TU Darmstadt / ULB / TUbiblio

Discovery of Ternary Silicon Titanium Nitride with Spinel-Type Structure

Bhat, Shrikant and Lale, Abhijeet and Bernard, Samuel and Zhang, Wei and Ishikawa, Ryo and Haseen, Shariq and Kroll, Peter and Wiehl, Leonore and Farla, Robert and Katsura, Tomoo and Ikuhara, Yuichi and Riedel, Ralf (2020):
Discovery of Ternary Silicon Titanium Nitride with Spinel-Type Structure.
In: Scientific Reports, 10 (1), p. 7372. Springer Nature, ISSN 2045-2322,
DOI: 10.1038/s41598-020-64101-5,
[Article]

Abstract

Here we report on the discovery of a ternary silicon titanium nitride with the general composition (Si1−x,Tix)3N4 with x = 0 < x < 1 and spinel-type crystal structure. The novel nitride is formed from an amorphous silicon titanium nitride (SiTiN) precursor under high-pressure/high-temperature conditions in a large volume high-pressure device. Under the conditions of 15–20 GPa and 1800–2000 °C, spinel-type γ-Si3N4 and rock salt-type c-TiN are formed. In addition, crystals of the discovered nano-sized ternary phase (Si1−x,Tix)3N4 embedded in γ-Si3N4 are identified. The ternary compound is formed due to kinetically-controlled synthesis conditions and is analyzed to exhibit the spinel-type structure with ca. 8 atom% of Ti. The Ti atoms occur in both Ti3+ and Ti4+ oxidation states and are located on the Si sites. The ternary nano-crystals have to be described as (Si,Ti)3N4 with N-vacancies resulting in the general composition (Si4+1−x Ti4+x-δTi3+δ)3N4-δ.

Item Type: Article
Erschienen: 2020
Creators: Bhat, Shrikant and Lale, Abhijeet and Bernard, Samuel and Zhang, Wei and Ishikawa, Ryo and Haseen, Shariq and Kroll, Peter and Wiehl, Leonore and Farla, Robert and Katsura, Tomoo and Ikuhara, Yuichi and Riedel, Ralf
Title: Discovery of Ternary Silicon Titanium Nitride with Spinel-Type Structure
Language: English
Abstract:

Here we report on the discovery of a ternary silicon titanium nitride with the general composition (Si1−x,Tix)3N4 with x = 0 < x < 1 and spinel-type crystal structure. The novel nitride is formed from an amorphous silicon titanium nitride (SiTiN) precursor under high-pressure/high-temperature conditions in a large volume high-pressure device. Under the conditions of 15–20 GPa and 1800–2000 °C, spinel-type γ-Si3N4 and rock salt-type c-TiN are formed. In addition, crystals of the discovered nano-sized ternary phase (Si1−x,Tix)3N4 embedded in γ-Si3N4 are identified. The ternary compound is formed due to kinetically-controlled synthesis conditions and is analyzed to exhibit the spinel-type structure with ca. 8 atom% of Ti. The Ti atoms occur in both Ti3+ and Ti4+ oxidation states and are located on the Si sites. The ternary nano-crystals have to be described as (Si,Ti)3N4 with N-vacancies resulting in the general composition (Si4+1−x Ti4+x-δTi3+δ)3N4-δ.

Journal or Publication Title: Scientific Reports
Journal volume: 10
Number: 1
Publisher: Springer Nature
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 24 Jul 2020 06:30
DOI: 10.1038/s41598-020-64101-5
Official URL: https://www.nature.com/articles/s41598-020-64101-5#citeas
Projects: Ralf Riedel is grateful for a JSPS fellowship from August to October 2019 (Fellowship ID: S19003)., Ryo Ishikawa and Yuichi Ikuhara acknowledge the support from JSPS KAKENHI (Grant No. 17H01316, 17K18974, 19H05788, JP17H06094) and “Nanotechnology Platform” (Project No. 12024046) by MEXT, Japan., Financial support was also provided by the Federal Ministry of Education and Research, Germany (BMBF, grant nos.: 05K16WC2 & 05K13WC2)., Samuel Bernard acknowledges the support from the French funding agency Agence Nationale de la Recherche (ANR) (Project number ANR-16-CE08-0026).
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)
Show editorial Details Show editorial Details