Enhanced performance arising from low-temperature preparation of α-alumina membranes via titania doping assisted sol-gel method

Aluminum titanate (Al2TiO5) film was prepared via sol-gel method at low temperature, using ethyl acetoacetate and anhydrous citric acid as compound chelating agent, tetrabutyl titanate (Ti (OC4H9)4) and aluminum chloride (AlCl3.6H2O) as precursors, ethanol as solvent. The phase transformation of Al2TiO5 xerogel during heat treatment, the effect of different chelating agents on the synthesis of Al2TiO5, and the phase composition and morphology of film were investigated by means of differential thermal and thermo gravimetric analysis (DTA-TG), X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR) and field-emission scanning electron microscopy (FE-SEM). The results demonstrate that Al2TiO5 can be synthesized at 750 °C by using compound chelating agent, rather than single chelating agent. Compound chelating agent contributes to the formation of Al-O-Ti heterogeneous bond, which is the key to preparing Al2TiO5 at low temperature. High quality Al2TiO5 film could be coated on the SiC substract at 750°C.

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Multilevel resistive switching performance of TiO2-based flexible memory prepared by low-temperature sol-gel method with UV irradiation

Current Applied Physics ◽

10.1016/j.cap.2021.02.001 ◽

2021 ◽

Vol 24 ◽

pp. 32-38

Author(s):

Lilan Zou

Keyword(s):

Low Temperature ◽

Uv Irradiation ◽

Resistive Switching ◽

Sol Gel ◽

Gel Method ◽

Sol Gel Method ◽

Switching Performance

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Low temperature preparation of sol-gel PZT thin films for pyroelectric and other integrated devices

ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics ◽

10.1109/isaf.1996.602739 ◽

2002 ◽

Author(s):

J.C. Gunter ◽

S.K. Streiffer ◽

A.I. Kingon

Keyword(s):

Thin Films ◽

Low Temperature ◽

Sol Gel ◽

Pzt Thin Films ◽

Integrated Devices ◽

Low Temperature Preparation ◽

Temperature Preparation

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Synthesis of Aluminum Titanate Powder at Low Temperature via Nonhydrolytic Sol-Gel Method by Using Aluminum Powder

Materials Science Forum ◽

10.4028/www.scientific.net/msf.745-746.673 ◽

2013 ◽

Vol 745-746 ◽

pp. 673-678 ◽

Cited By ~ 1

Author(s):

Wei Hui Jiang ◽

Zhi Fang Xu ◽

Jian Min Liu ◽

Qing Xia Zhu ◽

Quan Zhang

Keyword(s):

Low Temperature ◽

Aluminum Powder ◽

Raw Materials ◽

Sol Gel ◽

Aluminum Titanate ◽

Gel Method ◽

Sol Gel Method ◽

Transmission Electron ◽

Oxygen Donor ◽

Metal Aluminum

Aluminum titanate (Al2TiO5) powder has been synthesized at low temperature via nonhydrolytic sol-gel method by using aluminum powder as aluminum source, titanium tetrachloride as titanium source, anhydrous ethanol as oxygen donor with different catalysts. The phase transformation of aluminum titanate xerogel powder during heat treatment and the influence of the mixing orders of raw materials, catalyst kinds on the synthesis of aluminum titanate were investigated by means of differential-thermal analysis (DTA-TG), X-ray diffraction (XRD), transmission electron microscope (TEM). The results indicated that aluminum titanate powder was easily synthesized at 750 °C by using AlCl3 as catalyst with a mixing order of adding TiCl4 before AlCl3 into aluminum alcohol mixture. The catalytic order of the different catalysts in the preparation process of aluminum titanate is: FeCl3> AlCl3> MgCl2. The catalyst promoted the activation of metal aluminum powder and played a major role in the synthesis of aluminum titanate powder at low temperature via nonhydrolytic sol-gel method.

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