%0 Journal Article %T Discovery of Ternary Silicon Titanium Nitride with Spinel-Type Structure %+ IRCER - Axe 4 : céramiques sous contraintes environnementales (IRCER-AXE4) %+ International Food Policy Research Institute [Washington] (IFPRI) %+ Bayerisches Geoinstitut (BGI) %+ Institute for Study of the Earth's Interior, Okayama University %+ The University of Tokyo, School of Engineering %+ Technische Universität Darmstadt - Technical University of Darmstadt (TU Darmstadt) %A Bhat, Shrikant %A Lale, Abhijeet %A Bernard, Samuel %A Zhang, Wei %A Ishikawa, Ryo %A Haseen, Shariq %A Kroll, Peter %A Wiehl, Leonore %A Farla, Robert %A Katsura, Tomoo %A Ikuhara, Yuichi %A Riedel, Ralf %< avec comité de lecture %@ 2045-2322 %J Scientific Reports %I Nature Publishing Group %V 10 %N 1 %8 2020-12 %D 2020 %R 10.1038/s41598-020-64101-5 %Z Chemical Sciences %Z Chemical Sciences/Material chemistryJournal articles %X Here we report on the discovery of a ternary silicon titanium nitride with the general composition (Si 1−x ,ti x) 3 n 4 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, spineltype γ-Si 3 n 4 and rock salt-type c-TiN are formed. In addition, crystals of the discovered nano-sized ternary phase (Si 1−x ,ti x) 3 n 4 embedded in γ-Si 3 n 4 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 Ti 3+ and ti 4+ oxidation states and are located on the Si sites. the ternary nano-crystals have to be described as (Si,ti) 3 n 4 with n-vacancies resulting in the general composition (Si 4+ 1−x ti 4+ x-δ ti 3+ δ) 3 n 4-δ . %G English %2 https://cnrs.hal.science/hal-02613606/document %2 https://cnrs.hal.science/hal-02613606/file/s41598-020-64101-5.pdf %L hal-02613606 %U https://cnrs.hal.science/hal-02613606 %~ UNILIM %~ CNRS %~ SPCTS %~ IPAM %~ SPCTS-AXE4 %~ INC-CNRS %~ IRCER %~ IRCER-AXE4 %~ IMPEO %~ TEST2-HALCNRS