Neue ternäre Rhodium- und Iridium-Phosphide und -Arsenide mit U4Re7Si6-Struktur

Wurth, A.; Löhken, Anke; Mewis, A.

doi:10.1002/1521-3749(200106)627:6<1213::aid-zaac1213>3.0.co;2-z

Cited by 13 publications

(7 citation statements)

References 3 publications

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“…The bond distances in these tetrahedra average out to the average MgAs bond length found in Mg 3 As 2 (2.64 Å) . The distances in the Mg@As 6 octahedra, 2.8541(4) Å, are much longer than those in the tetrahedra, but are comparable to distances in inorganic magnesium arsenides such as MgAs 4 (2.71–2.92 Å), KMgAs (2.84 Å), Mg 4 Ir 7 As 6 (2.90 Å), R 2 Mg 3 SiAs 6 (2.69–2.86 Å), and KMg 4 As 3 …”

Section: Resultsmentioning

confidence: 84%

MgSiAs: An Unexplored System with Promising Nonlinear Optical Properties

Woo

Wang

et al. 2018

Adv Funct Materials

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Two new non-centrosymmetric ternary compounds, MgSiAs 2 and Mg 3 Si 6 As 8 , are discovered via metal flux and solid-state synthetic methods. MgSiAs 2 belongs to the well-known II-IV-V 2 family, which is extensively studied experimentally and computationally for their optical properties. MgSiAs 2 is computationally predicted but not experimentally known prior to this work. Mg 3 Si 6 As 8 crystallizes in a new non-centrosymmetric cubic chiral structure type with the Pearson symbol cP68. The syntheses, crystal structure, thermal and chemical stabilities, electronic structures, and optical properties of these two new compounds are investigated in this work. Optical absorption measurements and electronic structure calculations reveal the two compounds to be direct or pseudo-direct bandgap semiconductors (1.8-2 eV). The crystal structures of both compounds are non-centrosymmetric, though Mg 3 Si 6 As 8 belongs to the 432 chiral crystal class, which is optically active but does not exhibit second harmonic generation (SHG) behavior. The SHG response of MgSiAs 2 is 60% of that for AgGaS 2 , but MgSiAs 2 exhibits a higher laser damage threshold than AgGaS 2 at 33.2 MW cm −2 .

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Section: Resultsmentioning

confidence: 84%

MgSiAs: An Unexplored System with Promising Nonlinear Optical Properties

Woo

Wang

et al. 2018

Adv Funct Materials

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“…Refinement of the occupancy factors resulted in no deviation from full occupancy in good agreement with the chemical composition derived from the WDXS analysis. [2]. The ytterbium atoms are located in the center of deformed cuboctahedra formed by six Rh1 atoms and six Sb atoms.…”

Section: Methodsmentioning

confidence: 99%

Crystal structure of tetraytterbium septarhodium hexaantimony, Yb4Rh7Sb6

Leithe‐Jasper

Cardoso‐Gil

Ramlau

et al. 2006

Zeitschrift Für Kristallographie - New Crystal Structures

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“…RE4Rh7Pn6 [68] Eu2Pt7MgP3 [69] Eu2Pt7AlP3 [69] RE6Mg23Pn [70] [filled Th6Mn23] Er6(Pd16Sb7)Sb [71] Eu5(Mg3Cu16)As12 [60] Ca5TM19P12 [72] La3MgBi5 [73] RE3MnBi5 [74] RE3CuBi5 [75] MgNi2P [76] [Fe3C] PdPd2P [77] La3Mg5-xSb6 [60] Yb3(YbAu4)(Au2Sn4) [78]…”

Section: LImentioning

confidence: 99%

Chemical Flexibility of Mg in Pnictide Materials: Structure and Properties Diversity

et al. 2019

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Magnesium, element no. 12 on the periodic table, is the second member of the alkaline-earth metal family. Often, Mg is considered as an electropositive metal like its heavier congeners, Ca, Sr, and Ba. In this review, another important aspect of Mg chemistry, namely, the ability to form covalent bonds to more electronegative elements, is considered with a focus on pnictides. Magnesium's flexible coordination numbers and bond distances are similar to those of main group elements (Al) or late-and post-transition metals (Mn, Cu, Zn, Cd). In this work, selected Mg-pnictides are discussed to emphasize the chemical and structural diversity of Mg which results in a variety of physical properties. Thermoelectric, Mg-ion battery, and nonlinear optical applications of select Mg-containing compounds are summarized, providing examples on the exploitation of Mg chemical bonding flexibility for the design of novel functional materials.

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Neue ternäre Rhodium- und Iridium-Phosphide und -Arsenide mit U4Re7Si6-Struktur

Cited by 13 publications

References 3 publications

MgSiAs: An Unexplored System with Promising Nonlinear Optical Properties

MgSiAs: An Unexplored System with Promising Nonlinear Optical Properties

Crystal structure of tetraytterbium septarhodium hexaantimony, Yb4Rh7Sb6

Chemical Flexibility of Mg in Pnictide Materials: Structure and Properties Diversity

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