resistivity decreases in several orders due to the La3+ incorporation, while the ac-conductivity remains constant at low frequencies and presents dispersion at high frequencies. The dielectric permittivity present space charge polarization mechanism generated by electron hopping from Fe3+ to Fe2+ ions. The Non-Debye-type relaxation and the conductivity transition of long and short range are suggested from the results of imaginary impedance and electric module. The bond valence model revealed that the most affected crystallographic sites are 2b, 4f2 and 12k, where the exchange of valence of Fe3+ by Fe2+ ions should take place.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Multiferroics and related materials · Electromagnetic wave absorption materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (75)
Show source-provided references
1. Effect of non-magnetic and magnetic trivalent ion substitutions on BaM-ferrite properties synthesized by hydrothermal method10.1016/j.jallcom.2016.02.071 ↗
2. Structure and multiferroic properties of barium hexaferrite ceramics10.1016/j.jmmm.2012.09.047 ↗
3. Structural and dielectric spectroscopy studies of the M-type barium strontium hexaferrite alloys (BaxSr1–xFe12O19)10.1007/s10854-007-9411-5 ↗
4. Magnetic, dielectric and microwave properties of M–Ti substituted barium hexaferrites (M = Mn2+, Co2+, Cu2+, Ni2+, Zn2+) Ceramics
5. Hexagonal ferrites: a review of the synthesis, properties and applications of hexaferrite ceramics10.1016/j.pmatsci.2012.04.001 ↗
6. Rietveld refinement, electrical properties and magnetic characteristics of Ca–Sr substituted barium hexaferrites10.1016/j.jallcom.2011.10.071 ↗
7. Saxena · 2014
8. Refinement of the atomic and magnetic structures of solid solutions BaFe12- xInxO19 (x = 0.1–1.2) by the neutron diffraction method10.1134/S1027451019010361 ↗
9. Coexistence of spontaneous polarization and magnetization in substituted M-type hexaferrites BaFe12–xAlxO19 (x ≤ 1.2) at room temperature10.1134/S0021364016020132 ↗
10. Multiferroic M-type hexaferrites with a room-temperature conical state and magnetically controllable spin helicity10.1103/PhysRevLett.105.257201 ↗
11. Multiferroic PbFe12O19 ceramics10.1007/s10832-011-9641-z ↗
12. Magnetoelectric hexaferrites10.1146/annurev-conmatphys-020911-125101 ↗
13. Magnetic properties and mössbauer study of gallium doped M-type barium hexaferrites10.1016/j.ceramint.2017.06.172 ↗
14. Strong corelation between magnetic and electrical subsystems in diamagnetically substituted hexaferrites ceramics10.1016/j.ceramint.2017.01.096 ↗
15. Polarization origin and iron positions in indium doped barium hexaferrites10.1016/j.ceramint.2017.09.172 ↗
16. Low-temperature dipolar polarization mechanisms in Ba0·9La0·1Fe12O19 ceramic hexaferrite10.1016/j.ceramint.2020.06.170 ↗
17. Dual ferroic properties of hexagonal ferrite ceramics BaFe12O19 and SrFe12O19
18. Crystal and magnetic structures, magnetic and ferroelectric properties of strontium ferrite partially substituted with in ions10.1016/j.jallcom.2019.153412 ↗
19. Structure and magnetic properties of La3+‐substituted strontium hexaferrite particles prepared by sol–gel method10.1002/1521-396X(200209)193:2<314::AID-PSSA314>3.0.CO;2-W ↗
20. Lattice strain mediated dielectric and magnetic properties in La doped barium hexaferrite10.1016/j.jmmm.2018.10.085 ↗
21. Effect of La doping on structural, magnetic and microstructural properties of Ba1−xLaxFe12O19 ceramics prepared by citrate combustion process10.1007/s10832-006-9879-z ↗
22. BaFe12-xLaxFe12O19 (x = 0.0, 0.2, 0.4, 0.6) hollow microspheres: material parameters, magnetic and microwave absorbing properties10.1007/s10854-016-5243-5 ↗
23. Structure and magnetic properties of Ba1-xLaxFe12O19 prepared by Ba1-xLaxFe2O4
24. Influences of La3+ substitution on the structure and magnetic properties of M-type strontium ferrites10.1016/S0304-8853(01)00914-3 ↗
25. Electric transport properties study of bulk BaFe12O19 by complex impedance spectroscopy10.1016/j.physb.2015.06.006 ↗
26. Temperature dependent magnetic and dielectric properties of M-type hexagonal BaFe12O19 nanoparticles10.1016/j.jallcom.2012.07.133 ↗
27. Impedance spectroscopy analysis of BaFe12O19 M-type hexaferrite obtained by ceramic method10.1016/j.ceramint.2009.02.020 ↗
28. Small polaron and bipolaron transport in antimony oxide doped barium hexaferrites10.1063/1.1309045 ↗
29. Structural and millimeter-wave characterization of flux grown Al substituted barium hexaferrite single crystals10.1016/j.ceramint.2015.06.105 ↗
30. Sol–gel synthesis of Ce-substituted BaFe12O1910.1007/s10853-006-0758-4 ↗
31. Influence of Sm3+ substitution on microwave magnetic performance of barium hexaferrites10.1016/S1002-0721(07)60473-6 ↗
32. Microwave absorption properties of La-substituted M-type strontium ferrites10.1016/j.jallcom.2009.10.116 ↗
