Magnetic inhomogeneity of lanthanum manganites single crystals

The magnetic inhomogeneity of the single crystals of La1−xDxMnO3, where D=Ca, Sr, Ba, is studied. The Curie temperature distribution function is found. The form of this function is shown to depend on whether the mean value of the divalent element concentration is close to the “optimal” concentration (≈1/3) or not. The standard deviation for Curie temperature is evaluated. The correlation between the distribution coefficient for divalent elements and the standard deviation is established.