For my sample at 300K Ms is 94.7 emu g-1; Hc = 273 Oe; Mr = 4.9 emu g-1; Mr : Ms = 0.05, it may be called as superparamagnetic?

01 June 2020 0 7K Report

I have a query that if Mr/Ms is less than 25%, can we called the materials in the super-paramagnetic state as mentioned in the following paper. My data are as follows: at 300K Ms is 94.7 emu g-1; Hc = 273 Oe; Mr = 4.9 emu g-1; Mr: Ms = 0.05, it may be called as in super-paramagnetic state at RT?

"...........the low remanence value of less than 25% clearly indicates that the ␣-Fe2O3 nanoparticles are in a super-paramagnetic state at room temperature." Journal of Hazardous Materials 273 (2014) 127–135

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