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Low temperature in situ formation of cobalt in silicon nitride toward functional nitride nanocomposites †

Abstract : This work highlights the first demonstration of a low-temperature in situ formation of Co nanocrystallites embedded within an amorphous silicon nitride matrix through careful control of the chemistry behind material design using perhydropolysilazane (PHPS) as a Si3N4 precursor further coordinated with CoCl2 and ammonia as a pyrolysis atmosphere. The Co nucleation was allowed to proceed at temperatures as low as 400 8C via thermal decomposition of Co2N pre-formed in situ by the reaction of CoCl2 with the Si centers of PHPS at the early stage of pyrolysis (220-350 8C).
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https://hal-cnrs.archives-ouvertes.fr/hal-03157706
Contributor : Samuel Bernard <>
Submitted on : Wednesday, March 3, 2021 - 1:28:40 PM
Last modification on : Wednesday, March 10, 2021 - 3:13:18 AM

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Shotaro Tada, Maira Debarba Mallmann, Haruna Takagi, Junya Iihama, Norifumi Asakuma, et al.. Low temperature in situ formation of cobalt in silicon nitride toward functional nitride nanocomposites †. Chemical Communications, Royal Society of Chemistry, 2021, 57 (16), pp.2057-2060. ⟨10.1039/d0cc07366k⟩. ⟨hal-03157706⟩

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