• Filimonov, A. V.
• Burkhanov, G. S.
• Vanina, P. Yu
• Politova, G. A.
• Ilushin, A. S.
• Pankratov, N. Yu
• Aleroeva, T. A.
• Alekseeva, O. A.

Abstract

<jats:title>Abstract</jats:title><jats:p>The multicomponent Sm<jats:sub>0.2</jats:sub>(Tb,Y)<jats:sub>0.8</jats:sub>Fe<jats:sub>2</jats:sub> system was obtained by the arc melting method, in which atoms with a high magnetic moment of terbium are replaced by yttrium atoms that do not carry a noticeable magnetic moment. In this system, varying not only the composition, but also external factors (temperature, magnetic field, etc.), it is possible to influence competing exchange interactions and observe a number of unique phenomena, such as, for example, the phenomenon of magnetic compensation. Using the method of high-temperature and low-temperature X-ray diffraction, the phase composition and atomic-crystalline structure of the Sm<jats:sub>0.2</jats:sub>(Tb<jats:sub>1-x</jats:sub>Y<jats:sub>x</jats:sub>)<jats:sub>0.8</jats:sub>Fe<jats:sub>2</jats:sub> alloys (x = 0, 0.2, 0.4, 0.6, 0.8, 1) were studied. The temperature dependences of the unit cell parameters were obtained in a wide temperature range from 80 to 700 K. Thermal expansion was investigated by strain-gauge method. The temperatures of magnetostructural phase transitions are determined, and a magnetic phase diagram is constructed.</jats:p>

Topics

• impedance spectroscopy
• phase
• x-ray diffraction
• phase transition
• thermal expansion
• Yttrium
• phase diagram
• Terbium