0484459 - ÚFM 2018 RIV PL eng J - Článek v odborném periodiku
Žák, Tomáš - David, Bohumil - Ćosović, A. - Ćosović, V. - Živković, D. - Talijan, N.
Structure and Magnetic Properties of Nanocrystalline NiFe2O4 Prepared via Precipitation Route.
Acta Physica Polonica A. Roč. 126, č. 1 (2014), s. 142-143. ISSN 0587-4246. E-ISSN 1898-794X.
[CSMAG 2014 - Czech and Slovak Conference on Magnetism /15./. Košice, 17.07.2013-21.07.2013]
Grant CEP: GA MŠMT(CZ) ED1.1.00/02.0068
Institucionální podpora: RVO:68081723
Klíčová slova: NICKEL FERRITE * PARTICLES
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 0.530, rok: 2014 ; AIS: 0.118, rok: 2014

Nanocrystalline Ni-ferrite was synthesized by modified precipitation method in which soluble starch is used as dispersing agent and Na2CO3 as a precipitating agent. NiSO4 center dot 6H(2)O and Fe(NO3)(3)center dot 9H(2)O were used as precursors for nickel and ferric oxide, respectively. The obtained nanocrystalline Ni-ferrite was analysed and discussed through structural, compositional and magnetic characterization. Formation of pure NiFe2O4 phase with average crystallite size of 21 nm has been confirmed by X-ray diffraction analysis (XRD). The determined phase composition was additionally supported by results of Fe-57 Mossbauer phase (MS) analysis and material's nanocrystalline structure by field emission scanning electron microscopy (FE-SEM). Thermomagnetic behaviour was studied up to 800 degrees C. The obtained room temperature magnetic hysteresis loop, recorded by means of a vibrating sample magnetometer (VSM), exhibits characteristic 'S' shape of the soft magnetic material with the measured coercivity of about 10 kA/m and the specific moment up to 40 Am-2/kg.
Trvalý link: http://hdl.handle.net/11104/0279656