Determination of the easy axis of magnetization in terbium–yttrium iron garnet Tb1Y2Fe5O12 at low temperatures

摘要: Abstract Experimental investigations have been carried out on a spherical single crystal of terbium yttrium iron garnet (Tb1Y2Fe5O12) by means magnetization measurements in strong dc magnetic fields up to 200 kOe applied along the , and crystallographic directions at low temperatures (T be easy axis spontaneous while direction remains more difficult axis. The measurement 4.2 K leaving sample rotate freely itself suggests that is direction. However, due anisotropy energies associated with both which are close each other, phase becomes stable as soon field exceeds 10 kOe or temperature higher than 10 K. results compared previous works.