Resumo

GRIMA-GALLARDO, Pedro et al. Synthesis, crystal structure and magnetic behavior of CuCo₂InTe₄ and CuNi₂InTe₄. Rev. LatinAm. Metal. Mater. [online]. 2017, vol.37, n.1, pp.83-92. ISSN 0255-6952.

Polycrystalline samples of nominal CuCo₂InTe₄ and CuNi₂InTe₄ were prepared by the melt and anneal method and the products characterized by powder X-ray diffraction and SQUID techniques. It was found that CuCo₂InTe₄ and CuNi₂InTe₄ crystallize in the tetragonal space group (Nº 121), Z = 2, in a stannite-type structure, with the binaries CoTe and NiTe as secondary phases, respectively. The magnetic behavior of CuCo₂InTe₄ is that of a superparamagnetic state with an irreversibility temperature of ~450K and a maximum coercive field of 35 Oe at 2K; whereas CuNi₂InTe₄ shows two magnetic components, one diamagnetic an another weak ferromagnetic.

Palavras-chave : CuCo₂InTe₄; CuNi₂InTe₄; x-ray diffraction; magnetism.

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