Magnetic properties of cementite (Fe3C) nanoparticle agglomerates in a carbon matrix

• Autorzy: Lipert K. , Kaźmierczak J. , Pełech I. , Narkiewicz U. , Ślawska-Waniewska A. , Lachowicz H. K.
• Konferencja: Conference New Materials for Magnetoelectronics, Będlewo, 3-6 May 2006
• Języki publikacji: EN

Abstrakty

EN

Magnetic properties of two FeC samples with different amounts of carbon have been studied. In both cases, the amount of carbon was well above the mass sufficient to transform nanocrystalline iron into iron carbide (cementite). Through the dc magnetic and transmission electron microscopy (TEM) measurements it was shown that cementite nanoparticles formed agglomerates; the size distribution of these nanoparticles was very wide, and superparamagnetic-like behaviour was not observed even at room temperature.

Słowa kluczowe

EN

superparamagnetism; coercivity; iron carbide; Stoner-Wohlfarth model

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2007
• Tom: Vol. 25, No. 2
• Strony: 399--404
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Lipert K.

autor

Kaźmierczak J.

autor

Pełech I.

autor

Narkiewicz U.

autor

Ślawska-Waniewska A.

autor

Lachowicz H. K.

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Warsaw

Bibliografia

• [1] KITTEL C., Phys. Rev., 70 (1946), 965.
• [2] STONER E.C., WOHLFARTH E.P., IEEE Trans. Magn., 27 (1991), 3475.
• [3] NÉEL L., Compt Rend. (Paris), 228 (1949), 604.
• [4] ŚLAWSKA-WANIEWSKA A., GUTOWSKI M., LACHOWICZ H.K., KULIK T., MATYJA H., Phys. Rev. B, 46 (1992), 14594.
• [5] DIDUKH P., NEDELKO O., ŚLAWSKA-WANIEWSKA A., J. Magn. Magn. Mater., 242 (2002), 1077.
• [6] YOSHIDA J., KOBAYASHI T., J. Magn. Magn. Mater., 194 (1999), 176.
• [7] PANATAROTTO D., PRTIDOS C.D., HOEBEKE J., BROWN F., KRAMER E., BRIAND J.P., MULLER S., PRATO M., BIANCO A., Chem. Biol., 10 (2003), 961.
• [8] WEISSLEDER R., ELIZONDO G., WITTENBURG J., RABITO C.A., BENGELE H.H., JOSEPHSON L., Radiol., 175 (1990), 489.
• [9] NARKIEWICZ U., KUCHAREWICZ I., ARABCZYK W., LENART S., Mater. Sci.-Poland, 23 (2005), 939.
• [10] JIN LU LU, HONG YUAN DENG, HUEI LI HUAN, J. Magn. Magn. Mater., 209 (2000), 37.
• [11] CANDELA G.A., HAINES R.A., Appl. Phys. Lett., 34 (1979), 868.