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Magnetic relaxation in Mn-12-methanoate molecular magnet

We report magnetic moment measurements of the new synthesized molecular magnet Mn-12-methanoate, It shows splitting between zero-field-cooled and field-cooled magnetic moment dependence On temperature below, blocking temperature, which amounts to approximate to 3 K in weak magnetic field. Above this temperature the sample is superparamagnetic. Also, this behaviour is emphasized by relaxation measurements and magnetic viscosity calculation

magnetic molecular materials; magnetic relaxation; magnetization-quantum tunneling

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