scholarly journals Detail Synthesis Route of Free-Standing Antiferromagnetic La2CuO4 Nanoparticles via Sol-gel Method

2021 ◽  
Vol 1 (1) ◽  
pp. 18-21
Author(s):  
Suci Winarsih ◽  
Trisna Maulana ◽  
Budhy Kurniawan
Keyword(s):  
Single Phase ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Free Standing ◽  
Single Phase Sample ◽  
Gel Method ◽  
Sol Gel Method ◽  
Synthesis Route ◽  
Sintering Time ◽  
Heating Treatment

We report the detailed synthesis route of free-standing antiferromagnetic La2CuO4 nanoparticles by the sol-gel method. The precursors were needed to be dissolved in acid solution and continued with heating treatment to make a gel. Some catalyst was needed to control and stabilized the transformation from the solution to gel. Some heating treatments were also conducted to remove the organic component and for the nucleation process to obtain the single-phase sample. Although the sol-gel method required some additional precursors such as acid and catalyst, it has some advantages. It needed a relatively low sintering temperature and short sintering time compare to those at the solid-state reaction. Interestingly, this method can produce a sample with a good distribution of the particle size.

Effect of Sintering in Nanosized SrMnO3 Perovskite by Sol-Gel Method

2020 ◽  
Vol 855 ◽  
pp. 84-88
Author(s):  
Djati Handoko ◽  
Qoimatul Mustaghfiroh ◽  
Dicky Rezky Munazat ◽  
Dhawud Sabilur Razaq ◽  
Budhy Kurniawan ◽  
...  
Keyword(s):  
Single Phase ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Nanosized Particles ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Higher Temperature ◽  
Lower Temperature ◽  
And Behavior

Nanosized particles SrMnO3 perovskite was prepared by using sol gel method. The sintering temperature was modified to 700, 1000 and 1200 °C within 6 hours. The effect of sintering in nanosized particles and structural were carefully investigated by using X-Ray Diffractometer (XRD) and Scanning Electron Microscopy (SEM). All the synthesized particles show orthorhombic structure with progression from amorphous phase on lower temperature to single phase on higher temperature of sintering. The crystallite size tends to be constant while the particle size is adjusted. The SrMnO3 grain size also modified to larger as the sintering temperature increase indicating that structure and behavior of the particles could be improved by modified sintering temperature.

KNN-BF Lead-Free Piezoelectric Ceramics Synthesized by Sol-Gel Method

2015 ◽  
Vol 740 ◽  
pp. 3-6
Author(s):  
Guo Yuan Cheng ◽  
Xing Hua Fu ◽  
Xin Jin ◽  
Wen Hong Tao ◽  
Yu Qin Qiang
Keyword(s):  
Comparative Analysis ◽  
Citric Acid ◽  
Dielectric Loss ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Gel Method ◽  
Sol Gel Method ◽  
Metal Chelator

KNN-BF piezoelectric ceramics synthesized by sol-gel method in this experiment. By controlling bismuth and iron content in the system to study effects of them. We selected citric acid as metal chelator and ethylene glycol as esterification agent. PH maintained 5-6 during preparation of the sol. Sintering temperature of ceramic selected 1100°C. Preparation ceramics under these conditions and comparative analysis, the structure of ceramics is single perovskite and shap of crystals are square block. With the increase of x, properties of ceramics firstly increases and then decreases: d33, εr, Qm, Kpreaching the maximum, values of them were 136pC/N, 630(f =1KHz), 212, 0.41 respectively; dielectric loss to minimum is 0.07(f =1KHz); at this point, ceramics had best performance.

Impedance Spectroscopy Study of LiTaO3 Powder Synthesized via Sol-Gel Method

2012 ◽  
Vol 545 ◽  
pp. 275-278 ◽  
Author(s):  
Lili Widarti Zainuddin ◽  
Norlida Kamarulzaman
Keyword(s):  
Room Temperature ◽  
Single Phase ◽  
Sol Gel ◽  
Rhombohedral Structure ◽  
Spectroscopy Study ◽  
X Ray Diffraction ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Impedance Spectroscopy Study

A ceramics sample of LiTaO3 was prepared using a sol-gel method. The sample is annealed at 750 °C for 48 hours. X-ray diffraction analysis indicate the formation of single phase, rhombohedral structure. An ac impedance study was used to analyse the conductivity of LiTaO3 at room temperature and at various temperatures.

