The Collinear Magnetic Phases of the Geometrically-Frustrated Antiferromagnet CuFeO2: The Importance of Stacking
Abstract
The correct stacking of hexagonal layers is used to obtain accurate estimates for the exchange and anisotropy parameters of the geometrically-frustrated antiferromagnet CuFeO2. Those parameters are highly constrained by the stability of a collinear metamagnetic phase between fields of 13.5 and 20 T. Constrained fits of the spin-wave frequencies of the collinear phase below 7 T are used to identify the magnetic unit cell of the metamagnetic phase, which contains two hexagonal layers and 10 Fe3+ spins.
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