Magnetic, Optical, and Electronic Properties of the Phosphide OxidesREZnPO (RE = Y, La–Nd, Sm, Gd, Dy, Ho)
作者:Hannes Lincke、Robert Glaum、Volker Dittrich、Marcus Tegel、Dirk Johrendt、Wilfried Hermes、Manfred H. Möller、Tom Nilges、Rainer Pöttgen
DOI:10.1002/zaac.200800066
日期:2008.7
and 7.72 μB/RE atoms, respectively. β-CeZnPO and β-PrZnPO show antiferromagnetic order with Neel temperatures of 7.4 (Ce) and 2.2 (Pr) K. GdZnPO shows no magnetic ordering down to 2 K. Single crystal absorption spectra measured for REZnPO (RE = Y, La, Pr, Nd, Sm, Dy) in the NIR-Vis region reveal unexpected variations for the optical band gap of these phosphide oxides. For RE = Pr, Nd, Sm, Dy, Ho f-f
磷化物氧化物 REZnPO(RE = Y、La-Nd、Sm、Gd、Dy、Ho)的形状良好的黄色至红色透明单晶是从密封二氧化硅安瓿中的 NaCl/KCl 助熔剂中的元素和 ZnO 合成的。四种结构(NdZnPO 型,R3m)从单晶 X 射线衍射仪数据中精炼而成:a = 388.5(2),c = 3032(1) pm,wR2 = 0.0380,YZnPO 的 360 F2 值,a = 394.6(2) , c = 3071(1) pm, wR2 = 0.0587, SmZnPO 的 F2 值为 226, a = 392.2(2), c = 3056(1) pm, wR2 = 0.0262, GdZnPO 的 F2 值为 462, a3 (3689) ), c = 3030.5(4) pm, wR2 = 0.0453, DyZnPO 有 217 个 F2 值,每个细化有 14 个变量。该结构由 (RE3+O2−)