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X-ray diffraction pattern of powdered . The numbers in the figure indicate the mirror index. Peaks marked by x correspond to that of PbO-type FeSe. Inset shows the optical microscope image of cleaved surface.
Temperature dependence of magnetization for the crystal.
Temperature dependence of resistivity for the crystal.
(a) and (b) show the temperature dependence of resistivity for the crystal under magnetic fields of and up to 7 T with an increment of 1 T. (c) and (d) show the temperature dependence of and .
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