Magnetic Properties of a Solid Solution Fe_1−xAg_xCr₂S₄ (0 < x < 0.2)

• Published in: Magnetochemistry
• Main Authors: Galina G. Shabunina, Elena V. Busheva, Pavel N. Vasilev, Nikolay N. Efimov
• Format: Article
• Language: English
• Published: MDPI AG 2022-09-01
• Subjects: magnetic semiconductor; paramagnetism; chalcogenide spinel
• Online Access: https://www.mdpi.com/2312-7481/8/10/112

The magnetic properties of the Fe_1−xAg_xCr₂S₄ (0 < x < 0.2) solid solution were investigated in the temperature range 4–300 K in a DC field of 0.1 and 45 kOe. Fe_1−xAg_xCr₂S₄ is characterized by the transition temperature from the paramagnetic to the ferromagnetic state (T_c) and the irreversibility temperature (T_irr). The replacement of iron with silver ions in Fe_1−xAg_xCr₂S₄ leads to an increase in the Curie temperatures from 185 K (x = 0) to 216 K (x = 0.2) and T_cusp from 45 K (x = 0) to 125 K (x = 0.2). A section of the Fe_1−xAg_xCr₂S₄ magnetic phase diagram in the region under study has been constructed. The diagram reveals the following regions: paramagnetic, ferromagnetic, region of conditionally recurrent spin-glass (SG), and below 10 K a region associated with orbital ordering.