Field dependence of the electronic phase separation in Pr0.67Ca0.33MnO3 by small-angle magnetic neutron scattering

We have studied, by small-angle magnetic neutron scattering, the evolution induced by the application of a magnetic field on the coexistence of ferromagnetism and antiferromagnetism in a crystal of Pr 0 . 6 7 Ca 0 . 3 3 MnO 3 . The results are compared to magnetic measurements, which provide the evolution of the ferromagnetic fraction. These results show that the growth of the ferromagnetic phase corresponds to an increase in the thickness of the ferromagnetic "cabbage" sheets.