Microscopic magnetic structures of Tb1-xCaxMnO 3 (x ∼ 1) have been investigated by means of small-angle neutron scattering (SANS) and Lorentz micrograph experiments. We have found that ferromagnetic microclusters of the order of ∼10 nm are invaded in the antiferromagnetic matrix with the G-type spin structure. We have interpreted the coexistence of the magnetic clusters in terms of intrinsic change separation.
- Charge separation
- Lorentz micrograph
- Neutron powder diffraction
- Perovskite-type manganites
- Small-angle neutron scattering
- Synchrotron radiation x-ray powder diffraction