Abstract
The magnetic field effects on the synthesis process, decomposition process, and the phase equilibrium of materials have been investigated via thermal analysis experiments in high magnetic fields (HF-DTA). In this review, the thermal analysis systems in high magnetic fields are described. The typical results obtained by HF-DTA are presented. The magnetic field effects on the synthesis process of the high-Tc superconductors and the phase equilibrium of ferromagnetic materials are described. The results of HF-DTA experiments show that the phase equilibriums of Bi-Mn system and Fe-C alloys are drastically changed by applying high magnetic fields. In addition, HF-DTA experiments were performed for various compositions of Bi-Mn alloys. BiMn binary phase diagrams in high magnetic fields were shown. The magnetic field effects on the phase equilibrium were discussed in the basis of Zeeman energy of the ferromagnetic phase.
