Thermal Decomposition of Metal Acetylacetonates: Mass Spectrometer Studies

Hoene, Joan Von; Charles, Robert G.; Hickam, W. M.

doi:10.1021/j150567a019

Cited by 180 publications

(110 citation statements)

References 0 publications

Supporting

Mentioning

101

Contrasting

Unclassified

Order By: Relevance

“…The heat stability of Cr(acac) 3 is known to be greater than Cu(acac) 2 and this may explain the higher temperatures required. 31 These films show no XRD reflexes but the Cr 2 O 3 vibrational modes were confirmed by Raman spectroscopy, see Fig. 2(b).…”

Section: • )mentioning

confidence: 88%

Synthesis of nanocrystalline Cu deficient CuCrO₂ – a high figure of merit p-type transparent semiconductor

et al. 2016

View full text Add to dashboard Cite

The delafossite structured CuCrO 2 system is well known as one of the best performing p-type transparent conducting oxides. In this paper the details of a low temperature facile growth method for CuCrO 2 is described. The dependence of the growth on the precursors, the temperature and oxygen partial pressure are examined. The decomposition routes are critical to obtain the best performing films. The thermopower and electrical measurements indicate p-type films with conductivity ranging from 1-12 Scm −1 depending on the growth conditions. This p-type conductivity is retained despite the nanocrystallinity of the films. The figure of merit of these films can be as high as 350 µS, which is the best performing p-type TCO by solution methods to date. The optical properties are also investigated using ellipsometry and UV-Vis spectroscopy.

show abstract

Section: • )mentioning

confidence: 88%

Synthesis of nanocrystalline Cu deficient CuCrO₂ – a high figure of merit p-type transparent semiconductor

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Термически неустойчивый ацетилацетонат железа (III) начинает разлагаться при температурах около 100−105 • C с образованием двуоки-си углерода и ацетона [27]. Для стабилизации МНЧ в растворе использовалась олеиновая кислота (ОК) и оле-иламин (OА); а также аналогичные длинноцепочечные карбоновые кислоты и первичные амины.…”

Section: экспериментальные методикиunclassified

Мессбауэровские исследования наночастиц FeO/Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=- типа ядро/оболочка

Камзин¹,

Валиуллин²,

Khurshid

et al. 2018

Физика Твердого Тела

View full text Add to dashboard Cite

“…Based on thermal stability studies of the precursors, the preferential incorporation of iron may be attributed to the lower thermal stability of Fe(acac) 3 than Ni(acac) 2 . [32][33][34] The effect of high oxygen flow rate, double of what is needed for growth of smooth and stoichiometric films (Table 2), is studied in the second control experiment. As shown in Figure 2b), a relatively smooth and dense film is obtained.…”

Section: Full Papermentioning

confidence: 99%

“…Earlier mass spectrometry studies have shown that the thermal decomposition of Ni(acac) 2 results in the formation of methane, in addition to acetone and carbon dioxide formed with Fe(acac) 3 . [32] In the presence of oxygen, the preferential consumption of methane can drive the reaction equilibrium towards thermal decomposition and thus increase the rate of Ni incorporation into the film. Moreover, enhanced surface reaction kinetics in the presence of oxygen can alter the film growth mode to a mass transferlimited process where the incorporation rates of Ni and Fe are actually dependent on their diffusion rates through the gas-phase boundary layer above the surface, as discussed later.…”

Section: Full Papermentioning

confidence: 99%

Growth of Atomically Smooth Epitaxial Nickel Ferrite Films by Direct Liquid Injection CVD

Li¹,

Wang²,

Iliev³

et al. 2011

Chemical Vapor Deposition

View full text Add to dashboard Cite

Magnetoelectric heterostructures are being actively investigated for utilization in next generation microwave devices such as tunable filters and phase shifters. For efficient microwave absorption and magnetoelectric coupling, relatively thick (>1 mm) epitaxial spinel ferrite films with smooth topographies are required for the magnetic/ferroelectric heterostructures. Towards this goal, direct liquid injection (DLI)-CVD has been utilized for epitaxial growth of nickel ferrite (NiFe 2 O 4 ) films on MgAl 2 O 4 (100) and MgO (100) substrates with high deposition rates. Anhydrous Ni(acac) 2 and Fe(acac) 3 (acac ¼ acetylacetonate) are used as precursor sources dissolved in N,N-dimethyl formamide for the DLI vaporizer system. The influence of deposition temperature on the film properties has been investigated using optimized process conditions for flow of the injected precursors and oxygen. Epitaxial nickel ferrite films of stoichiometric composition are obtained in the temperature range 500-800 8C on both substrates with growth rates in the range 0.6-1.1 mm h À1. Because of changes in the surface diffusion behavior, the film morphology is found to be dependent on the deposition temperature with atomically smooth films being obtained for deposition in the temperature range 600-700 8C. Magnetic measurements reveal an increase in the saturation magnetization for the films with increasing growth temperature, which correlates well with the trend for improved epitaxial growth as indicated by X-ray and Raman spectroscopy measurements. Nickel ferrite films deposited on MgAl 2 O 4 (100) at 800 8C exhibit saturation magnetization very close to the bulk value of 300 emu cm À3.

show abstract

Thermal Decomposition of Metal Acetylacetonates: Mass Spectrometer Studies

Cited by 180 publications

References 0 publications

Synthesis of nanocrystalline Cu deficient CuCrO₂ – a high figure of merit p-type transparent semiconductor

Synthesis of nanocrystalline Cu deficient CuCrO₂ – a high figure of merit p-type transparent semiconductor

Мессбауэровские исследования наночастиц FeO/Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=- типа ядро/оболочка

Growth of Atomically Smooth Epitaxial Nickel Ferrite Films by Direct Liquid Injection CVD

Contact Info

Product

Resources

About

Thermal Decomposition of Metal Acetylacetonates: Mass Spectrometer Studies

Cited by 180 publications

References 0 publications

Synthesis of nanocrystalline Cu deficient CuCrO2 – a high figure of merit p-type transparent semiconductor

Synthesis of nanocrystalline Cu deficient CuCrO2 – a high figure of merit p-type transparent semiconductor

Мессбауэровские исследования наночастиц FeO/Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=- типа ядро/оболочка

Growth of Atomically Smooth Epitaxial Nickel Ferrite Films by Direct Liquid Injection CVD

Contact Info

Product

Resources

About

Synthesis of nanocrystalline Cu deficient CuCrO₂ – a high figure of merit p-type transparent semiconductor

Synthesis of nanocrystalline Cu deficient CuCrO₂ – a high figure of merit p-type transparent semiconductor