Magnetic correlation in ${\mathrm{YBaCo}}_4{\mathrm{O}}_7$ with kagome and triangular lattices was studied through inelastic-neutron-scattering measurements on a single crystal sample. The broad magnetic excitation was observed below 45 meV and showed dispersions both within the $c$ plane and along the $c$ axis. The wave vector with the minimum energy of the magnetic excitation was totally different from the magnetic Bragg point. Our analysis with the first-moment-sum rule suggests that Co ions in ${\mathrm{YBaCo}}_4{\mathrm{O}}_7$ form a unique three-dimensional network with the geometrically frustration.

中文翻译：

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舞果和三角晶格上YBaCo4O7的磁相关

磁相关 ${\mathrm{Ba}}_4{\mathrm{Ø}}_7$通过对单晶样品进行非弹性中子散射测量研究了具有kagome和三角形晶格的晶体。在45 meV以下观察到了广泛的磁激发，并表现出两者内的弥散。$C$ 飞机和沿 $C$轴。具有最小磁激发能量的波矢与磁布拉格点完全不同。我们对第一矩和规则的分析表明，${\mathrm{Ba}}_4{\mathrm{Ø}}_7$ 形成了一个具有几何挫折感的独特三维网络。