Influence of sonication time on the structure and electrical properties of Na2Ti6O13 ceramics: An approach applying the Mott-Schottky model

Aguilera, L.; Fagundes, N.G.; Melo, A. da S.; Bandeira, B.; Nobre, Francisco Xavier; Anglada-Rivera, J.; Silva, J.P.; Cruz, J. Pérez de la; Leyet, Y.

doi:10.1016/j.ceramint.2019.12.106

Cited by 13 publications

(15 citation statements)

References 16 publications

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“…This is because, as mentioned above, these phases are isomorphic. Similar results were previously reported 3,4,13 .…”

Section: Characterization By Raman Spectroscopysupporting

confidence: 93%

“…This behavior results in the prevalence of the behavior of the grain boundary region in the electrical response of this material. The values of electrical resistance obtained in this work for both the grain region and the grain boundary region are slightly higher than those previously reported for materials with pure phase of one or another phase when obtained by sonochemical synthesis 3,4 . Among the possible causes that originated this behavior, the non-optimization in the synthesis and sintering parameters of this biphasic material can be considered.…”

Section: Electrical Characterization Of the Biphasic Ceramic Samplecontrasting

confidence: 77%

“…In this case, the diameter of the semicircles corresponds to the total resistance (Rt) of the sample. This Rt can be determined by adjustment with an equivalent circuit, and obtains the resistance corresponding to the grain and its boundary 3 .…”

Section: Electrical Characterization Of the Biphasic Ceramic Samplementioning

confidence: 99%

“…These characteristics make the trititanate interesting from the point of view of its electrical properties, since it has a higher density of charge carriers 1 . In the case of hexatitanate, the tunnel shape of its crystalline structure facilitates the presence of a large number of conduction paths 3 . Recently, several studies have been published revealing the electrical characteristics of ceramics in both the crystalline phases 1,[3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

“…In the case of hexatitanate, the tunnel shape of its crystalline structure facilitates the presence of a large number of conduction paths 3 . Recently, several studies have been published revealing the electrical characteristics of ceramics in both the crystalline phases 1,[3][4][5] . However, there is very little information in the literature from the point of view of their electrical properties and what occurs in sodium titanate ceramics that have phase mixtures.…”

Section: Introductionmentioning

confidence: 99%

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Sonochemical Synthesis and Characterization of the Biphasic Compound Na2Ti3O7/ Na2Ti6O13

et al. 2021

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This study processed and characterized the biphasic ceramics Na 2 Ti 3 O 7 /Na 2 Ti 6 O 13 that were obtained from semi-crystalline nanoparticles synthesized using sonochemical methods. Structural characterization techniques, such as X-ray diffraction and Raman spectroscopy, were used to identify the crystalline phases present. The Rietveld refinement revealed, among other structural parameters, the presence of two crystalline phases in compositions of 55.90% and 44.10% for sodium hexatitanate and trititanate, respectively. Via Raman spectroscopy, the presence of the main vibrational modes that correspond to the phases present in biphasic ceramics was confirmed. Finally, by using complex impedance spectroscopy, a decrease in the electrical resistance of both the grain (10 6 Ω-10 4 Ω) and its boundary (10 8 Ω -10 5 Ω) under increasing temperature was identified.

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“…This is because, as mentioned above, these phases are isomorphic. Similar results were previously reported 3,4,13 .…”

Section: Characterization By Raman Spectroscopysupporting

confidence: 93%

Section: Electrical Characterization Of the Biphasic Ceramic Samplecontrasting

confidence: 77%

Section: Electrical Characterization Of the Biphasic Ceramic Samplementioning

confidence: 99%