On magnetic relaxation in antiferromagnetic horse-spleen ferritin proteins
- 1 January 1994
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 6 (1) , 263-266
- https://doi.org/10.1088/0953-8984/6/1/025
Abstract
The authors report low-temperature magnetic relaxation measurements of nanometre-scale antiferromagnetic horse-spleen ferritin particles. It is argued that the magnetic relaxation signal is due to the excess uncompensated spins. Their key observation is the non-thermal character of the relaxation below 2 K. The observed features are in agreement with theoretical suggestions on quantum tunnelling of the Neel vector between easy directions.Keywords
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