TY - JOUR
T1 - Nd2Fe14B/Fe3B nanocomposite film fabricated by aerosol deposition method
AU - Sugimoto, S.
AU - Nakamura, M.
AU - Maki, T.
AU - Kagotani, T.
AU - Inomata, K.
AU - Akedo, J.
AU - Hirosawa, S.
AU - Shigemoto, Y.
N1 - Funding Information:
This work was supported in part by NEDO Project of Nano Structure Forming for Ceramics Integration Project in Nano Technology Program in Japan and a Grant-in-Aid for Scientific Research (Nos. 15360378 and 16656213) from the Ministry of Education, Science, Sports and Culture of Japan.
PY - 2006/2/9
Y1 - 2006/2/9
N2 - This paper describes magnetic properties of the Fe3B/Nd 2Fe14B nanocomposite films prepared by aerosol deposition (AD) method. The composition of host powder was Nd4.5Fe 73Co2Cr2B18.5, which was produced by the combination of strip casting and jet milling. The powder showed the remanence (Br) of 82.7 emu/g and the coercivity (HcJ) of 4.4 kOe. From the hysteresis loop and XRD pattern, the powder was considered as a nanocomposite powder consisted of Fe3B and Nd2Fe 14B phases. The particle size analysis revealed that the average powder size was around 12.45 μm. This powder size was larger than that of Sm-Fe-N powder used for the preparation of AD films in our previous papers, which influenced the deposition rate and film thickness. The as-deposited AD film exhibited high remanence (Br = 85.1 emu/g) but low coercivity (HcJ = 0.84 kOe), though the film consisted of the Fe3B and Nd2Fe14B phases. In addition, the coercivity further decreased to 0.28-0.73 kOe by the annealing at 450-700 °C for 1-6 min in Ar. These low coercivities were considered to be related to the relatively low anisotropy field of Nd2Fe14B phase, the defects induced during the AD method and the presence of α-Fe phase.
AB - This paper describes magnetic properties of the Fe3B/Nd 2Fe14B nanocomposite films prepared by aerosol deposition (AD) method. The composition of host powder was Nd4.5Fe 73Co2Cr2B18.5, which was produced by the combination of strip casting and jet milling. The powder showed the remanence (Br) of 82.7 emu/g and the coercivity (HcJ) of 4.4 kOe. From the hysteresis loop and XRD pattern, the powder was considered as a nanocomposite powder consisted of Fe3B and Nd2Fe 14B phases. The particle size analysis revealed that the average powder size was around 12.45 μm. This powder size was larger than that of Sm-Fe-N powder used for the preparation of AD films in our previous papers, which influenced the deposition rate and film thickness. The as-deposited AD film exhibited high remanence (Br = 85.1 emu/g) but low coercivity (HcJ = 0.84 kOe), though the film consisted of the Fe3B and Nd2Fe14B phases. In addition, the coercivity further decreased to 0.28-0.73 kOe by the annealing at 450-700 °C for 1-6 min in Ar. These low coercivities were considered to be related to the relatively low anisotropy field of Nd2Fe14B phase, the defects induced during the AD method and the presence of α-Fe phase.
KW - Aerosol deposition
KW - Coercivity
KW - Iron-boron
KW - Nanocomposite
KW - Neodymium-iron-boron
KW - Remanence
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U2 - 10.1016/j.jallcom.2005.04.044
DO - 10.1016/j.jallcom.2005.04.044
M3 - Conference article
AN - SCOPUS:31344454090
VL - 408-412
SP - 1413
EP - 1416
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
T2 - Proceedings of the Rare Earths'04 in Nara, Japan
Y2 - 7 November 2004 through 12 November 2004
ER -