Hafnium(IV) nitrate is an inorganic compound, a salt of hafnium and nitric acid with the chemical formula Hf(NO3)4.[2][3][4]

Synthesis

Hafnium nitrate can be prepared by the reaction of hafnium tetrachloride and dinitrogen pentoxide.[5]

Properties

Hafnium nitrate is slightly volatile, and can be sublimed at 110 °C and 0.1 mmHg.[6] Hafnium nitrate decomposes on heating (≥ 160°C) to HfO(NO3)2 and then to HfO2.[6]

Applications

Hafnium nitrate can be used for the preparation of materials containing hafnium dioxide.[6]

References

  1. ^ "Hafnium Nitrate (CAS: 15509-05-4) | Stanford Advanced Materials". samaterials.com. Retrieved 29 October 2021.
  2. ^ "Hafnium(IV) nitrate". Sigma Aldrich. Retrieved 29 October 2021.
  3. ^ "Hafnium Nitrate". American Elements. Retrieved 29 October 2021.
  4. ^ The Metallurgy of Hafnium. Naval Reactors, Division of Reactor Development, U.S. Atomic Energy Commission. 1960. p. 31. Retrieved 29 October 2021.
  5. ^ Zhuang, Weiwei; Conley, John F.; Ono, Yoshi; Evans, David R.; Solanki, R. (January 2002). "Hafnium Nitrate Precursor Synthesis and HfO2 Thin Film Deposition". Integrated Ferroelectrics. 48 (1): 3–12. Bibcode:2002InFer..48....3Z. doi:10.1080/10584580215449. S2CID 50290009.
  6. ^ a b c Conley, J. F.; Ono, Y.; Zhuang, W.; Tweet, D. J.; Gao, W.; Mohammed, S. K.; Solanki, R. (2002). "Atomic Layer Deposition of Hafnium Oxide Using Anhydrous Hafnium Nitrate". Electrochemical and Solid-State Letters. 5 (5): C57. doi:10.1149/1.1462875. ISSN 1099-0062. Retrieved 29 October 2021.