Complex sentence: The Magneto-calorific effect' produces a change in temperature when a ferromagnetic object temperature rises above the Curie Point Temperature above which, the material becomes merely paramagnetic, this phase transition to the paramagnetic state can be exploited to turn heat into electricity.
Split into simpler sentences: The Magneto-calorific effect' produces a change in temperature when a ferromagnetic object temperature crosses the Curie Point. Above the Curie Pint the material becomes merely paramagnetic, this phase transition to the paramagnetic state can be exploited to turn heat into electricity.