Nanocrystallization of Bi$_2$O$_3$ based system from the glassy state under high compression

Szpakiewicz-Szatan, Aleksander (author), Pietrzak, Tomasz K. (author), Sierakowski, Kacper (author), Boćkowski, Michał (author), Rzoska, Sylwester J. (author), Garbarczyk, Jerzy E. (author), Starzonek, Szymon (author)

This report presents the pressure-temperature (p-T) plane of Bi$_2$O$_3$-Al$_2$O$_3$-SiO$_2$ ternary system in the context of nanocrystallite formation from its amorphous state. The diagram was constructed through differential thermal analysis (DTA) performed in situ under high-pressure-high-temperature (HP-HT) conditions, with nitrogen serving as the pressurizing medium. Above the glass transition temperature T$_g$, a wide ultraviscous, supercooled liquid state spanning approximately 150 K is observed. Later heating transforms this state into nanocrystallites embedded within an amorphous matrix, thereby keeping distinctive structural characteristics even after the decompression process. The p-T plane serves as a fundamental prerequisite for the design of nanocrystallites within a glass matrix, a well-established technique known as glass-ceramics. Various paths within the p-T plane, followed by annealing just below T$_g$, can be explored, potentially leading to the development of Bi$_2$O$_3$-based materials with enhanced electrical, dielectric, photonic, and mechanical properties, predicated on nanocrystallites formed by high-pressure treatment.

• Language: English
• Keywords: nanocrystalization, Bi$_2$O$_3$, ionic conductor, bismuth oxide, high-pressure, nanocrystallites, p-T plane
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FE - Faculty of Electrical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 6 str.
• Numbering: Vol. 33, art. 101975
• PID: 20.500.12556/RUL-153060
• UDC: 577
• ISSN on article: 2589-1529
• DOI: 10.1016/j.mtla.2023.101975
• COBISS.SI-ID: 176459779
• Publication date in RUL: 15.12.2023

Record is a part of a journal

• Title: Materialia
• Publisher: Elsevier, Acta Materialia Inc.
• ISSN: 2589-1529
• COBISS.SI-ID: 43267075

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: nanokristalizacija, Bi$_2$O$_3$, ionski prevodnik