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Journal Articles Chemical Communications Year : 2021

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

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1
Shotaro Tada
  • Function : Author
Maira Debarba Mallmann
  • Function : Author
Haruna Takagi
  • Function : Author
Junya Iihama
  • Function : Author
Norifumi Asakuma
  • Function : Author
Toru Asaka
  • Function : Author
Yusuke Daiko
  • Function : Author
Sawao Honda
Rafael Kenji Nishihora
Yuji Iwamoto

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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Dates and versions

hal-03157706 , version 1 (03-03-2021)

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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, 2021, 57 (16), pp.2057-2060. ⟨10.1039/d0cc07366k⟩. ⟨hal-03157706⟩
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