polymeric structures in the solid state while 3 is strictly monomeric. For compound2crystals suitable for complete structure solution could not be grown. Crystallization trials of 2 from hexane and toluene resulted in oxygen bridged tetramer [Bi2O(OCMe2iPr)4]2 (6). Compound 4 has dimericstructure and compound 5 forms loose tetramers as reported earlier. The structure of toluene solvatedcrystal [Bi(O2CtBu)3]4·2MeC6H5
在搜寻时 铋 原子层沉积(ALD)薄膜制备的前驱体3 铋醇盐Bi(O t Bu)3(1),双(OCMe 2 i Pr)3(2),双(OC i Pr 3)3(3),β-二酮酸铋, 双(三)3(4),以及羧酸铋合成并评估了Bi(O 2 C t Bu)3(5)。这些化合物的特征是中国,NMR,MS和TGA /SDTA。解决了化合物1和3的早期未知晶体结构。化合物1以固态形式形成二聚体和松散的聚合物结构,而化合物3则严格是单体。对于化合物2,适合于完整结构溶液的晶体无法生长。的结晶试验2从正己烷 和 甲苯 导致 氧 桥接的 四聚体[Bi 2 O(OCMe 2 i Pr)4 ] 2(6)。如先前所报道,化合物4具有二聚体结构,并且化合物5形成松散的四聚体。解决了甲苯溶剂化晶体[Bi(O 2 C t Bu)3 ] 4 ·2MeC 6 H 5(7)的结构。所有研究的化合物均显示出相对较好的挥发性和热稳定
Synthesis, X-ray structure and bonding of tris(2,2-6,6-tetramethylheptane-3,5-dionato) bismuth(III)
The title compound [Bi(dpm)3] has been synthesized and its molecular structure determined by single-crystal X-ray diffraction. Two different crystalline forms have been found: [(Bi(dpm)3]·H2O (1) and [(Bi(dpm)3]·3H2O (2). 1 crystallizes in the space group P21/n with . 2 crystallizes in the space group Pbcn with . The coordination around the Bi atom consists of a distorted pentagonal pyramid with two
Deposition of Bi[sub 4−x]Nd[sub x]Ti[sub 3]O[sub 12] Films with Direct Liquid Injection Metallorganic Chemical Vapor Deposition and Characterization of Ferroelectric Properties
作者:Moon-Kyun Song、Shi-Woo Rhee
DOI:10.1149/1.2347107
日期:——
Using Bi(tmhd) 3 , Nd(tmhd) 3 and Ti(O i C 3 H 7 ) 2 (tmhd) 2 (tmhd: 2,2,6,6-tetramethyl-3,5-heptanedione), Bi 4-x Nd x Ti 3 O 12 (BNT) thin films were prepared on Pt(111)/Al 2 O 3 /SiO 2 /Si substrates by direct liquid injection metallorganic chemical vapor deposition (DLI-MOCVD). The composition of BNT film was dependent on the deposition temperature and the concentration of the mixture solution
使用 Bi(tmhd) 3 、Nd(tmhd) 3 和 Ti(O i C 3 H 7 ) 2 (tmhd) 2 (tmhd:2,2,6,6-四甲基-3,5-庚二酮)、Bi 4- x Nd x Ti 3 O 12 (BNT) 薄膜通过直接液体注入金属有机化学气相沉积 (DLI-MOCVD) 在 Pt(111)/Al 2 O 3 /SiO 2 /Si 衬底上制备。BNT 薄膜的组成取决于沉积温度和混合溶液的浓度。此外,还可以通过Bi层钙钛矿结构(Bi 4 Ti 3 O 12 )的Bi位点中Bi和Nd元素的竞争取代来调节溶液中Bi和Nd前驱体的浓度来控制膜组成。在 450°C 下沉积的 BNT 膜(Bi 4-x Nd x Ti 3 O 12,x = 0.89)具有 (117) 取向,并且该 BNT 膜的结晶度通过退火得到改善。在 450°C 下沉积并在 650°C 下在 O 2 气氛中退火 60