Microstructure and Properties of Fe/Al2O3 Gradient Coatings on Steel Substrate

2010 ◽  
Vol 150-151 ◽  
pp. 1325-1329
Author(s):  
Jian Fei Liu ◽  
Zhi Wang ◽  
Yin Sen Ding ◽  
Guo Pu Shi
Keyword(s):  
Adhesion Strength ◽  
Sintering Temperature ◽  
Steel Substrate ◽  
Sol Gel ◽  
Surface Hardness ◽  
Gel Method ◽  
Sol Gel Method ◽  
Chemical Combination ◽  
Gradient Coatings ◽  
Α Al2o3

The composites of Fe/Al2O3 gradient coatings on steel substrate were prepared by spraying and sol-gel method, and the microstructure and performances of the composites were analyzed. The results show that the adhesion strength of Fe/Al2O3 gradient coatings with FeAlNi transitional layers reaches 25.3MPa when the sintering temperature is 1220°C, and the surface hardness of coatings is four times higher than that of steel substrate. The coatings are mainly composed of α-Al2O3, AlFeO3 and NiFe2O4. There is no obvious hole or macro-interface, while some organization similar to the branch appears in the coatings. The bonding of Fe/Al2O3 gradient coatings and steel substrate mainly depends on adsorption, diffusion and chemical combination.

Effect of sintering temperature on structural, magnetic, magnetocaloric and critical behaviors of Ni-Cd-Zn ferrites prepared using sol-gel method

2018 ◽  
Vol 464 ◽  
pp. 91-102 ◽  
Author(s):  
Sobhi Hcini ◽  
Noura Kouki ◽  
Aref Omri ◽  
Abdessalem Dhahri ◽  
Mohamed Lamjed Bouazizi
Keyword(s):  
Sintering Temperature ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

MgMoO4 as an anode material for lithium ion batteries and its multi-electron reaction mechanism

2022 ◽  
Author(s):  
He Duan ◽  
Zhiyong Zhou ◽  
Yanming Zhao ◽  
Youzhong Dong
Keyword(s):  
Reaction Mechanism ◽  
Synergistic Effect ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Single Phase ◽  
Sol Gel ◽  
Lithium Ion ◽  
Gel Method ◽  
Sol Gel Method ◽  
Magnesium Molybdate

Single-phase magnesium molybdate, MgMoO4, is successfully synthesized by a facile sol-gel method. Attributed to the multielectron reaction and the synergistic effect of the elements molybdenum (Mo) and magnesium (Mg), the...

Low-temperature processing and characterization of single-phase PZT powders by sol-gel method

2007 ◽  
Vol 42 (23) ◽  
pp. 9801-9806 ◽  
Author(s):  
Radhouane Bel Hadj Tahar ◽  
Noureddine Bel Hadj Tahar ◽  
Abdelhamid Ben Salah
Keyword(s):  
Low Temperature ◽  
Single Phase ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Low Temperature Processing

The structure and magnetic properties of pure single phase BiFeO3 nanoparticles by microwave-assisted sol-gel method

2018 ◽  
Vol 735 ◽  
pp. 945-949 ◽  
Author(s):  
Shuai Zheng ◽  
Jiangying Wang ◽  
Jingji Zhang ◽  
Hongliang Ge ◽  
Zhi Chen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Phase ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Microwave Assisted ◽  
Bifeo3 Nanoparticles

Preparation of TiO2 Thin Films by Sol-Gel Method and Analysis of its Transmittance Based on Computer Image Processing

2020 ◽  
Vol 842 ◽  
pp. 121-126
Author(s):  
Ji Hui Luo ◽  
Qiu Yue Wen ◽  
Shu Liu ◽  
Ting Liu ◽  
Su Ting Wei ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Sintering Temperature ◽  
Raw Materials ◽  
Sol Gel ◽  
Light Transmittance ◽  
Anatase Structure ◽  
Gel Method ◽  
Sol Gel Method ◽  
Computer Image Processing ◽  
Imagej Software

TiO2 films were prepared by sol-gel method with butyl titanate, anhydrous ethanol, acetyl acetone and hydrochloric acid as raw materials, which were sintered at 380 °C and 530 °C respectively to obtain TiO2 films. XRD was used for analyzing the crystal structure of TiO2 film, and ImageJ software was used to detect the light transmittance of TiO2 film samples. The results show that the film sintered at 530 °C is brookite structure and the film sintered at 380 °C is anatase structure. The increase of sintering temperature is not conducive to the growth of TiO2 film grains. TiO2 films sintered at 380 °C have good light transmittance.

Sign in / Sign up

Export Citation Format

Share Document