Adjusting the Magnetic Properties of ZrO2:Mn Nanocrystals by Changing Hydrothermal Synthesis Conditions

The three-dimensional [Co3(OH)2(H2O)2(aptet)4] exhibits magnetic properties consistent with a ferrimagnetic chain with the non-compensating resultant moment of one Co(ii) per trinuclear Co(ii) subunit and ac magnetic susceptibility indicative of glassy-like magnetic behavior.

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Effect of synthesis conditions on the morphology, composition and magnetic properties of the Iron Oxide nanoparticles prepared via electric discharge method

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2021.168090 ◽

2021 ◽

pp. 168090

Author(s):

Fatemeh Shahbazi ◽

Mohammad Noghani ◽

Reza Ahmadi

Keyword(s):

Magnetic Properties ◽

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Electric Discharge ◽

Oxide Nanoparticles ◽

Synthesis Conditions ◽

Discharge Method ◽

Electric Discharge Method

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Ferroelectromagnetic Properties of PbFe1/2Nb1/2O3 (PFN) Material Synthesized by Chemical-Wet Technology

Materials ◽

10.3390/ma11122504 ◽

2018 ◽

Vol 11 (12) ◽

pp. 2504 ◽

Cited By ~ 1

Author(s):

Dariusz Bochenek ◽

Przemysław Niemiec

Keyword(s):

Magnetic Properties ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Sintering Temperature ◽

Closed Porosity ◽

X Ray ◽

Synthesis Conditions ◽

Ceramic Samples ◽

Sem Microstructure ◽

Scanning Electron

In this work, PbFe1/2Nb1/2O3 (PFN) ceramic samples synthesized by chemically wet method (precipitation from the solution) were obtained. Due to the tendency to form powder agglomerates, the synthesized powder was subjected to ultrasound. The sintering was carried out under various technological conditions, mainly through controlling the sintering temperature. -X-ray powder-diffraction (XRD), scanning electron microscope (SEM) microstructure analysis, as well as the examinations of dielectric, ferroelectric, and magnetic properties of the PFN ceramics were carried out. Studies have shown that hard ceramic agglomerates can be partially minimized by ultrasound. Due to this treatment, closed porosity decreases, and the ceramic samples have a higher density. Optimization and improvement of the technological process of the PFN material extends the possibility of its use for the preparation of multiferroic composites or multicomponent solid solutions based on PFN. Such materials with functional properties find applications in microelectronic applications, e.g., in systems integrating ferroelectric and magnetic properties in one device. The optimal synthesis conditions of PFN ceramics were determined to be 1050 °C/2 h.

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Preparation of Silicalite-1 Membranes with Seeding Method and its Separation Performance for Low Ethanol/Water Mixture

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.807-809.591 ◽

2013 ◽

Vol 807-809 ◽

pp. 591-595

Author(s):

Hong Liang Chen ◽

Ji Song Yang ◽

Yan Wang ◽

Hui Ying Li ◽

Xin Xin Li ◽

...

Keyword(s):

Hydrothermal Synthesis ◽

Separation Factor ◽

High Performance ◽

Separation Performance ◽

Water Mixture ◽

Synthesis Conditions ◽

Seeding Method

High performance silicalite-1 membranes were successfully synthesized on silica tubes by seeding method after filling the tubes with water and glycerol mixtures. After seeding the silica tubes with 200 nm seeds, all the silicalite-1 membranes show acceptable separation performance towards ethanol/water mixture after 4-12 h hydrothermal synthesis, and the highest flux of membrane with 8 h hydrothermal synthesis reaches about 0.98 kg/m2.h and the separation factor reaches about 60 towards 3 wt.% ethanol/water mixture. This result shows that the as-synthesized silicalite-1 membrane can concentrate the ethanol from 3% to about 65%, and the ethanol can be obtained over 600 g/m2.h by using the silicalite-1 membrane, which shows that seeding method and suitable control of synthesis conditions is possible for preparing high-performance silicalite-1 membranes.

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