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- Oh, Yoon Seok
- Laboratory for Strong Correlation in Quantum Materials
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55 Tesla coercive magnetic field in frustrated Sr3NiIrO6
- Author(s)
- Singleton, John, Kim, Jae-Wook, Topping, Craig, Hansen, Anders, Mun, Eun-Deok, Ghannadzadeh, Saman, Goddard, Paul, Luo, Xuan, Oh, Yoon Seok, Cheong, Sang-Wook, Zapf, V
- Issued Date
- 2015-03-05
- Citation
- 2015 APS March Meeting
- Abstract
- We have measured extremely large coercive magnetic fields of up to 55~T in Sr3NiIrO6, with a switched magnetic moment ≈0.8 μB per formula unit. As far as we are aware, this is the largest coercive field observed thus far. This extraordinarily hard magnetism has a completely different origin from that found in conventional ferromagnets. Instead, it is due to the evolution of a frustrated antiferromagnetic state in the presence of strong magnetocrystalline anisotropy due to the overlap of spatially-extended Ir4+ 5d orbitals with oxygen 2p and Ni2+ 3d orbitals. This work highlights the unusual physics that can result from combining the extended 5d orbitals in Ir4+ with the frustrated behaviour of triangular lattice antiferromagnets.
- Publisher
- Amercian Physical Society
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