Abstract

High quality single crystals of EuInGe were grown from the reaction run with excess indium. X-ray diffraction investigations showed that EuInGe crystallizes with a pronounced subcell structure, superstructure of the ThSi2 type: Pnma space group, a = 4.9066(10) A, b = 3.9834(8) A and c = 15.964(3) A. However, the powder X-ray pattern reveals weak superstructure reflections, and the inclusion of additional reflections in the analysis points to a new type of structural arrangement, in a monoclinic system, P21/c space group, a = 7.9663(16) A, b = 4.9119(10) A, c = 16.465(5) A, and β = 104.03°. Magnetization measurements carried out as a function of temperature show multiple magnetic transitions at 13, 25, 44, and 70 K. In the temperature region above 100 K, the Curie–Weiss law is followed indicating a paramagnetic state of the sample. Magnetic moments deduced from this region suggest europium to be in a divalent state, which was further confirmed by 151Eu Mossbauer spectroscopic measurements. Experiments were...

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