Abstract
The concept of uniform bulk magnetization in superparamagnetic particles is examined critically. By a straightforward idealization of the conditions met in actual superparamagnetic samples, it is shown that this concept is related to a fundamental problem of the physical statistics of magnetic first-order phase transitions. Thus, the fact that the concept is applicable to experimental data on superparamagnets has far-reaching consequences with respect to the nature of the magnetic transition at zero field.
- Received 15 September 1969
DOI:https://doi.org/10.1103/PhysRevB.1.3133
©1970 American Physical Society