Field-induced Incommensurate Lattice Modulations in the Delafossite CuFeO2
作者： Noriki Terada , Setsuo Mitsuda , Yoshikazu Tanaka , Yoshikazu Tabata , Koichi Katsumata
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摘要: The results of synchrotron X-ray diffraction measurements on a single crystal the triangular lattice antiferromagnet CuFeO 2 under zero and non-zero applied magnetic fields are reported. We find four satellite reflections at (0, 3+ q , 1/2), 4- 4-2 0), 3+2 0) with incommensurate wave number ∼0.415 in ferroelectric (FEIC) phase which appears field, H between 7 13 T low temperatures. In partially disordered (PD) exists temperature, range 11 14 K, we two 1/2) ∼0.4. dependence these studied. interpret that observed FEIC arise from modulations caused by magnetoelastic coupling underlying structure. observation reflection finite ...
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