Solvothermal synthesis and characterisation of La1−xAxMnO3 nanoparticles
摘要:
The synthesis of La(1-x)A(x)MnO(3) (A = Ca, Sr, Ba) nanoparticles in nonaqueous solvents has been studied. For this solvothermal procedure benzyl alcohol and acetophenone were chosen as reaction media. After this treatment in mild conditions a precipitate was obtained, which, however, can be annealed to the crystalline perovskite structure. Our results show that acetophenone is more suited to obtain the clean pervoskite phase than benzyl alcohol. (c) 2006 Elsevier Inc. All rights reserved.
Synthesizing method for compound, and catalyst for synthesis reaction
申请人:Ley V. Steven
公开号:US20050215804A1
公开(公告)日:2005-09-29
A catalyst for synthesis reaction that can allow the cross coupling reaction at an improved yield, and yet can be collected after used for the reaction and recycled, and a synthesizing method for a compound using the same catalyst for synthesis reaction. In the Suzuki cross-couplings given by the following reaction formula (15), palladium containing perovskite-like composite oxide is used as a catalyst for synthesis reaction:
Influence of Precursor Solutions on the Ferroelectric Properties of Sol-Gel-Derived Lanthanum-Modified Lead Titanate (PLT) Thin Films
作者:S. Bhaskar、S. B. Majumder、E. R. Fachini、R. S. Katiyar
DOI:10.1111/j.1551-2916.2004.00384.x
日期:2004.3
Precursor chemistry was found to have a dominant effect on the electrical properties of sol-gel-derived Pb0.85La0.15TiO3 (PLT15) thinfilms prepared using different precursor sources for lanthanum, namely, lanthanum acetate dissolved in acetic acid (LAA) and lanthanum 2-methoxyethoxide in 2-methoxyethanol (LMM). The LMM-derived PLT15 films had lower dielectric constants (KLMM= 394, KLAA= 548, measured at 100
Nanostructured lanthanum cobaltite thinfilms have been grown on silica substrates by hybrid chemical vapor deposition/sol-gel approaches. The refractive index and the extinction coefficient of the specimens have been determined in the spectral range of 0.75–6.5 eV by spectroscopic ellipsometry. The conductivity of the films as a function of temperature has been also investigated, highlighting the
纳米结构的钴酸镧薄膜已通过混合化学气相沉积/溶胶-凝胶方法在二氧化硅基材上生长。样品的折射率和消光系数已通过光谱椭偏法在 0.75-6.5 eV 的光谱范围内确定。还研究了作为温度函数的薄膜的电导率,突出了 LaCoO3 纳米系统的不同电学行为作为所采用的合成策略的函数。
Solvothermal synthesis and characterisation of La1−xAxMnO3 nanoparticles
The synthesis of La(1-x)A(x)MnO(3) (A = Ca, Sr, Ba) nanoparticles in nonaqueous solvents has been studied. For this solvothermal procedure benzyl alcohol and acetophenone were chosen as reaction media. After this treatment in mild conditions a precipitate was obtained, which, however, can be annealed to the crystalline perovskite structure. Our results show that acetophenone is more suited to obtain the clean pervoskite phase than benzyl alcohol. (c) 2006 Elsevier Inc. All rights reserved.
Turova, N. Ya.; Turevskaya, E. P.; Kessler, V. G., Russian Journal of Inorganic Chemistry, 1992, vol. 37, p. 26 - 32
作者:Turova, N. Ya.、Turevskaya, E. P.、Kessler, V. G.、Kozlova, N. I.、Belokon, A. I.