Formation of local thorium silicate compound by electrochemical deposition from an acetone solution of thorium nitrate
- 111 Downloads
The results of the study of local formation (diameter of deposited area is about 100 μm) of thorium oxide coatings on SiO2/Si(001) surface by electrochemical deposition are presented. It was found that the electrochemical deposition of thorium atoms from an acetone solution of Th(NO3)4 on silicon surface lead to the formation of thorium-based films. The results of surface analysis by local X-ray photoelectron spectroscopy and X-ray photoemission indicate that these films contain of thorium-, silicon-, oxygen- and carbon-based compounds. After 30 h of annealing at 1350 °C in atmosphere carbon pulled completely, and the compound transforms into thorium silicate films ThSiO4 (Huttonite). Our primary study of ThSiO4 compound by reflection electron energy loss spectroscopy showed that this system have energy gap ~7.7 eV and can be useful for further research of «nuclear clocks» as well as for «nuclear battery».
KeywordsLocal electrochemical deposition Thorium Silicate Band structure XPS REELS GIXRD
The authors are grateful to V.G. Efimov and M.M. Grehov for help in experimental processing. The work was supported by the Russian Science Foundation (Project No. 16-19-00168).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no competing interests.
- 3.Beck BR, Wu CY, Beiersdorfer P, Brown GV, Becker JA, Moody KJ, Wilhelmy JB, Porter FS, Kilbourne CA, Kelley RL (2009) Improved Value for the Energy Splitting of the Ground-State Doublet in the Nucleus 229mTh. Report LLNL-PROC-415170Google Scholar
- 5.Peik Ek, Okhapkin M (2015) Comptes Rendus Physique 16:5Google Scholar
- 11.Borisyuk PV, Krasavin AV, Tkalya EV, Lebedinskii Yu Yu, Vasiliev OS, Yakovlev VP, Kozlova TI, Fetisov VV (2016) Chem Phys 478:2–7. doi: 10.1016/j.chemphys.2016.07.010
- 14.Briggs D, Grant JT (2003) Surface analysis by auger and X-ray photoelectron spectroscopy. IM Publications, ChichesterGoogle Scholar
- 16.Moulder JF, Stickle WF, Sobol PE, Bomben K (1992) Handbook of X-ray photoelectron spectroscopy. In: Chastain J (ed) Physical electronics, 2nd edn. Perkin-Elmer, Eden Prairie, MinnesotaGoogle Scholar