Synthesis and characterization of Fe doped HfO$_{\mathrm{\mathbf{2}}}$

Hafnium oxide (HfO$_{\mathrm{2}})$ materials were found to be useful for various applications such as in dielectric barriers, capacitors, oxygen detectors etc. We have synthesized Hf$_{\mathrm{1-x}}$Fe$_{\mathrm{x}}$O$_{\mathrm{2}}$ (0 $\le $ x $\le $ 0.05) materials by precipitation method using hafnium tetrachloride (HfCl$_{\mathrm{4}})$, iron chloride, and sodium hydroxide. The synthesis method was followed as reported earlier [1] with some modifications. The obtained precipitate of Hf$_{\mathrm{1-x}}$Fe$_{\mathrm{x}}$(OH)$_{\mathrm{4}}$ was dried overnight at 80$^{\mathrm{o}}$C. The dried materials were ground with a pestle and mortar and the powders were finally calcined at 600$^{\mathrm{o}}$C for 3 hrs, resulting in Hf$_{\mathrm{1-x}}$Fe$_{\mathrm{x}}$O$_{\mathrm{2}}$ nanoparticles. The synthesized nanoparticles were characterized using X-ray diffraction and micro-Raman spectroscopy. Thermal characterizations were carried out using DSC and TGA studies. The detailed results and analysis will be presented and discussed during the APS NE October 2017 meeting. \\ \\$[1]$A. Ramadoss, K. Krishnamoorthy, S.J. Kim \textit{Mat. Lett.} \textbf{75} (2012) 215.