The Collinear Magnetic Phases of the Geometrically-Frustrated Antiferromagnet CuFeO$_2$: The Importance of Stacking

Details The Collinear Magnetic Phases of the Geometrically-Frustrated Antiferromagnet CuFeO$_2$: The Importance of Stacking The Collinear Magnetic Phases of the Geometrically-Frustrated Antiferromagnet CuFeO$_2$: The Importance of Stacking

2008-07-24

arxiv.org/abs/0807.3948v1

Phys. Rev. B 78, 140407(R) (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

3 Figures

Scientific paper

10.1103/PhysRevB.78.140407

The correct stacking of hexagonal layers is used to obtain accurate estimates for the exchange and anisotropy parameters of the geometrically-frustrated antiferromagnet CuFeO$_2$. 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 $\uudd $ phase below 7 T are used to identify the magnetic unit cell of the metamagnetic $\uuudd $ phase, which contains two hexagonal layers and 10 Fe$^{3+}$ spins.

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