Stashkova L.A.
1, Bartashevich A. M.1,2, Terentev P. B.1,2, Gaviko V. S.1,2, Gerasimov E. G.1,2, Mushnikov N. V.1,2
1M.N. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia
2Ural Federal University after the first President of Russia B.N. Yeltsin, Yekaterinburg, Russia
Email: lshreder@imp.uran.ru, bartashevich@imp.uran.ru, terentev@imp.uran.ru, gaviko@imp.uran.ru, mushnikov@imp.uran.ru
X-ray diffraction and differential scanning calorimetry have been used to study changes in the lattice parameters and Neel temperature of the compounds GdMn2(Ge1-xSix)2 (x=0-1) with increasing Si content. It is shown that substitution of Ge by Si leads to an 8 % decrease in the unit cell volume of the compounds at room temperature. It is found that the Neel temperature of the compounds increases with increasing Si content from 365 K at x=0 to 465 K at x=1. The magnetic phase diagram of the system GdMn2(Ge1-xSix)2 is constructed according to the obtained data. Keywords: rare-earth intermetallics, magnetic phase transitions, magnetic phase diagram, X-ray diffraction, differential scanning calorimetry.
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