ESR and Mössbauer spectroscopic study of Sr-doped ytterbium ferromanganites

In this paper, we have studied the crystal structure of strontium-substituted manganite and ytterbium ferromanganites Yb$_{0.82}$Sr$_{0.18}$Mn$_{1-x}$Fe$_{x}$O$_{3}$ ($x$ = 0–0.2) by using X-ray diffraction analysis. Magnetic microstructure has been studied by electron paramagnetic resonance and nuclear gamma-resonance (Mössbauer) spectroscopy. We have observed phase separation in the ceramics for antiferromagnetic, superparamagnetic, and ferromagnetic phases.