Thermal relaxation of field-induced irreversible ferromagnetic phase in Pr-doped manganites
Thermal relaxation of field-induced irreversible ferromagnetic phase in Pr-doped manganites
We have investigated the magnetic and transport properties of ${\mathrm{Pr}}_{0.65}{\mathrm{Ca}}_{0.35}{\mathrm{MnO}}_{3}$ and ${\mathrm{Pr}}_{0.82}{\mathrm{Na}}_{0.18}{\mathrm{MnO}}_{3}$ with almost the same doping level under various magnetic fields. Upon applying a field of 4 T, both compounds undergo a metamagnetic transition from antiferromagnetic (AFM) to ferromagnetic (FM) in the low-temperature region. The field-induced FM state is …