Abstract
A single crystal of 7% Fe-doped (La0.7Pr0.3)0.65Ca0.35MnO3 shows up as a typical relaxor ferromagnet, where ferromagnetic metallic (FM) and charge-orbital-ordered insulating clusters coexist with controllable volume fraction by external stimuli. There, the persistent FM state can be produced by an electric-current excitation as the filamentary region, the magnetization in which is increased by ∼0.4μB per Mn. A clear distinction from the current heating effect in a magnetic field, which conversely leads to a decrease in FM fraction, enables us to bidirectionally switch both the magnetization and resistance by applying the voltages with different magnitudes.
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