
Magnetic, Photoluminescent and Semiconductor Properties of a 4f-5d Bromide Compound
Abstract
A novel 4f–5d material (HgDy6Br12)Hg8Br24 (1) is prepared by hydrothermal reactions and structurally characterized by single crystal X-ray diffraction. Compound 1 is characterized by a two-dimensional (2D) layered structure. A photoluminescence measurement with solid-state samples shows that this compound exhibits a strong emission in the blue region. A narrow optical band gap of 1.97 eV is revealed by a solid-state UV/Vis diffuse reflectance spectrum. The variable-temperature magnetic susceptibility obeys the Curie-Weiss law (cm= c/(T–q)) with C = 0.78 K and a Weiss constant θ = –0.38 K as revealed by the magnetic measurements, suggesting the existence of an antiferromagnetic interaction.
Keywords
Lanthanide; mercury; magnetism; photoluminescence; semiconductor
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PDFDOI: http://dx.doi.org/10.17344/acsi.2019.5630
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