Al-doped ZnO Thin Films via Sputtering: Influence of Structural Defects on Ozone Gas Sensitivity

Autor: Douglas Henrique Sales, Ramon Resende Leite, Julio Cesar Camilo Albornoz Diaz, Amanda Akemy Komorizono, Maria Ines Basso Bernardi, Valmor Roberto Mastelaro, Elson Longo, Silvio Rainho Teixeira, Agda Eunice de Souza

Publikováno v: Materials Research, Vol 27, Iss suppl 2 (2024)

Nowadays, few studies have reported on the sensitivity of thin films of Al-doped ZnO to ozone. This gas can become harmful to health depending on its environmental concentration. This work presents the sensor response to ozone gas of pure ZnO and Al-

Externí odkaz: https://doaj.org/article/7dad251866364f2fb8ffbf647ae53dfe

Unveiling the high-temperature dielectric response of $$\text {Bi}_{0.5}\text {Na}_{0.5}\text {TiO}_{3}$$ Bi 0.5 Na 0.5 TiO 3

Autor: Julio Cesar Camilo Albornoz Diaz, Jean-Claude M’Peko, Michel Venet, Paulo Sergio da Silva

Publikováno v: Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)

Understanding the physics behind changes in dielectric permittivity and mechanical response with temperature and frequency in lead-free ferroic materials is a fundamental key to achieve optimal properties and to guarantee good performance in the tech

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doajarticles::a6ae95249ce4035f2b154903a77ed421
http://link.springer.com/article/10.1038/s41598-020-75859-z

Ferroic glass behavior in (Bi,Na)TiO3-based lead-free electroceramics

Autor: Julio Cesar Camilo Albornoz Diaz (a, Michel Venet (a), Ariano De Giovanni Rodrigues (a), David Antonio Barbosa Quiroga (a), Francesco Cordero (c), Paulo Sergio da Silva Jra (a)

Publikováno v: Journal of alloys and compounds 918 (2022): 165717-1–165717-8. doi:10.1016/j.jallcom.2022.165717
info:cnr-pdr/source/autori:Julio Cesar Camilo Albornoz Diaz (a,b), Michel Venet (a), Ariano De Giovanni Rodrigues (a), David Antonio Barbosa Quiroga (a), Francesco Cordero (c), Paulo Sergio da Silva Jra (a)/titolo:Ferroic glass behavior in (Bi,Na)TiO3-based lead-free electroceramics/doi:10.1016%2Fj.jallcom.2022.165717/rivista:Journal of alloys and compounds/anno:2022/pagina_da:165717-1/pagina_a:165717-8/intervallo_pagine:165717-1–165717-8/volume:918

Ferroic glass materials, that is, relaxors, spin glasses, and strain glasses attract special attention because of their intriguing physical properties and potential for novel technological applications. Here, several characterization techniques are u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e3b973f2c20d794d54ee6200d86ac37
https://doi.org/10.1016/j.jallcom.2022.165717

Evolution of crystalline phases and morphotropic phase boundary of the (Bi,Na)TiO3-(Bi,K)TiO3-BaTiO3 lead-free ceramic system

Autor: M. Venet, David Antonio Barbosa Quiroga, Ariano De Giovanni Rodrigues, Paulo Sergio Carvalho Pereira da Silva, Julio Cesar Camilo Albornoz Diaz, Odila Florêncio

Publikováno v: Journal of Alloys and Compounds. 691:498-503

In this work, high density Bi0.5Na0.5TiO3-Bi0.5K0.5TiO3-BaTiO3 (BNBK) lead-free ceramics with nominal compositions crossing the morphotropic phase boundary region were prepared and their crystalline phases were investigated by a combination of the X-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7f807fe5117eed32d7ee7e6107d64b30
https://doi.org/10.1016/j.jallcom.2016.08.270

Anelastic and optical properties of Bi0.5Na0.5TiO3 and (Bi0.5Na0.5)0.94Ba0.06TiO3 lead-free ceramic systems doped with donor Sm3+

Autor: M. Venet, Paulo Sergio Carvalho Pereira da Silva, Francesco Cordero, Julio Cesar Camilo Albornoz Diaz

Publikováno v: Journal of alloys and compounds 746 (2018): 648–652. doi:10.1016/j.jallcom.2018.02.303
info:cnr-pdr/source/autori:Julio Cesar Camilo Albornoz Diaz (1), Michel Venet (1), Francesco Cordero (2), Paulo Sergio da Silva Jr. (1)/titolo:Anelastic and optical properties of Bi0.5Na0.5TiO3 and (Bi0.5Na0.5)0.94Ba0.06TiO3 lead-free ceramic systems doped with donor Sm3+/doi:10.1016%2Fj.jallcom.2018.02.303/rivista:Journal of alloys and compounds/anno:2018/pagina_da:648/pagina_a:652/intervallo_pagine:648–652/volume:746

The effect of Sm3+ substitution in (Bi0.5Na0.5)(1−x)SmxTiO3 (BNT-100xSm) and [(Bi0.5Na0.5)0.94Ba0.06](1−x)SmxTiO3 (BNT6-100xSm) has been studied by conventional X-ray diffraction (XRD), mechanical spectroscopy and photoluminescence (PL) measures.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6af339f5059cccd8ab5998b8490fc7f