Properties of FeCo nanopowder prepared by chemical synthesis

0354467 - ÚFM 2011 RIV SK eng J - Článek v odborném periodiku
Zábranský, Karel - Schneeweiss, Oldřich
Properties of FeCo nanopowder prepared by chemical synthesis.
Journal of Electrical Engineering - Elektrotechnický časopis. Roč. 61, č. 5 (2010), s. 299-301. ISSN 1335-3632. E-ISSN 1339-309X.
[NANOVED 2010. Bratislava, 16.05.2010-19.05.2010]
Grant CEP: GA MŠMT 1M0512; GA ČR GA106/08/1440
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: FeCo alloys * nanoparticles * magnetic properties
Kód oboru RIV: JG - Hutnictví, kovové materiály
Impakt faktor: 0.270, rok: 2010

Chemical synthesis of binary Fe-Co oxalate was used for preparation of Fe-Co nanoparticles. X-ray difftaction spectra recorded during temperature treatment in reduction atmosphere show two main stages of transformation: amorphization of the oxalate mixture and formation of Fe-Co nanoparticles. After X-ray diffraction high temperature treatment the nanoparticles with 50 nm mean crystallite were found. Comparison of magnetic properties during and after different type of temperature treatment shows that coercivity and saturation magnetic polarization are sensitive in dependence on sample condition, length of treatment and temperature. Analysis of M¨ossbauer spectra reveal several components which were ascribed different phases during temperature treatments.
Trvalý link: http://hdl.handle.net/11104/0193463