33. Electrical and dielectric properties of Nb3+ ions substituted Ba-hexaferrites10.1016/j.rinp.2019.102468 ↗
34. Recent advances in magnetic structure determination by neutron powder diffraction10.1016/0921-4526(93)90108-I ↗
35. VESTA 3 for three-dimensional visualization of crystal, vol-umetric and morphology data10.1107/S0021889811038970 ↗
36. Surficial structure retention mechanism for LiNi0.8Co0.15Al0.05O2 in a full gradient cathode10.1021/acsami.9b10160 ↗
37. Crystal structure and magnetic properties of the BaFe12-xAlxO19, (x = 0.1–1.2) solid solutions10.1016/j.jmmm.2015.05.076 ↗
38. Revised effective ionic radii and systematic studies of interatomie distances in halides and chaleogenides10.1107/S0567739476001551 ↗
39. Synthesis and characterization of yttrium iron garnet nanoparticles doped with cobalt10.1016/j.ceramint.2018.03.179 ↗
40. Structural and magnetic properties of Ni-doped yttrium iron garnet nanopowders10.1016/j.jmmm.2019.165650 ↗
41. Improvement in magnetic properties of La substituted BaFe12O19 particles prepared with an unusually low Fe/Ba molar ratio10.1016/j.jmmm.2011.02.012 ↗
42. Neutron diffraction studies of some hexagonal ferrites: BaFe12O19, BaMg2W and BaCo2W10.1016/0304-8853(86)90734-1 ↗
43. Effect of substitution of Zn-Ti on magnetic and dielectric properties of BaFe12O19. Raman spectra and vibrational analysis of BaFe12O19 hexagonal ferrite10.1006/jssc.1997.7737 ↗
44. Enhancement of hard magnetic properties of BaFe12O19 nanoparticles10.1007/s10854-013-1632-1 ↗
45. Raman scattering studies of spin-waves in hexagonal BaFe12O1910.1002/jrs.4100 ↗
46. Raman studies of spin-phonon coupling in hexagonal BaFe12O19
47. Influence of Al substitution on structural, dielectric and magnetic properties of M-type barium hexaferrite10.1007/s10948-016-3924-1 ↗
48. In situ Raman spectroscopic investigation of aqueous iron corrosion at elevated temperatures and pressures10.1149/1.1393565 ↗
49. In situ atomic-scale engineering of the chemistry and structure of the grain boundaries region of Li3xLa2/3-xTiO310.1016/j.scriptamat.2020.04.018 ↗
50. Synergistic effect of cation ordered structure and grain boundary engineering on long-term cycling of Li0.35La0.55TiO3-based solid batteries10.1016/j.jeurceramsoc.2019.04.045 ↗
51. Cullity · 2009 · 326
52. Unusual thermal dependence of saturation magnetization in zinc oxide nanoparticles doped with transition metals obtained by sol gel method10.1016/j.ceramint.2018.09.267 ↗
53. Study of magnetization reversal in hybrid magnets10.1016/j.jallcom.2003.09.092 ↗
54. Magnetic properties of mechanically alloyed MnO + FeCo10.1016/j.jallcom.2004.01.016 ↗
55. The extended Bloch's law in yttrium iron garnet doped with Zn, Ni and Co10.1016/j.physe.2018.06.027 ↗
56. Structural and magnetic properties of yttrium iron garnet nanoparticles doped with copper obtained by sol gel method10.1016/j.matlet.2018.11.004 ↗
57. Structural and magnetic behaviour of aluminium doped barium hexaferrite nanoparticles synthesized by solution combustion technique10.1016/j.physb.2010.11.094 ↗
58. Investigation on magnetic and electric properties of morphologically different perovskite LaFeO3 nanostructures10.1007/s10854-015-3540-z ↗
59. Origin of colossal dielectric response in LaFeO310.1016/j.actamat.2010.10.066 ↗
60. A mechanism of magnetic hysteresis in heterogeneous alloys10.1109/TMAG.1991.1183750 ↗
61. Kremer · 2003
62. Barsoukov · 2018
63. Electrical conduction mechanism and dielectric properties of spherical shaped Fe3O4 nanoparticles synthesized by Co-precipitation method10.3390/ma11050735 ↗
64. Monoferrite BaFe2O4 applied as ceramic pigment10.1016/j.ceramint.2005.10.018 ↗
65. Electromagnetic properties and microwave absorbing characteristics of doped barium hexaferrite10.1016/j.jmmm.2005.10.006 ↗
66. On the dispersion of resistivity and dielectric constant of some semiconductors at audiofrequencies10.1103/PhysRev.83.121 ↗
67. Maxwell–wagner polarization in grain boundary segregated NiCuZn ferrite10.1016/j.cap.2014.10.005 ↗
68. The role of ionic diffusion in polarization in vitreous ionic conductors
69. Complex impedance and electric modulus studies of magnetic ceramic Ni0.27Cu0.10Zn0.63Fe2O410.1007/s40145-015-0152-2 ↗
70. Power factor of La1−xSrxFeO3 and LaFe1−yNiyO310.1016/j.jallcom.2006.05.012 ↗
71. Jonscher · 1996
72. Dielectric and magnetic properties of two-phase composite system: Mn-Zn or Ni-Zn ferrites in dielectric matrices10.1016/j.phpro.2015.12.152 ↗
73. Bond-valence parameters obtained from a systematic analysis of the inorganic crystal structure database10.1107/S0108768185002063 ↗
74. Recent developments in the methods and applications of the bond valence model10.1021/cr900053k ↗
75. Electron hopping mechanism in hematite (α-Fe2O3)10.1016/j.jpcs.2004.11.002 ↗