Počet záznamů: 1
Synthesis of Magnetic Ultrafine Particles from a Ternary Gaseous Mixture Involving Cobalt Tricarbonyl Nitrosyl
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SYSNO ASEP 0440069 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Synthesis of Magnetic Ultrafine Particles from a Ternary Gaseous Mixture Involving Cobalt Tricarbonyl Nitrosyl Tvůrce(i) Morita, H. (JP)
Sakano, H. (JP)
Murafa, Nataliya (UACH-T) ORCID, RID, SAI
Šubrt, Jan (UACH-T) SAI, RIDZdroj.dok. Journal of Photopolymer Science and Technology - ISSN 0914-9244
Roč. 27, č. 46 (2014), s. 477-483Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. JP - Japonsko Klíč. slova gas phase photochemical reaction ; magnetic ultrafine particle ; cobalt tricarbonyl nitrosyl ; tetraethylgermane ; propenyltrimethylsilane Vědní obor RIV CA - Anorganická chemie Institucionální podpora UACH-T - RVO:61388980 UT WOS 000340229800013 EID SCOPUS 84907556322 DOI https://doi.org/10.2494/photopolymer.27.477 Anotace From a ternary gaseous mixture of cobalt tricarbonyl nitrosyl (Co(CO)(3)NO), tetraethylgermane (TEG), and propenyltrimethylsilane (allyltrimethylsilane) (ATMeSi), magnetic ultrafine particles were produced under irradiation with intense Nd:YAG laser light. From FT-IR spectra, chemical structure of the ultrafine particles was investigated. The spectrum of the magnetic particles was essentially the same to the one of the ultrafine particles produced from a binary gaseous mixture of Co(CO)(3)NO and ATMeSi, suggesting strongly that TEG molecules did not contribute significantly to particle formation process. On the other hand, in the gaseous phase, depletion rate of TEG molecules was accelerated by 800 times due to the presence of Co(CO)(3)NO molecules, showing that TEG molecules interacted efficiently with Co(CO)(3)NO molecules to produce some volatile chemical species in the gas phase under laser light irradiation. Magnetization of the ultrafine particles was measured using a SQUID magnetometer. Magnetic susceptibility of the ultrafine particles was evaluated to be similar to 1 x 10(-2) emu/g, suggesting that the deposited ultrafine particles were mainly composed of ferromagnetic species. The morphology of the coagulated particles was studied by taking HRTEM images. The ultrafine particles were composed of several kinds of particles which involved both the polycrystalline phase and amorphous phase. Crystalline phase was mainly composed of Co atoms, and may be responsible for ferromagnetic properties of the particles. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2015
Počet záznamů: 1