UC知道帮忙翻译段专业论文吧（急）（2）
来源：百度知道 编辑：UC知道 时间：2024/06/17 07:02:02
SG Fm3m are of significant interest due to their interesting properties.1 Most of the materials having fluorite structure are halides, oxides, or chalcogenides of univalent or tetravalent cations and show predominantly ionic bonding. However,the intermetallics of gold and platinum A with Al, Ga,and In X are the few that crystallize in the CaF2 structure.2
While the fluorite structure is the stable form at room temperature for all the Au compounds and PtAl2, it is stable at
high temperatures only for PtGa2 and PtIn2.3 These phases
exhibit a striking variety of colors ranging from violet
AuAl2 to copper PtIn2 to brass PtAl2, PtGa2.4 In them ,the A-X distance is about 0.2 Å less than the sum of the 12
coordination radii of the constituent atoms suggesting a covalent
character of the bond. These compounds also serve as
prototype materials for studying the Au/Pt A 5d bands in
<间、氟化钙与空间结构神光化合物具有显着的利益集团,由于他们性能.1最有趣的材料具有结构卤化物萤石、氧化物、硫或叶或四价阳离子和表演为主离子键.但是,一间黄金、铝铂、镓、十大结晶,是为数不多的萤石氟化钙及既有的稳定结构形式,是在室温和各盟盐化合物、它是稳定的高温和ptin2.3ptga2只打了这四期展出多种颜色从紫aual2ptin2以铜为黄铜炉、ptga2476.4人,在A距离约为0.2×Å少于12总和协调原子半径制宪建议价债券品格.这些化合物也作为学习材料原型凹/铂5D号一间带在较大型的分离.原始细胞含有一、两项第十一个原子价电子的原子与7月1金/每三、铂原子十大.这导致良好的导电导致应用aual2作为太阳光谱选择性absorber5和盐作为防腐蚀金属material.6低温研究表明,这些化合物中许多人成为超导低胆固醇、精密仪器是受雇于参考测温低于1k.7电子结构ax2computationally8双方间已展开调查和实验.9月13日X射线吸收近边光谱测量aual2显示有强烈的化学键具有损耗有效5D号轨道count.14大幅化学键涉及金-5D号轨道的aual2,可见提高3人强烈的L2和L35D号>边缘跃迁.在aual2洞计数分布变化所致化学键之间5d5/2和国家的事业5d3/2紫色aual2.14在aux2化合物的晶格常数随温度上升而单调4.2K至室温aual2、钾为715auga2auin2并参.15观察这些材料体积收缩melting.3早些时候调查熔点随压力变化on3aux2×=,镓、铝透露,aual2auga2压力减小,而auin2仍不断地约三产业取得了积极的斜坡,然后在较高压力接近五月产业.早先的研究auin2参.12月气温变化的阻力和压力,表示合作社热电电力电子或结构改变周围存在异常压力在暴风内皮al.3同步数据融合基于角度色散高压X射线衍射测量adxrd排除结构性转型的异常.