Počet záznamů: 1
Synthesis of nano-crystalline NiFe2O4 powders in subcritical and supercritical ethanol
- 1.
SYSNO ASEP 0463861 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Synthesis of nano-crystalline NiFe2O4 powders in subcritical and supercritical ethanol Tvůrce(i) Ćosović, A. (RS)
Žák, Tomáš (UFM-A) RID
Glisić, S. (RS)
Sokić, M. (RS)
Lazarević, S. (RS)
Ćosović, V. (RS)
Orlović, A. (RS)Celkový počet autorů 7 Zdroj.dok. Journal of Supercritical Fluids. - : Elsevier - ISSN 0896-8446
Roč. 113, JUL (2016), s. 96-105Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova supercritical ; subcritical ; nano-crystalline powders ; nickel ferrite ; metal oxide ; magnetic properties Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEP ED1.1.00/02.0068 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFM-A - RVO:68081723 UT WOS 000375500000014 EID SCOPUS 84961926591 DOI 10.1016/j.supflu.2016.03.014 Anotace Nano-crystalline nickel ferrite has a broad range of applications due to its favourable magnetic properties. Those characteristics can be significantly influenced by the synthesis pathway including methods conducted in the presence of supercritical alcohols. Nano-crystalline NiFe2O4 powders were obtained in the reaction under subcritical and supercritical conditions of ethanol. Both high pressure synthesis routes resulted in powders with smaller primary particles and higher mesoporosity than co-precipitation method. Upon the annealing treatment the average crystallite size increased while material structure remained uniform, resulting in significantly enhanced magnetic properties, such as coercivity and remanence. It was found that synthesis under supercritical conditions provides higher conversion but also material with larger average crystallite size upon annealing. The time and temperature of annealing stage significantly influenced the morphology and magnetic properties of the obtained powders. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2017
Počet záznamů: 1