Synthesis, Optical, and Magnetic Properties of the Mixed Chalcogenide Semiconductor Series Eu(II)2SiSexS4-x, Prepared via the Flux-Assisted Boron Chalcogen Mixture Method DOI
Gopabandhu Panigrahi, Gregory Morrison, Mark D. Smith

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

We report a detailed structural study of series five new quaternary Eu(II)-containing mixed chalcogenide phases, Eu2SiSe0.85S3.15, Eu2SiSe2.4S1.6, Eu2SiSe2.6S1.4, Eu2SiSe3.1S0.9, and Eu2SiSe4, synthesized using the flux-assisted boron chalcogen mixture (BCM) method. High-quality crystals were grown, their crystal structures determined by single-crystal X-ray diffraction. All members Eu2SiSexS4−x crystallize in monoclinic system with space group P21/m, except which crystallizes P21 group. The structure exhibits complex three-dimensional network is primarily composed distorted trigonal prismatic EuQ6 polyhedra that are interconnected SiQ4 tetrahedra. Polycrystalline powders used for physical property measurements, including magnetic susceptibility UV–vis diffuse reflectance. Magnetic measurements indicated paramagnetic behavior slightly negative Weiss constant (θ = −13.54). band gaps materials from reflectance data, optical estimated to be 2.04(2) eV, 1.98(2) 1.90(2) eV respectively. Band gap tuning was achieved partially or fully replacing S sites Se.

Language: Английский

Synthesis, Optical, and Magnetic Properties of the Mixed Chalcogenide Semiconductor Series Eu(II)2SiSexS4-x, Prepared via the Flux-Assisted Boron Chalcogen Mixture Method DOI
Gopabandhu Panigrahi, Gregory Morrison, Mark D. Smith

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

We report a detailed structural study of series five new quaternary Eu(II)-containing mixed chalcogenide phases, Eu2SiSe0.85S3.15, Eu2SiSe2.4S1.6, Eu2SiSe2.6S1.4, Eu2SiSe3.1S0.9, and Eu2SiSe4, synthesized using the flux-assisted boron chalcogen mixture (BCM) method. High-quality crystals were grown, their crystal structures determined by single-crystal X-ray diffraction. All members Eu2SiSexS4−x crystallize in monoclinic system with space group P21/m, except which crystallizes P21 group. The structure exhibits complex three-dimensional network is primarily composed distorted trigonal prismatic EuQ6 polyhedra that are interconnected SiQ4 tetrahedra. Polycrystalline powders used for physical property measurements, including magnetic susceptibility UV–vis diffuse reflectance. Magnetic measurements indicated paramagnetic behavior slightly negative Weiss constant (θ = −13.54). band gaps materials from reflectance data, optical estimated to be 2.04(2) eV, 1.98(2) 1.90(2) eV respectively. Band gap tuning was achieved partially or fully replacing S sites Se.

Language: Английский

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