Low Temperature Study of Mechanically Alloyed EuFeO$_{3}$

Rare-earth (R) and transition metal (T) perovskite Oxides RTO$_{3}$ are of great interest in Physics, besides potential applications in variety of devices. Here, we present study of EuFeO$_{3}$ synthesized by mechanical alloying. The M\"{o}ssbauer measurement on EuFeO$_{3}$ is one of the rare cases where both the R and the T sites are probed in the same compound. Room temperature M\"{o}ssbauer study is already reported [1], here we report low temperature M\"{o}ssbauer measurements. Measurements indicate that hyperfine magnetic field increased with decreasing temperature. The $^{57}$Fe M\"{o}ssbauer spectra depicts that there is only a magnetic sextet at 20K implying pure ferromagnetic state. As temperature increased two non-magnetic states appeared and their propensity increased with temperature. The $^{151}$Eu M\"{o}ssbauer measurements show that the line width at half maxima has a peak between 50K and 100K. [1] Seifu, D., Takacs, L., Kebede, A., ``$^{151}$Eu and $^{57}$Fe M\"{o}ssbauer study of mechanically alloyed EuFeO$_{3}$.'' J. of Mag. and Mag. Matt., \textbf{302}, pp 479 -- 483, 2006.