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Toward a new PTCR material based on the Na2Ti6O13/Na2Ti3O7 system

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10.1016/j.materresbull.2021.111311
 
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hdl:2117/342593

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Basilio, L.A.L.
Silva, J.H.L.
Xavier, F.
Aguilera, Lianet
Guerrero, Fidel
Antonelli, Eduardo
Anglada-Rivera, José
García García, José EduardoMés informacióMés informacióMés informació
Silva, R.S.
Leyet, Yurimiler
Document typeArticle
Defense date2021-08
Rights accessRestricted access - publisher's policy (embargoed until 2023-03-16)
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Mixed phases of sodium titanate ceramics are obtained using both conventional and laser sintering methods. It was observed a clear dependence on the structural, microstructural and electrical resistivity with the employed sintering method. The temperature dependence of the resistivity in the ceramics shows an increase of three orders of magnitude in a narrow range of temperatures, thereby indicating a noticeable positive temperature coefficient of resistivity (PTCR) effect. To explain this observed abnormal behavior, a model based on the structure of the Na2Ti6O13/Na2Ti3O7 composite is proposed. A new class of PTCR materials is reported.
CitationBasilio, L.A.L. [et al.]. Toward a new PTCR material based on the Na2Ti6O13/Na2Ti3O7 system. "Materials research bulletin", Agost 2021, vol. 140, p. 111311:1-111311:5. 
URIhttp://hdl.handle.net/2117/342593
DOI10.1016/j.materresbull.2021.111311
ISSN0025-5408
Publisher versionhttps://www.sciencedirect.com/science/article/abs/pii/S0025540821001082?via%3Dihub
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  • CEMAD - Caracterització elèctrica de materials i dispositius - Articles de revista [77]
  • Departament de Física - Articles de revista [1.714]
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