Evaluation of mobility range of charge carriers in Nd-substituted
Source abstract
Abstract
Abstract Here we report tuning of structural parameters of La2Sn2O7 by Nd substitution at La-site in a quest to effectively control the dielectric response as a small variation in lattice parameters can result in large dielectric fluctuations. For this purpose, a series of Nd-substituted La2Sn2O7 was synthesized using sol gel auto-combustion route. The formation of stable cubic pyrochlore phase with consistent variation in the lattice parameters was observed in structural analysis. The morphological investigations revealed a spherical shape of La2Sn2O7 particles which transformed to diamond like shape with a systematic variation in grain size by increasing the Nd contents. The variation in grain size dominantly affected the dielectric dispersion in the vast frequency range. Less energy loss and improved dielectric properties make La1.2Nd0.8Sn2O7 a potential candidate for utilization in energy storage devices. The complex modulus analysis provided an insightful view which helped to distinguish the mobility range of charge carriers in different frequency ranges.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nuclear materials and radiation effects · Microwave Dielectric Ceramics Synthesis · Ferroelectric and Piezoelectric Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. Porous Nb4N5/rGO nanocomposite for ultrahigh-energy-density lithium-ion hybrid capacitor10.1021/acsami.9b06351 ↗
2. Nanocellulose for energy storage systems: beyond the limits of synthetic materials10.1002/adma.201804826 ↗
3. Facile synthesis of self-assembled WO3 nanorods for high-performance electrochemical capacitor10.1016/j.jallcom.2018.08.194 ↗
4. Ultrahigh β-phase content poly (vinylidene fluoride) with relaxor-like ferroelectricity for high energy density capacitors10.1038/s41467-019-12391-3 ↗
5. Dielectric, impedance and piezoelectric properties of (K0.5Nd0.5)TiO3-doped 0.67BiFeO3-0.33BaTiO3 ceramics10.1016/j.jeurceramsoc.2019.06.001 ↗
6. Nonlinear current-voltage and giant dielectric properties of Al3+ and Ta5+ co-doped TiO2 ceramics10.1016/j.materresbull.2019.04.026 ↗
7. Nonlinear electrical properties and dielectric properties of ZnO ceramics doped with K2CO310.1007/s10854-019-01760-9 ↗
8. Enhanced energy storage properties in sodium bismuth titanate-based ceramics for dielectric capacitor applications10.1039/C9TC01239G ↗
9. Correlation of La-mediated structural transition and dielectric relaxation in Bi2Mg2/3Nb4/3O7 pyrochlores10.1016/j.ceramint.2019.04.175 ↗
10. Structural modulation enables magneto-dielectric effect and enhanced photoactivity in ferroelectric bismuth iron niobate pyrochlore10.1039/C8TC05672B ↗
11. Microwave hydrothermal synthesis of A2Sn2O7 (A= Eu or Y)10.1016/j.ceramint.2014.10.030 ↗
12. Hydrothermal crystal growth of rare earth tin cubic pyrochlores, RE2Sn2O7 (RE= La-Lu): site ordered, low defect single crystals10.1021/acs.cgd.8b01889 ↗
13. Universal geometric frustration in pyrochlores10.1038/s41467-018-05033-7 ↗
14. A critical review of existing criteria for the prediction of pyrochlore formation and stability10.1021/acs.inorgchem.8b01665 ↗
15. First-principles study of structural, elastic, and bonding properties of pyrochlores10.1103/PhysRevB.72.085107 ↗
16. Lanthanide stannate pyrochlores (Ln2Sn2O7; Ln = Nd, Gd, Er) at high pressure10.1088/1361-648X/aa9960 ↗
17. Tolerance factor for pyrochlores and related structures10.1107/S2052519213020514 ↗
18. Vibrational and elastic properties of Ln2Sn2O7 (Ln= La, Sm, Gd, Dy, Ho, Er, Yb, or Lu)10.1016/j.jpcs.2017.11.030 ↗
19. A general aqueous sol–gel route to Ln2Sn2O7 nanocrystals
20. Lanthanide stannate pyrochlores Ln2Sn2O7 (Ln= Nd, Sm, Eu, Gd, Er, Yb) nanocrystals: synthesis, characterization, and photocatalytic properties10.1016/j.materresbull.2014.01.048 ↗
21. Investigation of La3+ doped Yb2Sn2O7 as new thermal barrier materials10.1016/j.matdes.2015.07.022 ↗
22. Slow spin tunneling in the paramagnetic phase of the pyrochlore Nd2Sn2O710.1103/PhysRevB.95.134420 ↗
23. Abnormal pressure induced photoluminescence enhancement and phase decomposition in pyrochlore La2Sn2O710.1002/adma.201701513 ↗
24. Efficient energy storage and fast switching capabilities in Nd-substituted La2Sn2O7 pyrochlores10.1016/j.cej.2020.125198 ↗
25. Tunable structural and electrical impedance properties of pyrochlores based Nd doped lanthanum zirconate nanoparticles for capacitive applications10.1016/j.ceramint.2017.10.172 ↗
26. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides10.1107/S0567739476001551 ↗
27. Structurally tuned multifunctional characteristics of Nd-substituted lanthanum zirconates10.1007/s10854-018-8681-4 ↗
28. Structural tuning of dielectric properties of Ce-substituted Nd2Zr2O710.1016/j.jscs.2018.05.007 ↗
29. Relaxor features in ferroelectric superlattices: a Maxwell–Wagner approach10.1063/1.1324729 ↗
30. Temperature–stable dielectrics based on Cu–doped Bi2Mg2/3Nb4/3O7 pyrochlore ceramics for LTCC10.1016/j.ceramint.2017.09.177 ↗
31. Microstructure, frequency and temperature-dependent dielectric properties of cobalt-substituted lithium ferrites10.1016/S0304-8853(00)00033-0 ↗
32. Electrical conductivity anomaly around fluorite–pyrochlore phase boundary10.1016/S0167-2738(02)00874-3 ↗
33. Impedance analysis of 0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 ceramics consolidated from micro-granules10.1016/j.ceramint.2014.03.038 ↗
34. Dielectric relaxation behavior of AxCo1−xFe2O4 (A= Zn, Mg) mixed ferrites10.1016/j.jallcom.2012.02.089 ↗
35. Dielectric relaxation and ac conductivity of double perovskite oxide Ho2ZnZrO610.1016/j.physb.2011.04.012 ↗
36. Dielectric, impedance and modulus spectroscopy of BaBi2Nb2O910.1007/s10832-018-0135-0 ↗