Effect of temperature on the dielectric and ferroelectric properties of a nanocrystalline hexagonal Ba4YMn3O11.5−δ ceramic synthesized by a chemical route

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 68247-68253 ◽  
Author(s):  
Shiva Sundar Yadava ◽  
Laxman Singh ◽  
Sunita Sharma ◽  
K. D. Mandal ◽  
Narsing B. Singh

A Ba4YMn3O11.5−δ (BYMO) nano-crystalline powder was prepared by a novel wet chemical method using metal nitrates and glycine as starting materials.

2018 ◽  
Vol 6 (3) ◽  
Author(s):  
Adnan Meship Mahdi

In this search nano silica powder was prepared by the bond fracturing of silica – oxygen using wet chemical method at PH 1-2  and by eliminate all undesired oxides by using ultrasound bath , and separating the compound by centrifuge ,and washing the product with distilled water ,and by separating and calcining the product at different temperatures it Weill is trail product with particle size ( 40-50) nm ,then  XRD and AFM was to evaluate the product


Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1621 ◽  
Author(s):  
Tao Zhang ◽  
Jun Ou-Yang ◽  
Xiaofei Yang ◽  
Benpeng Zhu

Approximately 25 μm Pb(Mg1/3Nb2/3)O3–PbTiO3 (PMN-PT) thick film was synthesized based on a sol-gel/composite route. The obtained PMN-PT thick film was successfully transferred from the Silicon substrate to the conductive silver epoxy using a novel wet chemical method. The mechanism of this damage free transfer was explored and analyzed. Compared with the film on Silicon substrate, the transferred one exhibited superior dielectric, ferroelectric and piezoelectric properties. These promising results indicate that transferred PMN-PT thick film possesses the capability for piezoelectric device application, especially for ultrasound transducer fabrication. Most importantly, this chemical route opens a new path for transfer of thick film.


2020 ◽  
Vol 4 (3) ◽  
pp. 875-880
Author(s):  
D. Li ◽  
J. H. Zhang ◽  
J. M. Li ◽  
J. Zhang ◽  
X. Y. Qin

Herein, a facile solution chemical route has been developed for synthesis of Ag2Se-based alloy nanocrystals and high thermoelectric figure of merit has been obtained.


2007 ◽  
Vol 361-363 ◽  
pp. 47-50 ◽  
Author(s):  
Satoshi Hayakawa ◽  
Akiyoshi Osaka ◽  
Kanji Tsuru ◽  
Eiji Fujii ◽  
Kouji Kawabata ◽  
...  

Nano-crystalline Mg-containing hydroxyapatite (Mg·HAp) were prepared by a wet chemical method, for which selective adsorption of proteins was examined, taking bovine serum albumin (BSA) and a pathogenic protein β2-microglobulin (β2-MG) as the model proteins. Increase in the Mg content led to smaller crystallites and larger specific surface area (SA) of Mg·HAps as well as zeta potential, while the amount both of BSA and β2-MG adsorption on Mg·HAp particles. It is thus concluded that the adsorption of BSA and β2-MG on Mg•HAp was associated with surface charges.


Ionics ◽  
2021 ◽  
Vol 27 (4) ◽  
pp. 1465-1475
Author(s):  
Ning Zhang ◽  
Ying Li ◽  
Yadan Luo ◽  
Zhen Yang ◽  
Jiayao Lu

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 55546-55551 ◽  
Author(s):  
Shu-Qing Lv ◽  
Ya-Fei Pan ◽  
Pei-Bo Yang ◽  
Guang-Sheng Wang

By using a simple wet chemical method and hot-molding procedure, a kind of flexible film with enhance absorption properties based on binary cobalt nanochains/polyvinylidene fluoride (PVDF) hybrids has been successfully fabricated.


2010 ◽  
Vol 500 (2) ◽  
pp. L17-L21 ◽  
Author(s):  
Shao-Hwa Hu ◽  
Yi-Chuan Chen ◽  
Chyi-Ching Hwang ◽  
Cheng-Hsiung Peng ◽  
Dah-Chuan Gong

2017 ◽  
Vol 8 ◽  
pp. 1257-1265 ◽  
Author(s):  
Urszula Klekotka ◽  
Magdalena Rogowska ◽  
Dariusz Satuła ◽  
Beata Kalska-Szostko

Ferrite nanoparticles with nominal composition Me0.5Fe2.5O4 (Me = Co, Fe, Ni or Mn) have been successfully prepared by the wet chemical method. The obtained particles have a mean diameter of 11–16 ± 2 nm and were modified to improve their magnetic properties and chemical activity. The surface of the pristine nanoparticles was functionalized afterwards with –COOH and –NH2 groups to obtain a bioactive layer. To achieve our goal, two different modification approaches were realized. In the first one, glutaraldehyde was attached to the nanoparticles as a linker. In the second one, direct bonding of such nanoparticles with a bioparticle was studied. In subsequent steps, the nanoparticles were immobilized with enzymes such as albumin, glucose oxidase, lipase and trypsin as a test bioparticles. The characterization of the nanoparticles was acheived by transmission electron microscopy, X-ray diffraction, energy dispersive X-ray and Mössbauer spectroscopy. The effect of the obtained biocomposites was monitored by Fourier transform infrared spectroscopy. The obtained results show that in some cases the use of glutaraldehyde was crucial (albumin).


2003 ◽  
Vol 265 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Madhuri Mandal ◽  
Subrata Kundu ◽  
Sujit Kumar Ghosh ◽  
Tapan K. Sau ◽  
S.M. Yusuf ◽  
...  

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