Structural and Magnetic Properties of CoFe2-xGdxO4 (x = 0.0-0.1) Spinel Ferrite Nanoparticles synthesized by Starch-Assisted Sol-Gel Auto-combustion Method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F15%3APU113433" target="_blank" >RIV/00216305:26310/15:PU113433 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10948-015-2951-7" target="_blank" >http://dx.doi.org/10.1007/s10948-015-2951-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10948-015-2951-7" target="_blank" >10.1007/s10948-015-2951-7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structural and Magnetic Properties of CoFe2-xGdxO4 (x = 0.0-0.1) Spinel Ferrite Nanoparticles synthesized by Starch-Assisted Sol-Gel Auto-combustion Method

Popis výsledku v původním jazyce

In this present article, CoFe2-xGdxO4 (x = 0.0-0.1) nanoparticles were synthesized by starch-assisted sol–gel auto-combustion method. Powder X-ray diffraction patterns revealed the formation of cubic spinel ferrite with the signature of GdFeO3 phase at higher Gd3+ concentration. The field emission scanning electron microscopy study demonstrated the spherical nanoparticle in the size range 4–10 nm. Raman and Fourier transform infrared spectra supported the formation of the spinel ferrite structure in the nanocrystalline form. The X-ray photoelectron spectroscopy (XPS) analysis confirmed the presence of Co2+ and Fe3+ at the octahedral site as well as the tetrahedral site in CoFe2-xGdxO4 (x = 0.05) nanoparticles. The distribution of Fe3+ ions was obtained to be about 73 % in the octahedral sites and about 27 % in the tetrahedral sites. The distribution of Co2+ ions at the octahedral and tetrahedral sites were 78 and 22 %, respectively. The increase in saturation magnetization and coercivity from 14.59 emu/g (x = 0.00) to 16.11 emu/g (x = 0.025) and 51.75 Oe (x = 0.00) to 92.86 Oe (x = 0.050), respectively, in CoFe2-xGdxO4 nanoparticles were observed.

Název v anglickém jazyce

Structural and Magnetic Properties of CoFe2-xGdxO4 (x = 0.0-0.1) Spinel Ferrite Nanoparticles synthesized by Starch-Assisted Sol-Gel Auto-combustion Method

Popis výsledku anglicky

In this present article, CoFe2-xGdxO4 (x = 0.0-0.1) nanoparticles were synthesized by starch-assisted sol–gel auto-combustion method. Powder X-ray diffraction patterns revealed the formation of cubic spinel ferrite with the signature of GdFeO3 phase at higher Gd3+ concentration. The field emission scanning electron microscopy study demonstrated the spherical nanoparticle in the size range 4–10 nm. Raman and Fourier transform infrared spectra supported the formation of the spinel ferrite structure in the nanocrystalline form. The X-ray photoelectron spectroscopy (XPS) analysis confirmed the presence of Co2+ and Fe3+ at the octahedral site as well as the tetrahedral site in CoFe2-xGdxO4 (x = 0.05) nanoparticles. The distribution of Fe3+ ions was obtained to be about 73 % in the octahedral sites and about 27 % in the tetrahedral sites. The distribution of Co2+ ions at the octahedral and tetrahedral sites were 78 and 22 %, respectively. The increase in saturation magnetization and coercivity from 14.59 emu/g (x = 0.00) to 16.11 emu/g (x = 0.025) and 51.75 Oe (x = 0.00) to 92.86 Oe (x = 0.050), respectively, in CoFe2-xGdxO4 nanoparticles were observed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/EE2.3.30.0005" target="_blank" >EE2.3.30.0005: Podpora tvorby excelentních týmů mezioborového výzkumu na VUT</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Superconductivity and Novel Magnetism

ISSN

1557-1939

e-ISSN

1557-1947

Svazek periodika

2015

Číslo periodika v rámci svazku

28

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

1797-1806

Kód UT WoS článku

000353828900022

EID výsledku v databázi Scopus

2-s2.0-84939981558