High-Field Magnetism of the S = 5/2 Triangular-Lattice Antiferromagnet CuFe1-xGaxO2 (x=0–0.028)
作者： Takahito Fujita , Shojiro Kimura , Takanori Kida , Takahiro Kotetsu , Masayuki Hagiwara
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摘要: We have performed multifrequency electron spin resonance (ESR), electric polarization, and magnetization measurements on single crystals of the triangular-lattice antiferromagnet CuFe1-xGaxO2 (x = 0.000–0.028) in high magnetic fields. compared ESR results with other (electric polarization measurements) to clarify origin expansion a ferroelectric incommensurate (FEIC) phase induced by doping nonmagnetic Ga3+ ions. observed rapid increase linewidth large shift transition field from four-sublattice collinear FEIC accompanied jump spontaneous slight found that is highly correlated this shift. As result, we succeeded explaining as well change broadening lowest excitation branch an in...
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