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Polarized Neutron Measurements of the Internal Magnetization of a Ferrimagnet Across its Compensation Temperature...

Publication Type
Journal
Journal Name
Journal of Magnetism and Magnetic Materials
Publication Date
Page Number
173273
Volume
629

We present the first polarized neutron transmission image of a model Néel ferrimagnetic material, polycrystalline terbium iron garnet (Tb3Fe5O12, TbIG for short), as it is taken through its compensation temperature Tcomp where the macroscopic magnetization vanishes. Our polarized neutron imaging data and the additional supporting measurements using neutron spin echo spectroscopy and SQUID magnetometry are all consistent with a vanishing internal magnetization at Tcomp.