TY - JOUR
T1 - Magnetic properties of Nd-Fe-B-M (M=Si, C) bulk nanocomposite magnets prepared by the spark plasma sintering method
AU - Fukuzaki, Tomokazu
AU - Tanaka, Keisuke
AU - Nishimoto, Kazue
AU - Muro, Yuji
AU - Nishio, Keishi
AU - Tamura, Ryuji
PY - 2008
Y1 - 2008
N2 - We have prepared Nd2Fe14B/Fe3B bulk nanocomposite magnets at the compositions Nd4Fe77.5B 18.5-xMx (M=Si, C) by substituting other elements M for B. For the sample substituted with 1 at.%Si, the coercivity exhibits the highest value of 227 kA/m when sintered at 600 °C. In addition, the grain sizes of the Nd2Fe14B and the Fe3B phases are found to depend on the ramp-up time during sintering and the reduction of the grain size leads to an increase of the coercivity. On the other hand, the samples substituted with C exhibit soft magnetic behaviors, which is attributed to the suppression of the Nd2Fe14B hard phase.
AB - We have prepared Nd2Fe14B/Fe3B bulk nanocomposite magnets at the compositions Nd4Fe77.5B 18.5-xMx (M=Si, C) by substituting other elements M for B. For the sample substituted with 1 at.%Si, the coercivity exhibits the highest value of 227 kA/m when sintered at 600 °C. In addition, the grain sizes of the Nd2Fe14B and the Fe3B phases are found to depend on the ramp-up time during sintering and the reduction of the grain size leads to an increase of the coercivity. On the other hand, the samples substituted with C exhibit soft magnetic behaviors, which is attributed to the suppression of the Nd2Fe14B hard phase.
UR - http://www.scopus.com/inward/record.url?scp=67649234195&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:67649234195
SN - 0272-9172
VL - 1032
SP - 92
EP - 98
JO - Materials Research Society Symposium Proceedings
JF - Materials Research Society Symposium Proceedings
T2 - Nanoscale Magnetic Materials and Applications
Y2 - 26 November 2007 through 30 November 2007
ER -