Karpovich, N.F.Pugachevsky, M.A.Panfilov, V.I.Kuzmenko, A.P.Dobromyslov, M.B.2016-04-072016-04-072015N.F. Karpovich, M.A. Pugachevsky, V.I. Panfilov, et al., J. Nano- Electron. Phys. 7 No 4, 04076 (2015)http://essuir.sumdu.edu.ua/handle/123456789/44544The nanopowders of the transition metal ZrO2 and HfO2 oxides were obtained by the hydrothermal autoclave synthesis. The nanoparticles possess a rounded shape and a size range of 40 to 80 nm (ZrO2), of 10 to 40 nm (HfO2). X-ray diffraction analysis and electron microscopy show that the structure of the nanoparticles is monoclinic.encneHydrothermal synthesisNanoparticlesRefractory oxidesZirconiumHafniumArticle