Electron paramagnetic resonance study of magnetic ordering in MnPS3, Mn0.79PS3(4,4'-bipy)(0.42) and Mn0.84PS3(1,10-Phen)(0.64) compounds

We report Electron Paramagnetic Resonance (EPR) studies on intercalation fe rromagnets Mn0.79PS3(4,4'-bipy)(0.42) and M0.84PS3(1,10-phen)(0.64) and the ir antiferromagnetic host MnPS3, in the temperature range 300-15 K. The nat ure of the organic guest cation appears to have a strong influence on the m agnetic behaviour of this inorganic-organic hybrid system. The continued ap pearance of the exchange-narrowed sharp line, characteristic of the paramag netic phase, even at 15 K suggests that the hulk of the intercalate ferroma gnets in this system do not attain a completely ordered state.