Conglomerados magnéticos en el sistema de aleaciones (CuInSe₂)₁₋ₓ(TaSe)ₓ (0 < x ≤ 0, 5) Recibido: /agosto, 2021; Aceptado: /noviembre, 2021
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Abstract
Muestras policristalinas del sistema (CuInSe2)₁₋ₓ (TaSe)x fueron preparadas por la técnica de fusión y recocido en el rango de composiciones 0 < x ≤ 0, 5. Se encontró que la solubilidad del TaSe en la matriz ternaria del CuInSe2 es de aproximadamente 10%; sin embargo, hasta la composición x = 0, 5 tienen una fase principal de tipo tetragonal CuInSe2 con trazas de la fase TaIn0,67Se2. Un diagrama de fases T-x preliminar es presentado. Para determinar el comportamiento magnético inducido, las medidas de susceptibilidad magnética DC fueron estimadas en función de la temperatura, usando el protocolo de Enfriamiento Cero Campo-Enfriamiento con Campo (ECC-EC) en las muestras x = 0, 05 y 0, 5. Se encontró que el comportamiento magnético evoluciona de diamagnético (CuInSe2, x = 0) a paramagnético (x = 0, 05) y ferromagnético débil (x = 0, 5). La histéresis observada entre las curvas ECC y EC, para x = 0, 05 y x = 0, 5, sugiere la presencia de conglomerados magnéticos; el ajuste de las curvas con la función de Langevin muestra que los conglomerados están compuestos por aproximadamente 103 átomos de Ta.
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