Abstract
We report the results of an investigation of optical spectroscopy of two terbium concentrated materials : TbF3 and TbAlO3 at very low temperature. From magnetic measurements and neutron diffraction data, it is known that isomorphous TbF3 and TbAlO3 orders ferromagnetically below Tc=3.95 K and antiferromagnetically below T = 3.8 K respectively.
© 1984 Optical Society of America
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