Downscaling Effect on the Superconductivity of Pd3Bi2X2 (X = S or Se) Nanoparticles Prepared by Microwave-Assisted Polyol Synthesis

Roslova M, Opherden L, Veremchuk I, Spillecke L, Kirmse H, Herrrnannsdoerfer T, Wosnitza J, Doert T, Ruck M (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Inorganic Chemistry American Chemical Society

Book Volume: 55

Pages Range: 8808-8815

Journal Issue: 17

DOI: 10.1021/acs.inorgchem.6b01326

Abstract

Pd3Bi2S2 and Pd3Bi2Se2 have been successfully prepared in the form of nanoparticles with diameters of ∼50 nm by microwave-assisted modified polyol synthesis at low temperatures. The composition and morphology of the samples have been studied by means of powder X-ray diffraction as well as electron microscopy methods, including X-ray intensity mapping on the nanoscale. Superconducting properties of the as-prepared samples have been characterized by electrical resistivity measurements down to low temperatures (∼0.2 K). Deviations from the bulk metallic behavior originating from the submicrometer nature of the samples were registered for both phases. A significant critical-field enhancement up to 1.4 T, i.e., 4 times higher than the value of the bulk material, has been revealed for Pd3Bi2Se2. At the same time, the critical temperature is suppressed to 0.7 K from the bulk value of ∼1 K. A superconducting transition at 0.4 K has been observed in nanocrystalline Pd3Bi2S2. Here, a zero-temperature upper critical field of ∼0.5 T has been estimated. Further, spark plasma-sintered Pd3Bi2S2 and Pd3Bi2Se2 samples have been investigated. Their superconducting properties are found to lie between those of the bulk and nanosized samples.

Authors with CRIS profile

Michael Ruck

Involved external institutions

Technische Universität Dresden DE Germany (DE) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Humboldt-Universität zu Berlin DE Germany (DE) Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE)

How to cite

APA:

Roslova, M., Opherden, L., Veremchuk, I., Spillecke, L., Kirmse, H., Herrrnannsdoerfer, T.,... Ruck, M. (2016). Downscaling Effect on the Superconductivity of Pd3Bi2X2 (X = S or Se) Nanoparticles Prepared by Microwave-Assisted Polyol Synthesis. Inorganic Chemistry, 55(17), 8808-8815. https://doi.org/10.1021/acs.inorgchem.6b01326

MLA:

Roslova, Maria, et al. "Downscaling Effect on the Superconductivity of Pd3Bi2X2 (X = S or Se) Nanoparticles Prepared by Microwave-Assisted Polyol Synthesis." Inorganic Chemistry 55.17 (2016): 8808-8815.

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