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THE JAPAN INSTITUTE OF METALS PROCEEDINGS VOLUME 14 (REMXVI2000)
Magnetic Anisotropy and
Coercivity in Rare-Earth
Transition Metal Alloys
Edited by
H. Kaneko
M. Homma
M. Okada
| Copyright © 2000, | The Japan Institute of Metals All right reserved |
| Published by | The Japan Institute of Metals Aramaki Aoba, Aoba-ku, Sendai 980-0845, Japan Tel: +81-22-223-3685, Fax: +81-22-223-6312 |
Contents
Preface H. Kaneko, M. Homma and M. Okada
Session 1: RE-TM Materials I
Rare-Earth (R), Transition Metal (T) Intermetallics Obtained by the Dumb-Bell Substitution Method
J. M. Cadogan ······· S3
Synthesis Structural and Magnetic Properties of a Novel Series of Intermetallic Compounds Nd3(Fe1−xCox)27.5Ti1.5 (x=0, 0.1, 0.2, 0.3, 0.4)D. K. Gioureli, O. Kalogirou, A. C. Stergiou, G. Makaronides,G. Litsardakis, S. Katemliades and M. Gjoka ······· S15
Coercivity Mechanisms of Nanocomposite Sm2Co17/Co AlloysS. K. Chen, J. L. Tsai and T. S. Chin ······· S25
Magnetic Moment and Anisotropy in R2Fe17 and RFe11Ti Single Crystals under PressureZ. Arnold, J. Kamarád, O. Mikulina, B. Garcia-Landaand M. R. Ibarra ······· S35
The Role of Intergranular Regions in Sintered Nd-Fe-B Magnets with (BH)max>420 kJ/m3 (52.5 MGOe)J. Fidler, T. Schrefl, S. Sasaki and D. Süss ······· S45
Session 2: Micromagnetics
Micromagnetic Modelling of Nanocomposite Magnets
T. Schrefl, J. Fidler and D. Süss ······· S57
On the Effect of the Dipolar Interactions on the Hysteretic Properties of Hard-Soft Nanocomposite Samples: the Role of the Maximum Applied Field and the TemperatureJ. M. González, M. I. Montero, P. Crespo, P. Marín,M. Alocén, V. Raposo and A. Hernando ······· S73
Review of Coercivity Mechanisms and the Microstructure of Nanocrystalline Permanent MagnetsH. Kronmüller ······· S83
Session 3: Anisotropy and Magnetic Aftereffect
Coercivity Mechanism in the Multi-Domain Sm2Fe17N3 Particles Reacted with Zn Metal at Various Temperatures
K. Kobayashi, H. Sugiyama, M. Ohmura and K. Hayakawa ······· S95
Analysis of the Hysteresis Loop of Permanent Magnets by the Energetic ModelM.-H. Yu, R. Grössinger, M. Küpferling, Z.-D. Zhang,H. Hauser, R. Sato and B. Enzberg-Mahlke ······· S105
On the Origin of Anomalous Magnetic Aftereffects and Thermal RemagnetizationK.-H. Müller, M. Wolf, D. Echert and U. K. Rößler ······· S115Session 4: RE-TM Materials II
X-ray diffraction and Calorimetric Study of Crystallization Behavior of Melt-Spun Amorphous Alloys of Fe3B/Nd2Fe14B-type Nanocomposite Permanent Magnets
S. Hirosawa, Y. Shigemoto, K. Murakami and H. Kanekiyo ······· S127
A Micromagnetic Analysis of the Experimental Methods Used to Evaluate the Activation VolumeR. Smirnov-Rueda, J. M. González, O. A. Chubykalo and J. González ······· S137
Micromagnetic Calculation of Magnetic Properties of Anisotropic Exchange-Spring MagnetsH. Fukunaga and H. Nakamura ······· S147
Permanent Magnetic Properties in Some Sm2Fe17N3 Particles Prepared by Changing Mechanically Grinding ConditionsI. Sasaki, H. Fujii and H. Okada ······· S155
Phase Condition and Structure, Formed at an Annealing of Quenched Fe-Nd AlloysB. V. Jalnin, E. V. Obrucheva, D. V. Obruchev, M. F. de Campos,A. Teresiak, R. Hermann, F. Schurack and L. Schultz ······· S165
Newly Developed Rare-Earth Manganese Nitride with High Magnetic Anisotropy FieldT. Hidaka, H. Nishio and A. Fukuno ······· S173
Site Preference and Interstitial Modification of (Nd, Sm)5(Fe, Ti)17R. K. Murakami, P. S. M. da Silva, V. Villas-Boas, F. P. Missell,J. Mestnik Filho, Z. Chu and W. B. Yelon ······· S183
Development of Manufacturing Process for High Residual Magnetic Flux Density of Magnet Powders Pellets Used by Anisotropic Plastic-Bonded MagnetY. Matsuyama, D.-Y. Ju and H.-Y. Zhao ······· S191
Coercivity Mechanisms in 2:17 Type of Permanent MagnetsS. Liu and E. Kuhl S201
Determination of the Temperature and Angular Dependence of the Switching Field of Isotropic Nd2Fe14B, Sm2Co17 and Barium Ferrite Magnets by Remanence Angle MeasurementsP. N. Thurner, H. R. Kirchmayr, K. Elk and L. Jahn ······· S211
A Study of Magneto-Volume Effects in Sm2Fe17Nx (0<x<3) Systems of Intermediate Nitrogen ConcentrationK. Kobayashi, M. Ohmura, Y. Okada and Y. Yoshida ······· S219
Author Index······· S229
Subject Index······· S230