Structural, magnetic, and critical behavior of CrTe1-xSbx alloys
Structural, magnetic, and critical behavior of CrTe1-xSbx alloys
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DOI：
10.1140/epjp/s13360-021-01534-5
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发表时间：
2021-05
期刊：
影响因子：
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通讯作者：
M. Hamad;Y. Maswadeh;E. Martinez-Teran;A. El-Gendy;K. Ziq
中科院分区：
文献类型：
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作者：
M. Hamad;Y. Maswadeh;E. Martinez-Teran;A. El-Gendy;K. Ziq
我们研究了CrTe 1− x Sb x（0.0≤ x≤ 0.2）的结构和临界性质。XRD分析表明，Sb取代后的NiAs为六方晶系，空间群为P63/mmc（194）。结构的晶格细化揭示了a-晶格参数的微小变化，沿着c-轴具有更显著的减少。利用铁磁转变附近的磁化等温线研究了CrTe 1− x Sb x的临界行为。临界指数（）表明，所有样品（0.0≤ x≤ 0.2）均遵循类平均场行为，居里温度接近室温。Widom标度关系的结果表明，获得的值的自洽性。此外，居里温度附近的磁化等温线遵循一个普遍的标度行为，得到的临界指数的进一步支持。
We investigate the structural and critical properties of CrTe 1− x Sb x with 0.0≤ x≤ 0.2. The XRD patterns revealed that Sb substitution resulted in a pure NiAs-hexagonal structure with P6 3/mmc (194) space group. Lattice refinement of the structure revealed little changes in the a-lattice parameter, along with a more pronounced reduction in the c-axis. The critical behavior in CrTe 1− x Sb x has been investigated using the magnetization isotherms near the ferromagnetic transition. The obtained critical exponents () revealed that all samples (with 0.0≤ x≤ 0.2) closely follow a mean field-like behavior with ferromagnetic Curie temperature near room temperature. The results from Widom scaling relation indicate self-consistency of the acquired values. Moreover, the magnetization isotherms near the Curie temperature follow a universal scaling behavior, giving further support for the obtained critical exponents.