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Abstract <p>Solid solutions of Co<sub>1–<i>x</i></sub>Cu<sub><i>x</i></sub>Cr<sub>2</sub>S<sub>4</sub> (<i>х</i> = 0–0.6), spanning the compositional range between the ferrimagnet СоCr<sub>2</sub>S<sub>4</sub> (<i>T</i><sub><i>C</i></sub> = 222 K) and the ferromagnet CuCr<sub>2</sub>S<sub>4</sub> (<i>T</i><sub><i>C</i></sub> <i>=</i> 377 K), were synthesized via a solid-state reaction. Their magnetic properties were studied using a AC magnetic susceptibility measurement method in the temperature range of 2–300 K under an alternating magnetic field with an amplitude of 1 Oe at various frequencies (100, 1000, 5000, and 10 000 Hz). The substitution of Co by Cu from <i>x</i> = 0 to <i>x</i> = 0.6 was found to increase the magnetic ordering temperature from 222 K to 287 K. The nature of the magnetic phase transitions was determined, revealing a transition to a frustrated spin-glass state in the sample with <i>x</i> = 0.05.</p>

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Synthesis and Magnetic Properties of Co1–xCuxCr2S4 (х = 0–0.6) Solid Solutions

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • E. V. Busheva,
  • M. T. Suanov,
  • G. G. Shabunina,
  • P. N. Vasilev

摘要

Abstract

Solid solutions of Co1–xCuxCr2S4 (х = 0–0.6), spanning the compositional range between the ferrimagnet СоCr2S4 (TC = 222 K) and the ferromagnet CuCr2S4 (TC = 377 K), were synthesized via a solid-state reaction. Their magnetic properties were studied using a AC magnetic susceptibility measurement method in the temperature range of 2–300 K under an alternating magnetic field with an amplitude of 1 Oe at various frequencies (100, 1000, 5000, and 10 000 Hz). The substitution of Co by Cu from x = 0 to x = 0.6 was found to increase the magnetic ordering temperature from 222 K to 287 K. The nature of the magnetic phase transitions was determined, revealing a transition to a frustrated spin-glass state in the sample with x = 0.05.