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Phase Separation and the Low-Field Bulk Magnetic Properties of Pr0.7Ca0.3MnO3

I. G. Deac·J. F. Mitchell·P. Schiffer
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Abstract

We present a detailed magnetic study of the perovskite manganite Pr0.7Ca0.3MnO3 at low temperatures including magnetization and a.c. susceptibility measurements. The data appear to exclude a conventional spin glass phase at low fields, suggesting instead the presence of correlated ferromagnetic clusters embedded in a charge-ordered matrix. We examine the growth of the ferromagnetic clusters with increasing magnetic field as they expand to occupy almost the entire sample at H ~ 0.5 T. Since this is well below the field required to induce a metallic state, our results point to the existence of a field-induced ferromagnetic insulating state in this material.

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I. G. Deac, J. F. Mitchell, P. Schiffer. 2000-12-08. Phase Separation and the Low-Field Bulk Magnetic Properties of Pr0.7Ca0.3MnO3. https://doi.org/10.1103/physrevb.63.172408

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