Given the task definition and input, reply with output. In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

The Fermi distribution is used over the Curie relation in gauging this phenomenon in metals, resulting in a smaller susceptibility. This phenomenon contributes an induced field that adds to the applied field, and the resulting alignment tends to compete with thermal motion, thereby randomizing the dipole orientations. The dipoles interact weakly with each other in the absence of an external field. Occurring in free radicals and transition-metal compounds, FTP, identify this type of magnetism occurring in all atoms with free electrons whose spin moments are aligned with an external magnetic field.
Science