Syntheses, Structure, Magnetism, and Optical Properties of the Ordered Interlanthanide Copper Chalcogenides Ln₂YbCuQ₅ (Ln = La, Ce, Pr, Nd, Sm; Q = S, Se): Evidence for Unusual Magnetic Ordering in Sm₂YbCuS₅

Abstract

Ln 2 YbCuQ 5 (Ln = La, Ce, Pr, Nd, Sm; Q = S, Se) have been prepared by direct reaction of the elements in Sb 2 Q 3 (Q = S, Se) fluxes at 900 °C. All compounds have been characterized by single-crystal X-ray diffraction methods and they are isotypic. ordering at 5.9 K, followed by negative magnetization at low external fields.

BaGa2SnSe6: a new phase-matchable IR nonlinear optical material with strong second harmonic generation response

“…Desirable properties for an IR NLO material include (1) a large NLO coefficient to increase the energy conversion efficiency, (2) a sufficiently large birefringence (Dn) to satisfy the phase-matching requirement, (3) a wide IR transparency region, (4) a high laser-induced damage threshold and (5) good chemical and thermal stability. 15 During the last few decades, research was widely carried out on metal chalcogenides, [16][17][18][19][20][21][22][23] a rich source of IR nonlinear optical materials. [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] Compared with oxides, metal chalcogenides have a much broader IR transmission range and hence are more suitable for IR NLO applications.…”

Ba2AgInS4 and Ba4MGa5Se12 (M = Ag, Li): syntheses, structures, and optical properties

“…Over the past decades, a large number of multinary chalcogenides with two or more metal cations have been synthesized, which exhibited interesting structures and thermoelectric, magnetic, transport, and optical properties. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Most of these compounds contained at least one alkali metal because the low-melting binary alkali metal polychalcogenides A 2 Q n (A = alkali metal; Q = S, Se, Te; n ≥ 1) can be used as a "reactive flux" to provide alkali metal and aid in crystal growth. 17 In contrast, the number of multinary chalcogenides containing an alkaline-earth metal is much lower, probably because the high-melting binary alkalineearth metal chalcogenides are poor reactive fluxes.…”

Synthesis, structure, magnetic and photoelectric properties of Ln3M0.5M′Se7 (Ln = La, Ce, Sm; M = Fe, Mn; M′ = Si, Ge) and La3MnGaSe7

“…[7][8][9][10][11][12][13][14][15][16] Therefore, the discoveries of new rare earth based chalcogenides are important and intriguing.…”

“…[1][2][3][4][5][6] Among the large family of chalcogenides, the rare earth chalcogenides have much more complex electronic conguration than the d-and p-block metal chalcogenides, resulting in their promising potentials for thermal, electrical, magnetic and optical applications. [7][8][9][10][11][12][13][14][15][16] Therefore, the discoveries of new rare earth based chalcogenides are important and intriguing.…”