Abstract
Magnetization measurements and magnetotransmission spectroscopy of the solid oxygen phase were performed in ultrahigh magnetic fields of up to 193 T. An abrupt increase in magnetization with large hysteresis was observed when pulsed magnetic fields greater than 120 T were applied. Moreover, the transmission of light significantly increased in the visible range. These experimental findings indicate that a first-order phase transition occurs in solid oxygen in ultrahigh magnetic fields, and that it is not just a magnetic transition. Considering the molecular rearrangement mechanism found in the dimer system, we conclude that the observed field-induced transition is caused by the antiferromagnetic phase collapsing and a change in the crystal structure.
- Received 17 January 2014
DOI:https://doi.org/10.1103/PhysRevLett.112.247201
© 2014 American Physical Society
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A New Phase of Solid Oxygen
Published 16 June 2014
A large applied magnetic field can bring solid oxygen into a novel phase—a consequence of the strong spin-lattice coupling in the molecular crystal.
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